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Thytronic Pro-N NVA100X-D Manual

The comprehensive solution for differential protection of generators/motors/transformers

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NVA100X-D

THE COMPREHENSIVE SOLUTION FOR DIFFERENTIAL PROTECTION

OF GENERATORS/MOTORS/TRANSFORMERS

MANUAL

NVA100X-D - Manual - 02 - 2016

Table of Contents

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Page 1 NVA100X-D THE COMPREHENSIVE SOLUTION FOR DIFFERENTIAL PROTECTION OF GENERATORS/MOTORS/TRANSFORMERS MANUAL NVA100X-D - Manual - 02 - 2016...
Page 2: Table Of Contents
T A B L E O F C O N T E N T S — 1 INTRODUCTION Scope and liability ......................................6 Applicability ........................................6 Conformity ........................................6 Service support .......................................6 Copyright ...........................................6 Warranty ...........................................6 Safety recommendations ....................................6 Insulation tests ........................................6 Product identification .....................................7 Environment ........................................7 Graphical conventions ....................................7 Glossary/definitions ......................................7...
Page 3 Phase overcurrent - 50/51 side H ................................23 Phase overcurrent - 50/51 side L ................................24 Locked rotor - 51LR(48)/14 ...................................25 Voltage-controlled / restraint overcurrent - 51V ............................26 Residual overcurrent - 50N.1/51N .1 or High impedance restricted earth fault - 87NHIZ.1 - side 1 ..........26 Residual overcurrent - 50N.2/51N .2 or High impedance restricted earth fault - 87NHIZ.2 - side 2 ..........
Page 4 Loss of field - 40 ......................................99 Negative sequence overcurrent for Generator protection - 46G......................105 Negative sequence overcurrent for motor protection - 46M ......................110 Phase rotation direction check - 47 .................................117 Thermal image - 49MG for motor or generator protection ........................118 Phase overcurrent - 50/51 side H and side L ............................
Page 5 7.3 MENU TREE........................................306 7.4 MAINTENANCE .......................................321 7.5 REPAIR ..........................................321 7.6 PACKAGING ........................................321 — 8 APPENDIX 8.1 APPENDIX A1 - Inverse time curves ................................322 8.2 APPENDIX A1 - Inverse time IEC curves ..............................323 Mathematical formula ....................................323 46M - First element - Standard inverse time curve (type A) ........................324 46M - First element - Very inverse time curve (IEC 60255-3/BS142 type B) ..................325 46M - First element - Extremely inverse time curve (IEC 60255-3/BS142 type C) ................326 Phase overcurrent 50/51 side H and side L - Standard inverse time curve (IEC 60255-3/BS142 type A) ........327...
Page 6: Introduction
WARNING are not taken. are not taken. Installation and commissioning must be carried out by qualiﬁ ed person; Thytronic assumes no re- sponsibility for damages caused from improper use that does not comply all warning and caution in this manual.
Page 7: Product Identification
— Product identification Each device is equipped with: • Identiﬁ cation label installed on the front side with following informations: code number, phase and residual nominal currents, auxiliary voltage range and CE mark 100V 100V 100V 100V 110-230 Vac/dc 110-230 Vac/dc NVA100X#0D2J0TE0 NVA100X#0D2J0TE0 •...
Page 8 Overvoltage Residual overvoltage 59V2 Negative sequence overvoltage 64REF Low impedance restricted earth fault Maximum number of startings (Restart inhibition) Ground directional overcurrent 67N(Comp) Ground directional overcurrent with calculated residual current 81O/81U Overfrequency and underfrequency 87G-87M/87T Double slope biased differential for generator/motor/transformer Circuit breaker failure 74CT-74VT CT-VT supervision...
Page 9 Symbols Threshold setting (e.g. pickup I>>). I>> The value is available for reading and is adjustable by means ThySetter + MMI. Limit block (I>> threshold). I ≥ I>> Computation block (Max phase current) Ma x [I Curve type (deﬁnite/inverse time) Logic internal signal (output);...
Page 10 INPUT OFF delay timer (dropout) with reset ( delay) OUTPUT RESET RESET INPUT Minimum pulse width operation for output relays ( OUTPUT INPUT Latched operating mode for output relays and LEDs Latched OUTPUT INPUT Pulse operating mode for output relays OUTPUT Symbols1 .ai NVA100X-D - Manual - 02 - 2016...
Page 11: General
G E N E R A L — Preface The relay can be typically used in radial or meshed MV and LV networks as differential protection of power generator/motor or transformer. The phase and amplitude adaptation of the current for differential protection can be achieved can be done either either by internal compensation or through external adapters.
Page 12: Main Features
— Main features • Metallic case. • Backlight LCD graphic Display. • Sixteen LEDs that may be joined with matrix criteria to many and various functions. • RESET key to clear LED indications and latched output relays. • Sixteen or thirty-two free settable binary inputs. •...
Page 13: Technical Data
T E C H N I C A L D A T A GENERAL — Measuring relays and protection equipment Reference standards IEC 60255-1 Part 1: Common requirements — Mechanical data Mounting: • Flush. • Rack. External dimensions (Flush mounting) 177 x 252 x 245 (high x width x depth) Terminals screw connections...
Page 14: Emission
Reference standards EN 60255-22-4 IEC 60255-22-4 EN 61000-4-4 IEC 61000-4-4 Fast transient burst (5/50 ns) • Auxiliary power supply 2 kV • Input circuits 4 kV Reference standards EN 60255-22-5 IEC 60255-22-5 EN 61000-4-5 IEC 61000-4-5 High energy pulse (line-to-ground 10 ohm, 9 μF) •...
Page 15: Input Circuits
INPUT CIRCUITS — Auxiliary power supply Uaux Voltage Nominal value (range) 24...48 V~/- 115...230 V~/110...220 V- Operative range (each one of the above nominal values) 19...60 V~/- 85...265 V~/75...300 V- Inrush current (max) • 24 V- 6 A, 5 ms •...
Page 16: Output Circuits
OUTPUT CIRCUITS — Relays Quantity 8 or 16 Type • KC1-1, KC1-2, KC1-7, KC1-8, KC2-1, KC2-2, KC2-7, KC2-8 changeover (SPDT, type C) • KC1-3, KC1-4, KC1-5, KC1-6, KC2-3, KC2-4, KC2-5, KC2-6 make (SPST-NO, type A) Rated current Short duration current (0,5 s) 30 A Rated voltage/max switching voltage 250 V~/400 V~...
Page 17: Rated Values And General Settings
RATED VALUES AND GENERAL SETTINGS — Rated values Relay nominal frequency (f 50, 60 Hz Relay phase rated current - side H and L (I and I 1 A or 5 A Phase CT primary rated current side H and L (I and I 1 A...20 kA 1...499 A (step 1 A)
Page 18: Output Relays
— Output relays Minimum pulse width 0.000...0.500 s (step 0.005 s) Logic De-energized/Energized Operating mode Latched/No latched — Input sequence Side H phase current sequence (I-SequenceH) IL1-IL2-IL3, IL1-IL3-IL2..Side L phase current sequence (I-SequenceL) IL1-IL2-IL3, IL1-IL3-IL2..Phase voltage sequence (U-Sequence) UL1-UL2-UL3, UL1-UL3-UL2,..
Page 19: Thermometric Probes - 26
— Thermometric probes - 26 Alarm ThAL1...8: Alarm threshold (Th 0...200 °C AL1...8 Operate time (tTh 0..100 s AL1...8 Trip Th>1...8: Trip threshold (Th> 0...200 °C 1...8 Operate time (tTh> 0..100 s 1...8 — Undervoltage - 27 Common conﬁ guration: Voltage measurement type (Utype27) ph-ph ph-n...
Page 20: Undercurrent - 37
Deﬁ nite time Second threshold deﬁ nite time ( P 2> 0.01...1.50 P Operating time (t >> 0.07...100.0 s 0.07...9.99 s (step 0.01 s) 10.0...100.0 s (step 0.1 s) Pickup time ≤ 0.04 s Dropout ratio 0.95...0.98 Dropout time ≤ 0.05 s Overshoot time 0.04 s Pickup accuracy...
Page 21: Negative Sequence Overcurrent For Generator Protection - 46G
XC2-XD2 Element Absolute center coordinate (X 0.00...4.50 Z (step 0.01 Z Diameter (X 0.20...5.00 Z (step 0.01 Z Operating time (t 0.07...100.0 s XC2XD2 0.07...9.99 s (step 0.01 s) 10.0...100.0 s (step 0.1 s) Reset time delay (t 0.0...10.0 s XC2XD2-RES Pickup time ≤...
Page 22: Phase Rotation Direction Check - 47
Inverse time First threshold inverse time (I > 0.03...1.00 I (step 0.01 I First threshold within CLP (I 0.03...5.00 I (step 0.01 I 2CLP>inv Operating time (t > 0.02...60.0 s 0.02...9.99 s (step 0.01 s) 10.0...60.0 s (step 0.1 s) >>...
Page 23: Phase Overcurrent - 50/51 Side H
— Phase overcurrent - 50/51 side H > Element > Curve type (I > DEFINITE, Curve IEC/BS A, B, C, LIT, ANSI/IEEE MI, VI, EI RECTIFIER, I t or EM CLP operating mode (I Mode) OFF/ON-Element blocking/ON-Change setting (H)CLP> CLP activation time (t 0.00...100.0 s (H)CLP>...
Page 24: Phase Overcurrent - 50/51 Side L
Second threshold within CLP (I 0.100...20.00 I (H)CLP>>inv 0.100...0.999 I (step 0.001 I 1.00...20.00 I (step 0.01 I Operating time (t >> 0.02...10.00 s (step 0.01 s) >>> Element CLP operating mode (I >>> Mode) OFF/ON-Element blocking/ON-Change setting (H)CLP CLP activation time (t 0.00...100.0 s (H)CLP>>>...
Page 25: Locked Rotor - 51Lr(48)/14
First threshold within CLP (I 0.100...20.00 I (L)CLP>inv 0.100...0.999 I (step 0.001 I 1.00...20.00 I (step 0.01 I Operating time (t > 0.02...60.0 s 0.02...9.99 s (step 0.01 s) 10.0...60.0 s (step 0.1 s) >> Element Curve type (I>> DEFINITE or I Curve CLP operating mode (I >>...
Page 26: Voltage-Controlled / Restraint Overcurrent - 51V
>> Element CLP operating mode (Mode 51LR>>) With/without speed control CLP activation time (t 0.00...200 s LRCLP>> 0.00...9.99 s (step 0.01 s) 10.0...99.9 s (step 0.1 s) 100...200 s (step 1 s) Deﬁ nite time 51LR(48)/14 Second threshold deﬁ nite time (I >>...
Page 27 > Operating time (t > 0.04...200 s 0.04...9.99 s (step 0.01 s) 10.0...99.9 s (step 0.1 s) 100...200 s (step 1 s) Inverse time 50N.1/51N.1 First threshold inverse time (I > 0.002...2.00 I 0.002...0.999 I (step 0.001 I 1.00...2.00 I (step 0.01 I >...
Page 28: Residual Overcurrent - 50N.2/51N .2 Or High Impedance Restricted Earth Fault - 87Nhiz.2 - Side 2
— Residual overcurrent - 50N.2/51N .2 or High impedance restricted earth fault - 87NHIZ.2 - side 2 IE2> Element > Curve type (I > DEFINITE, IEC/BS A, B, C, Curve ANSI/IEEE MI, VI, EI, LIT, EM CLP operating mode (I >...
Page 29: Calculated Residual Overcurrent - 50N(Comp)/51N(Comp)
>>> within CLP (I 0.002...10.00 I E2CLP>>>def 0.002...0.999 I (step 0.001 I 1.00...10.00 I (step 0.01 I >>> Operating time (t >>> 0.03...10.00 s (step 0.01 s) Pickup time ≤ 0.04 s Dropout ratio 0.95...0.98 Dropout time ≤ 0.05 s Overshoot time 0.04 s Pickup accuracy...
Page 30: Minimum Power Factor - 55
>> within CLP (I 0.100...40.0 I ECCLP>>def 0.100...0.999 I (step 0.001 I 1.00...9.99 I (step 0.01 I 10.00...40.00 I (step 0.1 I >> Operating time (t >> 0.03...10.00 s (step 0.01 s) IEC>>> Element CLP mode (I >>> Mode) OFF/ON-Element blocking/ON-Change setting ECCLP CLP activation time (t 0.00...100.0 s...
Page 31: Residual Overvoltage - 59N
Inverse time 59 First threshold inverse time ( U > 0.50...1.50 U (step 0.01 U U> Operating time (t > 0.10...100.0 s 0.10...9.99 s (step 0.01 s) 10.0...100.0 s (step 0.1 s) U>> Element Deﬁ nite time 59 Second threshold deﬁ nite time ( U >> 0.50...1.50 U (step 0.01 U U>>...
Page 32: High Impedance Restricted Earth Fault - 64Ref
Overshoot time 0.04 s Pickup accuracy ± 5% con 0.01 U ± 0.3% con 0.15 U Operate time accuracy 5% ± 10 ms — High impedance restricted earth fault - 64REF Minimum threshold 64REF (I >) 0.05...2.00 I (step 0.01 I Intentional delay 64REF (t >) 0.03...60.00 s (step 0.01 s)
Page 33 > Operating time (t > 0.02...60.0 s 0.02...9.99 s (step 0.01 s) 10.0...60.0 s (step 0.1 s) >> Element >> Curve type (I >>Curve) DEFINITE IEC/BS A, B, C ANSI/IEEE MI, VI, EI, EM CLP operating mode (I >> Mode) OFF/ON-Element blocking/ON-Change setting EDCLP CLP activation time (t...
Page 34: Directional Earth Fault Overcurrent With Calculated Residual Current- 67N(Comp)
>>>> Element CLP operating mode (I >>>> Mode) OFF/ON-Element blocking/ON-Change setting EDCLP CLP activation time (t 0.00...100.0 s EDCLP>>>> 0.00...9.99 s (step 0.01 s) 10.0...100.0 s (step 0.1 s) >>>> Reset time delay (t >>>> 0.00...100.0 s 0.00...9.99 s (step 0.01 s) 10.0...100.0 s (step 0.1 s) Deﬁ...
Page 35 Inverse time 67N(Comp) First threshold inverse time (I EDC>inv ED>inv Residual current pickup value 0.100...20.00 I 0.100...0.999 I (step 0.001 I 1.00...20.00 I (step 0.01 I Residual voltage pickup value 0.004...0.500 U (step 0.001 U Characteristic angle 0...359° (step 1°) Half operating sector 1...180°...
Page 36: Overfrequency - 81O
> within CLP (I >> 0.100...20.00 I EDCLP 0.100...0.999 I (step 0.001 I 1.00...20.00 I (step 0.01 I >> Operating time (t >> 0.02...60.0 s 0.02...9.99 s (step 0.01 s) 10.0...60.0 s (step 0.1 s) >>> Element CLP operating mode (I >>>...
Page 37: Underfrequency - 81U
— Underfrequency - 81U f< Element Deﬁ nite time 81U First threshold deﬁ nite time (f< 0.800...1.000 f (step 0.001 f f< Operating time (t < 0.05...100.0 s 0.05...9.99 s (step 0.01 s) 10.0...100.0 s (step 0.1 s) f<< Element Deﬁ...
Page 38: Control And Monitoring
CONTROL AND MONITORING — Second harmonic restraint - 2ndh-REST Second harmonic restraint threshold (I >) 10...50 % (step 1 %) 2ndh > reset time delay (t 0...100.0 s 2ndh 2ndh>RES) 0.00...9.99 s (step 0.01 s) 10.0...100.0 s (step 0.1 s) Pickup time ≤...
Page 39: Ct Supervision - 74Ct Side L
TR Id>>_L3, ST 2nd-REST, ST 5th-REST, ST H-REST-L1, ST H-REST-L2, ST H-REST-L3, ST SatDet Note 1 For the DFR function a licence is required; call Thytronic for purchasing. Note 2 Output relay and binary input states are available only when the concerning I/O circuits are implemented...
Page 40: Metering
METERING — Accuracy (type test) MEASURE Reference values Reference values Accuracy Accuracy Phase current 0.1 I 0.2% 0.03% Measured residual current 0.01 I 0.3% 0.02% Calculated residual current 0.1...1 I 0.3% Phase voltage 0.1 U 0.2% 0.03% Measured residual voltage 0.01 U 0.02% 0.1 U...
Page 41 Measure Symbol Displacement angle of I respect to U Displacement angle of U respect to I Displacement angle of U respect to I Displacement angle of U respect to I E-IEC Displacement angle of U respect to I EC-IEC Positive sequence current side L Negative sequence current side L Negative sequence/positive sequence current ratio Positive sequence voltage...
Page 42: Function Characteristics
F U N C T I O N C H A R A C T E R I S T I C S HARDWARE Device layout ETHERNET ETHERNET 1A/5A 1A/5A INPUT MODULE INPUT MODULE ≈ ≈ EEprom EEprom Flash Flash SRam SRam ≈...
Page 43: Input Board
Analog processing The following are envisaged: • Anti aliasing ﬁ lter circuits, • Ampliﬁ er circuits for conditioning the input signals, • Reference voltage adjustment circuits for the measurement A/D converter. The Pro-n relays use a DSP processor operating at 40 MHz; it performs all the processing on the analogue signals and furthermore coordinates management of the TX-RX signals to the CPU.
Page 44: Firmware
FIRMWARE The ﬁ rmware which handles operation of the Pro-N relays is made up of three fundamental elements shown in the following block diagram. Ethernet Ethernet RS485 RS485 RS232 RS232 TIMER TIMER I/O boards I/O boards RTOS timer RTOS timer KEYS KEYS PC com...
Page 45: Drivers
DSP Firmware By means of Discrete Fourier Transform calculation, based on 24 samples/period, information is de- duced in relation to the amplitude and phase of all the current measurements; these are constantly updated and at the disposal of all the protection and control application algorithms. —...
Page 46: I/0
— Metering inputs The following inputs are provided: • Six phase current inputs • Two residual current input • The rated currents are independently adjustable at 1 A or 5 A through sw setting • Three phase voltage inputs with programmable nominal voltages within range 50...130 V (U =100 V) or 200...520 V (U =400 V) to be select on order.
Page 47 Direct Samples are processed by means DFT (Discrete Fourier Transform) algorithm and the phase and amplitude of fundamental are computed: • Phase currents - side H and side L I ACQUISITION ACQUISITION ≈ ≈ IL 1 . a i IL 1 . a i •...
Page 48 By means vector addition of direct measures the following are calculated (RMS value of fundamen- tal components): • Phase-to-phase voltages: U 12 = 12 = L1 - L1 - 23 = 23 = L2 - L2 - 31 = 31 = L3 - L3 - U1 2 .
Page 49 Sequence • Fundamental RMS positive sequence current - side L: I • Fundamental RMS negative sequence current - side L: I I1 -I 2 . a i I1 -I 2 . a i +j120° +j120° -j120° -j120° = (I = (I ) / 3 ) / 3 -j120°...
Page 50 • Minimum (I , ±P , ±Q L1MIN L2MIN L3MIN Inside an adjustable time interval t , the minimum magnitude is calculated for phase currents , active power ±P and reactive power ±Q of measures taken every second. The average values are stored at the end of the same time interval t (Rolling demand common parameter).
Page 51 Energy • Positive and negative active energy (one second refresh): +E , -E • Total active energy (one second refresh): E • Positive and negative reactive energy (one second refresh): +E , -E • Total reactive energy (one second refresh): E +, E +, E + = ∫(+Pdt)
Page 52: Conventions
— Conventions Cyclic phase sequence order For three phase rotating currents, a direct cyclic sequence is deﬁ ned when the three phases are L1, L2, L3 ordered, while an inverse cyclic sequence is deﬁ ned when the three phases are L1, L3, L2 ordered.
Page 53: Polarity Reversing
— Polarity reversing For each inputs of each phase current and residual current input, the polarity “NORMAL” or “RE- VERSE” can be select. With “NORMAL” selection the input polarity from this input is not inverted, with “REVERSE” selec- tion the input polarity is reversed. This function allows you to correct any connection errors due to reverse polarity.
Page 54 Convention for measuring active power, reactive power and power factor. • Resistive-inductive load. NVA100X-D NVA100X-D A1-A3-A5 A1-A3-A5 CURRENT INPUTS CURRENT INPUTS B3-B5-B7 B3-B5-B7 VOLTAGE INPUTS VOLTAGE INPUTS SYSTEM SYSTEM II° II° I° I° +Q, +Q +Q, +Q , +Q , +Q , +Q , +Q -cos ϕ, -cos ϕ...
Page 55 • Resistive-inductive load. NVA100X-D NVA100X-D SYSTEM SYSTEM A1-A3-A5 A1-A3-A5 CURRENT INPUTS CURRENT INPUTS B3-B5-B7 B3-B5-B7 VOLTAGE INPUTS VOLTAGE INPUTS +Q, +Q +Q, +Q , +Q , +Q , +Q , +Q II° II° I° I° -cos ϕ, -cos ϕ -cos ϕ, -cos ϕ , -cos ϕ...
Page 56: Use Of Measured Signals
— Use of measured signals PROTECTIVE ELEMENTS g g g g Underimpedance (21) g g g g Undervoltage (27) g g g g Positive sequence undervoltage (27V1) g g g g Directional active overpower (32P) g g g g Undercurrent (37) g g g g Directional active underpower (37P) g g g g...
Page 57: Binary Inputs
— Binary inputs Sixteen or thirty-two binary inputs are available (one or two input boards). The dry inputs must be powered with an external voltage, (usually the auxiliary power supply). The connections are shown in the schematic diagrams. The following settings can be used to conﬁ gure each input inside the Set \ Board 1(2) inputs \ Binary input IN1-1...(IN1-x): •...
Page 58 Binary inputs ELEMENTS IN1-1 IN1-x IN1-16 IN2-1 IN2-x IN2-16 IE1>>>Bk (Logic block of IE1>>> element, active through virtual I/O) IE2>Bk (Logic block of IE2> element, active through virtual I/O) IE2>>Bk (Logic block of IE2>> element, active through virtual I/O) IE2>>>Bk (Logic block of IE2>>> element, active through virtual I/O) IEC>Bk (Logic block of IEC>...
Page 59 Fault trigger When the programmed input is activated, a trigger is issued for fault record SFR). Data storing takes place with the same procedure resulting from a trip of any protective elements. Fault recording Fault recording ->I ->I ->I ->I Logic Logic INx t O N...
Page 60 set to ON in the concerning menu). The application of the IN1 binary input for the acquisition of the Block1 (logic block) coming from external signal is shown in the following ﬁ gure; in the example the block signal is ORed with Block2 (selective block) to block the generic (xxx) element.
Page 61 Logic Logic INx t O F F INx t O F F INx t O N INx t O N n.c. n.c. INx t INx t INx t INx t n.o. n.o. CB position CB position Binary input INx Binary input INx CB diagnostic CB diagnostic Breaker failure (BF)
Page 62 MCB VT OPEN MCB VT2 OPEN The external acquisition of MCB auxiliary contact allows to detect a failure on the secondary circuit of the voltage transformer (VTs); the information is available for the VT monitoring function (74VT). LINE LINE MCB VT OPEN MCB VT OPEN Logic Logic...
Page 63 Speed control The input allows to acquire the rotor state (running or not running). Speed control Speed control Logic Logic INx t O N INx t O N INx t O F F INx t O F F Speed control Speed control n.c.
Page 64: Output Relays
— Output relays Eight or sixteen (one or two output boards) output relays are available (KC1-1...KC1-8, KC2-1... KC2-8): • KC1-1, KC1-2, KC1-7, KC1-8, KC2-1, KC2-2, KC2-7, KC2-8 with two changeover contacts (SPDT, type C) • KC1-3, KC1-4, KC1-5, KC1-6, KC2-3, KC2-4, KC2-5, KC2-6 with one make contact (SPST-NO, type A). Each output relay may be programmed with following operating mode: •...
Page 65 RELAYS ELEMENTS KC1-1 KC1-2 KC1-... KC2-1 KC2-2 KC2-... Self test 21 First element start relays (Z<-ST-K) 21 First element trip relays (Z<-TR-K) 21 Second element start relays (Z<<ST-K) 21 Second element trip relays (Z<<TR-K) 27 First element start relays (U< ST-K) 27 First element trip relays (U<...
Page 66 RELE’ ELEMENTS KC1-1 KC1-2 KC1-... KC2-1 KC2-2 KC2-... 55 First element start relays (CPhi1>ST-K) 55 First element trip relays (CPhi1>TR-K) 55 Second element start relays (CPhi2> ST-K) 55 Second element trip relays (CPhi2>TR-K) 59 First element start relays (U>ST-K) 59 First element trip relays (U> TR-K) 59 Second element start relays (U>>ST-K) 59 Second element trip relays (U>>TR-K) 59N First element start relays (UE>ST-K)
Page 67: Led Indicators
— LED indicators Sixteen LEDs are available. • One green LED “ON”: if turned on it means that the device is properly working, if ﬂ ashing the inter- nal self-test function has detected an anomaly. • One yellow LED “START” tagged for START of one or more protective elements. •...
Page 68 LEDs ELEMENTS START TRIP 1 5 L1-1 L1-.. L1-8 21 First element start LEDs (Z<ST-L) 21 First element trip LEDs (Z<TR-L) 21 Second element start LEDs (Z<<ST-L) 21 Second element trip LEDs (Z<<TR-L) 27 First element start LEDs (U<ST-L) 27 First element trip LEDs (U<TR-L) 27 Second element start LEDs (U<<ST-L) 27 Second element trip LEDs (U<<TR-L) 27V1 First element start LEDs (U1<ST-L)
Page 69 LEDs ELEMENTS START TRIP 1 5 L1-1 L1-... L1-8 59 First element Start LEDs (U>ST-L) 59 First element Trip LEDs (U> TR-L) 59 Second element Start LEDs (U>>ST-L) 59 Second element Trip LEDs (U>>TR-L) 59N First element Start LEDs (UE>ST-L) 59N First element Trip LEDs (UE>TR-L) 59N Second element Start LEDs (UE>>ST-L) 59N Second element Trip LEDs (UE>>TR-L)
Page 70: Communication Interfaces
— Communication interfaces Several communication ports are provided: • Two Ethernet/RS232 port on the front side for local communication (ThySetter). • One RS485 port on the rear side for bus communication. • Two Ethernet ports on the rear side for bus communication. Local port The local port has high priority compared with the remote Ethernet and RS485 ports.
Page 71: Protective Elements
PROTECTIVE ELEMENTS — Rated values Inside the Base menu the following parameters can be set: • Relay reference name • The the reference for the settings of relay rated currents (phase and residual) • Primary nominal values, employed for to return measures in the primary values •...
Page 72 Example 2 = 6 kV = 6 kV NVA100X-D NVA100X-D 6000 6000 = 60 = 60 Grid rated voltage U Grid rated voltage U = 6 kV = 6 kV 6000 6000 VTs ratio VTs ratio = 60 = 60 Es2-Un.ai Es2-Un.ai The relay rated voltage U...
Page 73 The relay residual rated voltage U must be indifferently estimated by means of the following gen- eral formula: = √3 · U = √3 · 6000 / (√3 · 60) = 100 V or by means the following streamlined formula: = 3 ·...
Page 74 • Phase CT primary current for sides H and L I This parameter affects the measure of the phase currents when the primary measurement reading mode is selected. It must be programmed to the same value of the phase CT primary rated cur- rent.
Page 75 • VTs Phase primary voltage U This parameter affects the measure of the phase voltages when the primary measurement reading mode is selected for phase-to-phase, calculated residual voltages, power and energy. If the formerly indications concerning the relay nominal voltage U are complied, then the U set- ting must be adjusted to U...
Page 76: Transformer Menu
Example 2 = 10 kV = 10 kV Es3-UEn.ai Es3-UEn.ai NVA100X-D NVA100X-D 11000 11000 = 110 / = 110 / = 91 V = 91 V Grid rated voltage U Grid rated voltage U = 10 kV = 10 kV 11000 11000 Ratio of voltage transformer connected from star neutral to ground:...
Page 77: Underimpedance - 21
— Underimpedance - 21 Preface Underimpedance protection is typically used to protect the generator against short-circuit between phases outwith the differential protection area 87G and as a backup to the latter. It is frequently used in place of voltage-dependent Overcurrent protection 51V when coordination with distance measuring protective devices is required on the HV step-up transformer side.
Page 78 Both thresholds have a operating characteristic circular in plan R, X with deﬁ nite time curve. TRIP TRIP << << < < Z<< Z<< Z< Z< General operation time characteristic curve for the underimpedance element - 21 General operation time characteristic curve for the underimpedance element - 21 t-int-F21.ai t-int-F21.ai The operating characteristic is a circle with its center located in the source impedance of the plan.
Page 79 For each threshold a reset time can be set (t ) used for coordination with electrome- Z<RES Z<<RES chanical relays, in order to protect sensitive to swings between the generator and the network or clearing time for intermittent faults. INPUT INPUT Z<RES Z<RES...
Page 80 Use of output relay: If the Z<BLK2OUT and/or Z<<BLK2OUT enable parameters are set to ON and a output re- • lay is designed for selective block (Block2), the protection issues a block output by phase ele- ments (BLK2OUT-Iph) or by any protection element (BLK2OUT-Iph/IE), whenever the given ele- ment (Start I(H)>, Start I(H)>>...
Page 81 Z< Z< Start ≤ Z < Z< Start ≥ 1%U & ≥ 5%I Iph block2 Start Z< Iph block2 output Iph/IE block2 output Z<RES ≤ Z < < Block2 IN diagnostic ≥ 1%U Z<RES ≥1 & < Z< Trip ≥ 5%I RE SET Z<...
Page 82 (ON≡Inhibit) Z<< Z< inhibition & Z< inhibition ≤ Z Z<< Start < ≥ 1%U & Z<< Start ≥ 5%I Iph block2 Start Z<< Iph block2 output Iph/IE block2 output Z<<RES ≤ Z < << Block2 IN diagnostic ≥ 1%U Z<<RES ≥1 &...
Page 83: Thermal Protection With Rtd Thermometric Probes - 26
— Thermal protection with RTD thermometric probes - 26 Preface The protection is optionally available in all versions. The measure of temperature is acquired by means of Pt100 (RTD Resistive Temperature sensing Devices) probed, connected to the MPT module. A direct thermal protection element with eight PT100 thermometric probes (RTD Resistive Thermal Device) provides protection against premature ageing or breakdown of the insulating materials through overheating.
Page 84 Pt10 0 -xAlarm ThALx ThALx-K ThALx ThALx-L T° > Th> > > Pt100 OK Th>x-K & T° +2 4 5 . 0 ° C ≤ Th>x-L T° > > Pt10 0 -x Trip Pt100 FAULT & TOWARDS DIAGNOSTIC > Diagnostic T°...
Page 85: Undervoltage - 27
— Undervoltage - 27 Preface Two operation thresholds, independently adjustable with adjustable delay. The ﬁ rst one may be programmed with deﬁ nite or inverse time, while the second threshold operates with deﬁ nite time characteristic. Each threshold may be separately enabled or disabled. The ﬁ...
Page 86 The ﬁ rst threshold trip (U<) may be inhibited by start of the second threshold (U<<) by setting ON the U< Disabling by U<< start (U<disbyU<<) parameter available inside the Set \ Proﬁ le A(or B) \ Undervoltage-27 \ U<< Element \ Setpoints menu. Logic27 Logic27 Utype27...
Page 87 Disable 27 function by operator ON≡Enable U< undervoltage element (ON≡Inhibit) U< Enable State U< & U< Utype27 ≤ Start U< ≥1 U< State U<ST-K & U<ST-L U< ≤ U< Curve U<def U<inv Logic27 ≥1 & U< U<TR-K U<TR-L & RESET Trip U<...
Page 88 t [s] 10000 0.75 <inv · [1 - (U/U< 1000 <inv = 100 s <inv = 10 s <inv = 1 s <inv = 0.1 s 0.01 U /U<inv 0.01 0.25 Note: match of operating and setting time takes place when U/U< = 0.25 Inverse time operating characteristic concerning the ﬁrst threshold (U<) of the undervoltage element - 27 F_27-Char.ai...
Page 89: Positive Sequence Undervoltage - 27V1
— Positive sequence undervoltage - 27V1 Preface The element has an adjustable threshold with time deﬁ nite delay. Enabling or disabling may be performed through ThySetter: it can be temporarily blocked by key- board command. Operation and settings The positive sequence voltage is calculated as: +j120°...
Page 90 Logical block (Block1) If the U1<BLK1 enabling parameters is set to ON and a binary input is designed for logical block (Block1), the protection is blocked whenever the given input is active. The trip timer is held in reset condition, so the operate time counting starts when the input block goes down.
Page 91: Directional Active Overpower - 32P
— Directional active overpower - 32P Preface The active power is calculated as: cosφ cosφ cosφ where: • are the fundamental components of the phase-to-neutral voltages • are the fundamental components of the phase currents • cosφ , cosφ , cosφ are the phase power factors φ...
Page 92 The element has two adjustable thresholds with time deﬁ nite delay. TRIP TRIP TRIP TRIP > > > > > > General operation time characteristic for the directional active power element - 32P General operation time characteristic for the directional active power element - 32P The active power is compared with the setting value (P >...
Page 93 > Start > Start P1>DIR P1>def P1>RES >def P1>RES > > Trip > ≥ RESET P1> Trip > Start & Enable (ON≡Enable) & > Trip Block1 > Block1 & Block1 Logic INx t INx t Block1 input (ON≡Block) n.c. INx t INx t Block1 n.o.
Page 94: Undercurrent - 37
— Undercurrent - 37 Preface One operation threshold, adjustable (I< ) with adjustable delay (t< The threshold operates with deﬁ nite time characteristic. Operation and settings Each of three side L currents are compared with the setting value (I< ). The start and trip logic may be selected OR or AND.
Page 95 Start I< State I< I<ST-K & I<ST-L I< ≤ Logic37 <def ≥1 <def I<TR-K & I<TR-L RESET Trip I< Start I< & Enable (ON≡Enable) & Trip I< BLK1I< I<BLK1 & Logic INx t INx t Block1 n.c. INx t Block1 input (ON≡Block) INx t Block1 n.o.
Page 96: Directional Active Underpower - 37P
— Directional active underpower - 37P Preface The active power is calculated as: cosφ cosφ cosφ where: • are the fundamental components of the phase-to-neutral voltages • are the fundamental components of the side L phase currents • cosφ , cosφ , cosφ...
Page 97 The element has two adjustable thresholds with time deﬁ nite delay. The active power is compared with the setting value (P < < ) powers above the associated pickup value are detected and a start is issued when the following conditions are met: •...
Page 98 P1< Start Disable 27 function by operator (ON≡Inhibit) P1<ST-K ON≡Enable P1< element State P1<ST-L P1<DIR P1<def P1<def P1<def & P1<TR-K < ≤ P1<TR-L RESET < ARM-P (ON enable control) C B - 37P ≥ ON≡CB closed < P1< Trip ARM-P CB CLOSED CT fault (74CT) 74CT Block...
Page 99: Loss Of Field - 40
— Loss of field - 40 Application Protection of synchronous generators and motors. Preface The loss of ﬁ eld for a synchronous motor or generator can have several causes: excitation faults, power faults, ﬁ eld breaker open, brush fault, short-circuits or interruption of ﬁ eld winding. Generator Various causes might result in a synchronous generator losing excitation: faults with the exciter or its supply system, unwanted opening of the ﬁ...
Page 100 Operation and settings The resistive R and reactive X components and the cosϕ power factor, concerning the Z impedance (phase voltage U phase current I ratio) are calculated: cosϕ sinϕ and ϕ where Z are the impedance module and displacement Z is the L1 phase-to neutral voltage, I is the L1 phase current phasor.
Page 101 Likewise, the start of the second threshold is issued when both the conditions concerning the alarm element are ﬁ lled and the R and X computed values are placed inside the circle with equation: ≤ (X where the absolute coordinate of the center is X and the diameter X are adjustable.
Page 102 (ON≡Enable) Undervoltage enable State < < ≤ & Start undervoltage < ≤ < ≤ Undervoltage F40.ai Logic diagram concerning the undervoltage consent for the loss of ﬁeld element - 40 In order to set the undervoltage consent, the minimum voltage threshold may be set (STATE ON) for the USUPU<...
Page 103 • For both trip thresholds (t ) a reset time delay may be adjusted in order to pro- XC1XD1RES XC2XD2RES tect against the out of step of low size generators connect to high short circuit impedance grids. INPUT INPUT XC1XD1RES XC1XD1RES XC1XD1RES XC1XD1RES...
Page 104 Mode = GENERATOR Mode Alpha40AL ≤ tanAlpha40AL · R & R ≤ 0 Mode = MOTOR ≤ -tanAlpha40AL · R & R > 0 (ON≡Inhibit) 4 0 A L disbyX C 1X D1 ≤ -tanAlpha40AL · R & R ≤ 0 &...
Page 105: Negative Sequence Overcurrent For Generator Protection - 46G
— Negative sequence overcurrent for Generator protection - 46G Preface The machine may operate with an unbalanced load due to single-phase or non-linear loads, the trip- ping of fuses, line interruption in one phase, asymmetric faults, tripping and unipolar reclosing on the transmission lines.
Page 106 The alarm threshold has a deﬁ nite time characteristic. If the inverse sequence current drops below the threshold, the element it is restored after a delay time t = K >>/I ; in this way, the device makes use of a memory which allows the integration cool of subsequent periods of excess and relapse of the trip threshold prior to reaching the trip time.
Page 107 I2AL> Start ON≡Enable I > element > Enable >ST-K >ST-L 2AL>def 2AL>def & 2AL>def >TR-K >≥ I > (ON≡Inhibit) I2>> Trip >>TR-L ≥1 RESET =0 if 20≤f≤70 Hz Block3 I2AL> Trip > Start & Enable (ON≡Enable) & > Trip Block1 I2AL>...
Page 108 t [s] 10000 = 0.05 I 2>> 1000 = 500 s 2MAX = 40.0 s heat = 10.0 s heat = 5.0 s heat = 1.0 s heat = 0.5 s heat = 0.1 s heat = 0.07 s 2MIN 0.01 0.01 0.02 0.03...
Page 109 t [s] 10000 = 0.50 I 2>> 1000 = 40.0 s heat = 100 s 2MIN = 10.0 s heat = 5.0 s heat = 1.0 s heat = 0.5 s heat = 0.1 s heat 0.01 0.01 0.02 0.03 0.05 Operating characteristic concerning the negative sequence element (46G) - with following settings>...
Page 110: Negative Sequence Overcurrent For Motor Protection - 46M
— Negative sequence overcurrent for motor protection - 46M Preface The motor may operate with an unbalanced load due to single-phase or non-linear loads, the trip- ping of fuses, line interruption in one phase, asymmetric faults, tripping and unipolar reclosing on the transmission lines.
Page 111 The ﬁ rst overcurrent element can be programmed with deﬁ nite or inverse time characteristic by setting the I2>Curve parameter (DEFINITE, IEC/BS A, IEC/BS B, IEC/BS C, ANSI/IEE MI, ANSI/IEE VI, ANSI/IEE EI, I2t, EM) available inside the Set \ Proﬁ le A(or B) \ Negative sequence overcurrent - 46 \ I2>...
Page 112 If the CLP function (Cold Load Pick-up) is enabled for element blocking, the selected threshold may be blocked for an adjustable time interval, starting from the starting control criterion (circuit breaker closure or I threshold). This operating mode may be select by setting ON-Element blocking the I2CLP> Mode and/or I2CLP>>...
Page 113 ON≡Enable I2> overcurrent element I2> Enable ON≡Inhibit (from I2>> element) I2> inhibition Start I2> > I2>ST-K ≥ I > I2>ST-L (Pickup outside CLP) ≥1 > 2 >inv > Curve 2 >RES 2 >def ≥ I > 2 >RES & > I2>TR-K I2>TR-L 2C L P >def...
Page 114 Start I > & Enable (ON≡Enable) & Trip I > BLK1I2> I2>BLK1 & Logic INx t INx t Block1 ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN I2> Block1 Block2 input enable (ON≡Enable) I2>BLK2IN &...
Page 115 ON≡Enable I2> overcurrent element I2> Enable ON≡Inhibit (from I2>> element) I2> inhibition Start I2> > I2>ST-K ≥ I > I2>ST-L (Pickup outside CLP) ≥1 > 2 >inv > Curve 2 >RES 2 >def ≥ I > 2 >RES & > I2>TR-K I2>TR-L 2C L P >def...
Page 116 Start I >> & Enable (ON≡Enable) & Trip I >> BLK1I2>> I2>>BLK1 & Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN I2>> Block1 Block2 input enable (ON≡Enable) I2>>BLK2IN &...
Page 117: Phase Rotation Direction Check - 47
— Phase rotation direction check - 47 Preface The starting of synchronous motors is inhibited when the 47 function becomes active. The element can be enabled or disabled. Operation and settings The positive sequence voltage is computed as: +j120° -j120° ·U ·U -j120°...
Page 118: Thermal Image - 49Mg For Motor Or Generator Protection
— Thermal image - 49MG for motor or generator protection Preface The phase currents (true RMS) are used into an algorithm reproducing a thermal replica according the IEC 60255-8 standard taking into account the Joule losses and the cooling effect due to the load reduction;...
Page 119 When the thermal image Dθ overcomes the threshold (e..g.Dθ> = 1.2 Dθ corresponding to a thermal equivalent current of 1.1I ), a trip is issued. TRIP p=0 (Hot curve) p=1 (Cold curve) √(D th> / D thetaB) General operation time characteristic for the thermal image elements - 49MG t-int-F49.ai Following data applies for the [1]: •...
Page 120 If the CLP Source parameter is set to CB and the circuit breaker is open, the protection is blocked off or or the equivalent thermal current is decreased by a K starting overload coefﬁ cient depend- ing on the DThCLP Mode setting. The CLP Source parameter is common for proﬁ les A and B All elements can be enabled or disabled by setting ON or OFF the DThetaAL1 Enable, DTheta- AL2 Enable and/or DTheta>...
Page 121 ON≡Enable element DthAL1 Enable Logic INx t INx t Init DTheta n.c. INx t INx t n.o. Binary input INx DthAL1 Change Change Element setting setting blocking DthIN DthAL1 A =“0” B or C A =“1” dDθ/dt + Dθ/T+ = (Ith/I DthAL1-K outside CLP) &...
Page 122 DthAL1 Enable (ON≡Enable) & DthAL1BLK1 BLK1DthAL1 & Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN DthAL1 Block1 Block2 input enable (ON≡Enable) DThAL1BLK2IN & ModeBLIN1 BLK2IN-Iph ON IPh BLIN1 Pilot wire input ON IPh/IE...
Page 123 ON≡Enable element DthAL2 Enable Logic INx t INx t Init DTheta n.c. INx t INx t n.o. Binary input INx DthAL2 Change Change Element setting setting blocking DthIN DthAL2 A =“0” B or C A =“1” dDθ/dt + Dθ/T+ = (Ith/I DthAL2-K outside CLP) &...
Page 124 DthAL2 Enable (ON≡Enable) & DthAL2BLK1 BLK1DthAL2 & Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN DthAL2 Block1 Block2 input enable (ON≡Enable) DThAL2BLK2IN & ModeBLIN1 BLK2IN-Iph ON IPh BLIN1 Pilot wire input ON IPh/IE...
Page 125 ON≡Enable element Dth> Enable Logic INx t INx t Init DTheta n.c. INx t INx t n.o. Binary input INx Dth> Change Change Element setting setting blocking Dth> DthIN A =“0” B or C A =“1” dDθ/dt + Dθ/T+ = (Ith/I Dth>-K outside CLP) &...
Page 126 Dth> Enable (ON≡Enable) & BLK1Dth> Dth>BLK1 & Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN Dth> Block1 Block2 input enable (ON≡Enable) DTh>BLK2IN & ModeBLIN1 BLK2IN-Iph ON IPh BLIN1 Pilot wire input ON IPh/IE...
Page 127 t [s] 10000 1000 0 .0 0 .6 0 .8 1 .0 0.01 7 8 9 10 Operating characteristic concerning the thermal image element (49MG) - T=1 min F_49-1min-Char.ai NVA100X-D - Manual - 02 - 2016 FUNCTION CHARACTERISTICS...
Page 128 t [s] 100000 10000 1000 0 .0 0 .6 0 .8 1 .0 7 8 9 10 Operating characteristic concerning the thermal image element (49MG) - T = 200 min F_49-200min-Char.ai NVA100X-D - Manual - 02 - 2016 FUNCTION CHARACTERISTICS...
Page 129: Phase Overcurrent - 50/51 Side H And Side L
— Phase overcurrent - 50/51 side H and side L Preface Three operation thresholds, independently adjustable with adjustable delay are provided on both the H and L side of the protected device. References used in this section are related to the protection of the H side: the elements on the L side is similar (replace the H with L).
Page 130 The second overcurrent element can be programmed with deﬁ nite or inverse time characteris- tic by setting the I> Time characteristic (I(H)>>Curve) parameter (DEFINITE, I2t) available inside the Set \ Proﬁ le A(or B) \ Phase overcurrent-50/51 side H \ I(H)> Element (I(H)>> Element, I(H)>>>...
Page 131 tH)> I(H)> Enable I(H)>Curve I(H)> I(H)CLP> t(H)> I(H)> I(H)CLP> t(H)> I(H)CLP>Mode t(H)CLP> I(H)> Element Start I(H)> Trip I(H)> I(H)>2ndh-REST CLPI(H)> ≥ I(H)> inhibition I(H)>BF & I(H)>BF Start I2ndh> & Trip I(H)> I(H)>BLK1 Start I(H)> BLK1I(H)> & & Block1 I(H)>BLK2IN Start I(H)> BLK2INI(H)>...
Page 132 Selective block (Block2) All along the protective elements the selective block may be set. The logic selectivity function may be performed by means any combination of the following I/O: • One committed pilot wire input (BLIN1). • One or more binary inputs designed for input selective block. •...
Page 133 ON≡Enable I(H)> overcurrent element I(H)> Enable ON≡Inhibit (from I(H)>> and/or I(H)>>> overcurrent element) I(H)> inhibition > State & Start I > ≥ I > (Pickup outside CLP) ≥1 > State I(H)>ST-K & L 1H I(H)>ST-L ≥ I > > > Curve >...
Page 134 Start I > & Enable (ON≡Enable) & Trip I > BLK1I > >BLK1 & & BLK4IN I > Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN I >...
Page 135 ON≡Enable I>> overcurrent element I(H)>> Enable ON≡Inhibit (from I>>> overcurrent element) I(H)>> inhibition (ON≡Inhibit) State >> > disbyl>> & > inhibition & Start I >> ≥ I >> (Pickup outside CLP) ≥1 Start I >> >> State >>ST-K & >>ST-L ≥...
Page 136 Start I >> & Enable (ON≡Enable) & Trip I >> BLK1I >> >>BLK1 & & BLK4IN I >> Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN I >>...
Page 137 (ON≡Inhibit) > disbyl >>> & > inhibition Start I >>> ON≡Enable 3rd overcurrent element >>> Enable (ON≡Inhibit) >> disbyl >>> & >> inhibition Start I >>> State >>> Start I >>> (Pickup outside CLP) & ST-I >>>&ST-U<< Start I >>> >>>ST-K ≥...
Page 138 Start I >>> & Enable (ON≡Enable) & Trip I >>> BLK1I >>> >>>BLK1 & & BLK4IN I >>> Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN I >>>...
Page 139: Locked Rotor- 50S/51Lr(48)/14
— Locked rotor- 50S/51LR(48)/14 Preface This function ensures protection against the destructive effects of thermal origin in the event of: • too slow starting or locked rotor during starting - 51LR (48), • rotor locking during normal operation (after starting) - 50S (stalling), with eventual speed control - 14, the latter to be employed for motors where the blocked rotor al- lowed maximum time is less than the starting time (eg.
Page 140 The second element may be blocked by means of the Cold Load Pickup (CLP) function. If the CLP function is enabled the element is blocked for an adjustable time interval, starting from the starting control criterion (circuit breaker closure or I threshold).
Page 141 ON≡Enable ILR> element ILR> Enable Start ILR> > ILR>ST-K ≥ I > > > > & ILR>TR-K ≥1 ILR>TR-L RESET ≥ I > Trip ILR> > ≥ I > STOP RUNNING Mode51LR Speed control “0” without speed control Mode51LR> Speed control Logic INx t INx t...
Page 142 Start ILR> & Enable (ON≡Enable) & Trip ILR> BLK1ILR> ILR>BLK1 & Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN ILR> Block1 Block2 input enable (ON≡Enable) ILR>BLK2IN & ModeBLIN1 BLK2IN-Iph ON IPh...
Page 143 ON≡Enable ILR>> overcurrent element Start ILR>> >> ILR>> Enable ILR>>ST-K ≥ I >> >> >> >> & ILR>>TR-K ≥1 “0” ILR>>TR-L RESET ≥ I >> Trip ILR> >> Mode51LR “0” “0” without speed control ≥ I >> “0” “1” with speed control STOP RUNNING Speed control...
Page 144 Start ILR>> & Enable (ON≡Enable) & Trip ILR>> BLK1ILR>> ILR>>BLK1 & Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN ILR>> Block1 Block2 input enable (ON≡Enable) ILR>>BLK2IN & ModeBLIN1 BLK2IN-Iph ON IPh...
Page 145: Voltage Controlled/Restraint Overcurrent - 51V
— Voltage controlled/restraint overcurrent - 51V Preface The short circuit current of the generator can be detected even if the fault current drops below the nominal current by means the voltage dependant overcurrent protection. (case of generators with excitation derived from terminals or, in the case of excitation by a separate supply, but with voltage regulator faults).
Page 146 generator is connected to its own step-up transformer. Current threshold Current threshold First threshold Second threshold > >> -I/U -I/U > >> -I/U -I/U < < Voltage < < Voltage -I/U-2 -I/U-1 -I/U-2 -I/U-1 Voltage controlled thresholds 51V-VR_char.ai All elements can be enabled or disabled by setting ON or OFF the State parameters inside the Set \ Proﬁ...
Page 147 For every of the four thresholds the following block criteria are available: Logical block (Block1) If the I-I/U>BLK1 e/o I-I/U>>BLK1 enabling parameters are set to ON and a binary input is de- signed for logical block (Block1), the concerning element is blocked off whenever the given input is active.
Page 148 F_51V-VC_S1.ai < -I/U “U <” “U <” ≤ > > -I/U -I/U -I/U>def -I/U > -I/U ≤U < -I/U I-I/U> Start threshold > & I-I/U>ST-K I-I/U>ST-L -I/U>RES ≤U < -I/U -I/U>def -I/U>RES threshold > & ≥1 -I/U>def I-I/U>TR-K I-I/U>TR-L RESE T I-I/U>...
Page 149 Enable (ON≡Enable) I-I/U>BLK1 & & BLK1I-I/U> Start I-I/U> & Trip I-I/U> Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN I-I/U> Block1 Block2 input enable (ON≡Enable) I-I/U>BLK2IN & ModeBLIN1 BLK2IN-Iph ON IPh...
Page 150 (ON≡Inhibit) I-I/U> disbyl-I/U>> & I-51V> inhibition Start I/51V>> < -I/U “U <” “U <” >> ≤ > -I/U -I/U -I/U -I/U>>def >> -I/U ≤ U < -I/U I-I/U>> Start threshold > & I-I/U>>ST-K I-I/U>>ST-L -I/U>>RES ≤ U < -I/U -I/U>>def I-51V>RES threshold >...
Page 151 Enable (ON≡Enable) I-I/U>>BLK1 & & BLK1I-I/U>> Start I-I/U>> & Trip I-I/U>> Block1 Logic INx t INx t ≥1 Block1, Block2 n.c. INx t INx t Block1 n.o. Binary input INx & BLK2IN I-I/U>> Block1 Block2 input enable (ON≡Enable) I-I/U>>BLK2IN & ModeBLIN1 BLK2IN-Iph ON IPh...
Page 152: Residual Overcurrent - 50N.1/51N.1, 50N.2/51N.2 Or High Impedance Restricted Earth Fault - 87Nhiz.1, 87Nhiz.2 Side 1,2
— Residual overcurrent - 50N.1/51N.1, 50N.2/51N.2 or high impedance restricted earth fault - 87NHIZ.1, 87NHIZ.2 side 1,2 Preface The relay can be typically used in radial or meshed MV and LV networks as feeder, power trans- former protection or motor-generators with neutral connected to ground through an impedance. Alternatively, by connecting the branch measurement current input to the same CT secondary circuit measuring the residual current on the generator line side and star point, it is possible to use the same protective device as a high impedance restricted earth fault to selectively clear all ground...
Page 153 > TRIP >> >>> > >> >>> t-int-F50N-51N.ai General operation time characteristic for the residual overcurrent elements - 50N.1/51N.1 For all inverse time characteristics, following data applies: • Asymptotic reference value (minimum pickup value): 1.1 I > • Minimum operate time: 0.1 s •...
Page 154 tE1> IE1> Enable IE1>Curve IE1> IE1CLP> tE1> IE1> IE1CLP> tE1> IE1CLP>Mode tE1CLP> IE1> Element Start IE1> Trip IE1> IE1>2ndh-REST CLPIE1> ≥ IE1> inhibition IE1>BF & IE1>BF Start I2ndh> & Trip IE1> Start IE1> IE1>BLK1 BLK1IE1> & & Block1 Start IE1> IE1>BLK2IN BLK2INIE>...
Page 155 Second harmonic restraint For all overcurrent elements, a block from the second harmonic restraint may be set by setting ON the IE1>2ndh-REST, IE1>>2ndh-REST, IE1>>>2ndh-REST parameters inside the Set \ Proﬁ le A(or B) \ Residual overcurrent-50N.1/51N.1 \ IE1> Element (IE1>> Element, IE1>>> Element) \ Set- points menus.
Page 156 Internal selective block (Block4) As well as to send or transmit a selective block toward other protective relays, each protective element may be enabled for receive or transmit a selective block from/to other internal protective elements. The internal selective block of one or more element concerning the residual overcurrent function may be enabled/disabled by means the IE1>BLK4, IE1>>BLK4 and/or IE1>>>BLK4 param- eters (virtual input and output common to all protective thresholds);...
Page 157 ON≡Enable IE1> residual overcurrent element IE1> Enable ON≡Inhibit IE1> inhibition (from IE1>> and/or IE1>>> residual overcurrent element) Start IE1> > State & >ST-K ≥ I > >ST-L (Pickup outside CLP) ≥1 > State E1>inv > Curve E1>RES & E1>def ≥ I >...
Page 158 Start I > & Enable (ON≡Enable) & Trip I > BLK1IE1> IE1>BLK1 & & BLK4IN IE1> Block1 Logic INx t INx t Block4 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IE1> Block1 Block2 input enable (ON≡Enable) IE1>BLK2IN...
Page 159 (ON≡Inhibit) ON≡Enable IE1>> residual overcurrent element IE1> disbylE>> IE1>> Enable & IE1> inhibition Start IE1>> ON≡Inhibit IE1>> inhibition (from IE1>>> residual overcurrent element) Start IE1>> Start IE1>> IE1>>ST-K IE1>>ST-L State E1>>def (Pickup outside CLP) & E 1 >>RES E 1 >>def ≥...
Page 160 Start I >> & Enable (ON≡Enable) & Trip I >> BLK1IE1>> IE1>>BLK1 & & BLK4IN IE1>> Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IE1>> Block1 Block2 input enable (ON≡Enable) IE1>>BLK2IN...
Page 161 (ON≡Inhibit) IE1>disbylE>>> & IE1> inhibition Start IE>>> ON≡Enable IE1>>> residual overcurrent element IE1>>> Enable (ON≡Inhibit) IE1>>disbylE>>> & IE1>> inhibition Start IE1>>> Start IE1>>> Start IE1>>> IE1>>>ST-K IE1>>>ST-L State E 1>>>def (Pickup outside CLP) & E1>>>RES E1>>>def ≥ I >>> E1>>>RES &...
Page 162 Start I >>> & Enable (ON≡Enable) & Trip I >>> BLK1IE1>>> IE1>>>BLK1 & & BLK4IN IE1>>> Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IE1>>> Block1 Block2 input enable (ON≡Enable) IE1>>>BLK2IN...
Page 163: Residual Overcurrent - 50N(Comp)/51N(Comp) Side H Or Side L
— Residual overcurrent - 50N(Comp)/51N(Comp) side H or side L Preface The protection, which employs the residual current IEC measurement calculated vectorially from the three phase currents, can be usefully employed in cases in which the residual current measured directly is not available (for example when the core balance transformer in not available) or when the high-impedance restricted earth fault differential protection is enabled.
Page 164 setting ON the Disable IE(H)>> by start IE(H)>>> (IE(H)>>disbyIE(H)>>>) parameter available inside the Set \ Proﬁ le A(or B) \ Calculated residual overcurrent-50N(Comp)/51N(Comp) side H \ IE(H)>>> Element \ Setpoints menus for side H element, the IE(L)>>disbyIE(L)>>> parameter available inside the Set \ Proﬁ le A(or B) \ Calculated residual overcurrent-50N(Comp)/51N(Comp) side L \ IE(L)>>>...
Page 165 • One or more output relays designed for output selective block. Only when the committed pilot wire are used the continuity check of the pilot wire link is active Use of committed pilot wire input BLIN1: • The protection is blocked off according the selectivity block criteria when the input BLIN1 is active. The information about phase or phase+earth block may be select programming the ModeBLIN1 parameter inside the Set \ Proﬁ...
Page 166 tEC> IEC> Enable IEC>Curve IEC> IECCLP> tEC> IEC> IECCLP> tEC> IECCLP>Mode tECCLP> IEC> Element Start IEC> Trip IEC> IEC>2ndh-REST ≥ IEC> inhibition CLPIEC> & IEC>BF Start I2ndh> IEC>BF & Trip IEC> IEC>BLK1 Start IEC> BLK1IEC> & & Block1 IEC>BLK2IN Start IEC> BLK2INIEC>...
Page 167 ON≡Enable IEC> residual overcurrent element IEC> Enable ON≡Inhibit IEC> inhibition (from IEC>> and/or IEC>>> residual overcurrent element) Start IEC> > State & IEC>ST-K ≥ I > IEC>ST-L (Pickup outside CLP) ≥1 > State EC>inv > Curve EC>RES & EC>def ≥ I >...
Page 168 Start IEC> & Enable (ON≡Enable) Trip IEC> & BLK1IEC> IEC>BLK1 & & BLK4IN IEC> Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IEC> Block1 Block2 input enable (ON≡Enable) IEC>BLK2IN &...
Page 169 (ON≡Inhibit) ON≡Enable IEC>> residual overcurrent element IEC> disbylEC>> IEC>> Enable & IEC> inhibition Start IEC>> ON≡Inhibit IEC>> inhibition (from IEC>>> residual overcurrent element) Start IEC>> Start IEC>> IEC>>ST-K IEC>>ST-L State EC>>def (Pickup outside CLP) & EC>>RES EC>>def ≥ I >> EC>>RES &...
Page 170 Start IEC>> & Enable (ON≡Enable) & Trip IEC>> BLK1IEC>> IEC>>BLK1 & & BLK4IN IEC>> Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IEC>> Block1 Block2 input enable (ON≡Enable) IEC>>BLK2IN &...
Page 171 (ON≡Inhibit) IEC>disbylE>>> & IEC> inhibition Start IEC>>> ON≡Enable IEC>>> residual overcurrent element IEC>>> Enable (ON≡Inhibit) IEC>>disbylEC>>> & IEC>> inhibition Start IEC>>> Start IEC>>> Start IEC>>> IEC>>>ST-K IEC>>>ST-L State EC>>>def (Pickup outside CLP) & EC>>>RES EC>>>def ≥ I EC>>> EC>>>def EC>>>RES &...
Page 172 Start IEC>>> & Enable (ON≡Enable) & Trip IEC>>> BLK1IEC>>> IEC>>>BLK1 & & BLK4IN IEC>>> Logic INx t INx t Block4 Block1 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IEC>>> Block1 Block2 input enable (ON≡Enable) IEC>>>BLK2IN &...
Page 173: Minimum Power Factor - 55
— Minimum power factor - 55 Preface Two independent time adjustable thresholds with lag, lead or lag/lead programmable power factor. For each elements can a consensus for start / trip operation may be set only if the circuit breaker is closed and after an adjustable enabling time, the closure (tARM-cosphi<) .
Page 174 If the CB position control is enabled (CB-55 = ON available inside the Set \ Proﬁ le A(o B) \ Mini- • mum power factor - 55 \ Cphi< Element \ Setpoints menu) the start is issued when the following conditions are meet: 1) cos ϕ...
Page 175 State = ON ≡ Enable 55 element CPhi< Enable StartCPhi1< C P h i1 < CPhi1<ST-K CPhi1<ST-L ( Q > 0) c o s < C Ph i 1 < ( 0 ≤ ≤ π ) < CPhi1 C P h i 1 < <...
Page 176 State = ON ≡ Enable 55 element CPhi< Enable StartCPhi2< C P h i2 < CPhi2<ST-K CPhi2<ST-L ( Q > 0) c o s < C Ph i 2 < ( 0 ≤ ≤ π ) < CPhi2 C P h i 2 < <...
Page 177: Overvoltage - 59
— Overvoltage - 59 Preface Two operation thresholds, independently adjustable (U>, U>>) with adjustable delay (t >, t >>). The ﬁ rst one may be programmed with deﬁ nite or inverse time, while the second threshold operates with deﬁ nite time characteristic. Each threshold may be separately enabled or disabled.
Page 178 The ﬁ rst threshold trip (U>) may be inhibited by start of the second threshold (U>>) by setting ON the U> Disabling by U>> start (U>disbyU>>) parameter available inside the Set \ Proﬁ le A(or B) \ Overvoltage-59 \ U>> Element \ Setpoints menu. Utype59 Logic59 Common conﬁguration...
Page 179 Logical block (Block1) If the U>BLK1 and/or U>>BLK1 enabling parameters are set to ON and a binary input is designed for logical block (Block1), the protection is blocked off whenever the given input is active. The trip timer is held in reset condition, so the operate time counting starts when the input block goes down.
Page 180 t [s] 10000 >inv · [(U/U> ) - 1] 1000 > = 100 s > = 10 s > = 1 s > = 0.1 s U /U >inv 0.01 Note: match of operating and setting time takes place when U/U> = 1.5 Inverse time operating characteristic concerning the ﬁrst threshold (U>) of the overvoltage element - 59 F_59-Char.ai...
Page 181: Residual Overvoltage - 59N
— Residual overvoltage - 59N Preface Two operation thresholds, independently adjustable with adjustable delay. The ﬁ rst one (U >) may be programmed with deﬁ nite or inverse time, while the second threshold operates with deﬁ nite time characteristic. Each threshold may be separately enabled or disabled. The ﬁ...
Page 182 TV monitoring (74VT) For both measuring criteria, a block of the U > and U >> threshold may be select when the 74VT function is active (internal and/or external). The blocking enabling parameters 74VTint59N and- 74VText59N are available inside the Set \ Proﬁ le A(or B) \ Residual overvoltage-59N \ Common conﬁ...
Page 183 ON≡Enable UE> residual overvoltage element Start U > UE> Enable >ST-K State >ST-L E>def & > Curve UE>RES UE>def UE>inv ≥ E>def ≥1 UE>RES & UE> >TR-K State E>inv >TR-L RESET & ≥ E>inv Trip U > (ON≡Inhibit) > Inhibition Enable (ON≡Enable) 74VTint59N &...
Page 184 t [s] 10000 · UE>inv ) - 1] E>inv · UE>inv ) - 1] E>inv 1000 >= 100 s >= 10 s >= 1 s >= 0.1 s E>inv 0.01 E>inv Note: match of operating and setting time takes place when = 1.5 or = 1.5 E>inv...
Page 185: Negative Sequence Overvoltage - 59V2
— Negative sequence overvoltage - 59V2 Preface The element has an adjustable threshold with time deﬁ nite delay. Enabling or disabling may be performed through ThySette. Operation and settings The negative sequence voltage is calculated as: -j120° +j120° ·U ·U -j120°...
Page 186 Start U2> U2>ST-K U2>ST-L U2>def > State & U2>def U2>TR-K > ≥ U2>TR-L RESET Trip U2> Start U2> & Enable (ON≡Enable) & Trip U2> BLK1U2> U1<BLK1 & Logic Block1 INx t INx t n.c. INx t Block1 input (ON≡Block) INx t Block1 n.o.
Page 187: Low Impedance Restricted Ground Fault- 64Ref
— Low impedance restricted ground fault- 64REF Preface The restricted earth fault protection is used to detect the ground faults in a three-phase winding with star point connected to earth in the area between the CTs on side H and the CT on the neutral earthing.
Page 188 The current stabilization thus depends on the residual current values as well on the their displace- ment angle ϕ. ϕ Three operating conditions with ideal and matched measurement CTs (pE1 = +1 and ME =1) are considered: • Earth fault inside the protected zone, powered only from the starpoint The trip current is equal to I while, being I = 0, the stabilization current is: I...
Page 189 fault-64REF menu. The following block criteria are available: Logical block (Block1) If the 64REF-BLK1 enabling parameter is set to ON and a binary input is designed for logical block (Block1), the element is blocked off whenever the given input is active. The enabling parameters are available inside the menu Set \ Proﬁ...
Page 190 Maximum number of starts - 66 Preface The element performs a complementary task with respect to the thermal function: it prevents the mo- tor restarting when the conditions established by the motor manufacturer may be exceeded. Two different operating modes may be select: •...
Page 191 ON≡Enable 66 Enable Any change of Type66 setting S t ar t ing de t ec t ion Trip 66 = 0.1I R UN COUNTER L1... M a x[ I ] ≥ I L1... RESET Type 66 66TR-K & 66TR-L Type66 = NST Start ILR>...
Page 192: Ground Directional Overcurrent - 67N
— Ground directional overcurrent - 67N Preface Four operation thresholds, independently adjustable with adjustable delay. Each element can be enabled or disabled. The ﬁ rst two may be programmed with deﬁ nite or inverse time according the IEC and ANSI/IEEE standard, as well as with rectiﬁ...
Page 193 The operating mode may be selected by setting the Mode67N parameter, located inside the Set \ Proﬁ le A(or B) \ Directional earth fault overcurrent-67N \ Common conﬁ guration menu. The settable operating mode is I (module) or I*cos (projection). Trip sector (toward line) Half operating sector...
Page 194 VT supervision For all the four thresholds (I ), the operating mode when the 74VT function is ED> ED>> ED>>> ED>>>> active may be deﬁ ned: • OFF: no action are issued by 74VT. • Block: all the four thresholds are blocked when the 74VT function is active. •...
Page 195 ED>>>> - The residual voltage (U or U ) fundamental component overcomes the threshold (U ED> ED>> ED>>> ED>>>> while in the “Insens-Zone=ON” operating mode: - The residual current (I ) fundamental component overcomes the threshold (I ED> ED>> ED>>> ED>>>>...
Page 196 If the operation mode is switched to “not directional” (by the 74VT function), the start of any 67N threshold becomes active when the following is complied: - The residual current (I ) fundamental component overcomes the threshold (I ED> ED>> ED>>>...
Page 197 For every of the four thresholds the following block criteria are available: Logical block (Block1) If the IED>BLK1, IED>>BLK1, IED>>>BLK1 and/or IED>>>>BLK1 enabling parameters are set to ON and a binary input is designed for logical block (Block1), the concerning element is blocked off whenever the given input is active.
Page 198 IED> Enable IED>Curve IEDCLP>Mode ED>RES ED> def ED> inv EDCLP> inv ED> inv EDCLP> ED> def EDCLP> def Common conﬁgurations Start IED> IED> Element Trip IED> IED>BF Mode67N 3Votype67N IED>BF IED>BLK1 Trip IED> & Block1 BLK1IED> & I∙ cos Start IED> & CLPIED>...
Page 199 Common conﬁgurations State ED>def Mode67N 3Votype67N & ≥ I ED>def I ∙c os ≥1 State ED>inv Insens-Zone & O F F A =“OFF” A =“ON” ≥ I ED>inv ≥ M∙threshold A = ON - Change setting within CLP EDCLP>def EDCLP>inv Insens-Zone OFF State ED>def...
Page 200 Common conﬁgurations Settore intervento Mode67N 3Votype67N (direzione linea) State ED>def Angolo caratteristico & I∙ cos ∙cosϕ ≥ I Semiasse caratteristico ED>def ≥1 A =“OFF” Semiampiezza settore Insens-Zone State ED>inv angolare d’intervento soglia Φ o Φ OF F & ≥ M∙threshold A =“ON”...
Page 201 Common conﬁgurations Mode67N 3Votype67N I ∙c os Insens-Zone O F F ≥ M∙threshold ON≡Enable IED> directional earth fault IED> Enable Start IED> IED>ST-K D =“modulo” IED>ST-L (sheet 1) Mode67N ED>inv Curve ED> ED>RES D =“modulo” C =“proiezione” ED>def C =“proiezione” ED>RES (sheet 2) &...
Page 202 Start I > & Enable (ON≡Enable) & Trip I > BLK1IED> IED>BLK1 & & BLK4IN IED> Block1 Logic INx t INx t Block4 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IED> Block1 Block2 input enable (ON≡Enable) IED>BLK2IN...
Page 203 Common conﬁgurations State ED>>def Mode67N 3Votype67N & ≥ I I∙c os ED>>def ≥1 State ED>>inv Insens-Zone & O F F A =“OFF” A =“ON” ≥ I ED>>inv ≥ M∙threshold A = ON - Change setting within CLP EDCLP>>def EDCLP>>inv Insens-Zone OFF State ED>>def ≥...
Page 204 Common conﬁgurations Settore intervento Mode67N 3Votype67N State (direzione linea) ED>>def Angolo caratteristico & I∙co s ∙cosϕ ≥ I ED>>def Semiasse caratteristico ≥1 A =“OFF” Semiampiezza settore Insens-Zone State ED>>inv soglia angolare d’intervento Φ o Φ & ≥ M∙threshold A =“ON” ∙cosϕ...
Page 205 Common conﬁgurations Mode67N 3Votype67N I ∙cos Insens-Zone O F F ≥ M∙threshold ON≡Enable IED>> directional earth fault IED>> Enable Start IED>> IED>>ST-K D =“modulo” IED>>ST-L (sheet 1) Mode67N ED>>inv Curve ED>> ED>>RES D =“modulo” C =“proiezione” ED>>def C =“proiezione” ED>>RES (sheet 2) &...
Page 206 Start I >> & Enable (ON≡Enable) & Trip I > > BLK1IED>> IED>>BLK1 & & BLK4IN IED>> Block1 Logic INx t INx t Block4 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IED>> Block1 Block2 input enable (ON≡Enable) IED>>BLK2IN...
Page 207 Common conﬁgurations Mode67N 3Votype67N State ED>>>def & I∙cos ≥ I ED>>>def Insens-Zone EDCLP>>>def O FF ≥ M∙threshold A =“OFF” A =“ON” ≥ I A = ON - Change setting within CLP EDCLP>>>def Insens-Zone OFF TRIP State Insens-Zone ED>>>def & & sheet 3 ≥...
Page 208 Common conﬁgurations Settore intervento (direzione linea) Mode67N 3Votype67N Angolo caratteristico Semiasse caratteristico I ∙cos Semiampiezza settore soglia angolare d’intervento Insens-Zone Φ o Φ O FF ≥ M∙threshold Settore non intervento (direzione sbarre) State ED>>>def & ∙cosϕ ≥ I ED>>>def A =“OFF” A =“ON”...
Page 209 Common conﬁgurations Mode67N 3Votype67N I∙c os Start IED>>> Insens-Zone O FF IED>>>ST-K IED>>>ST-L ≥ M∙threshold ED>>>RES ED>>>def ON≡Enable IED>>> directional earth fault IED>>> Enable ED>>>RES & ED>>>def IED>>>TR-K IE>>>TR-L D =“modulo” RESET (sheet 1) Trip IED>>> Mode67N D =“modulo” C =“proiezione” A = Directional B = Non-directional C =“proiezione”...
Page 210 Start I >>> & Enable (ON≡Enable) & Trip I > >> BLK1IED>>> IED>>>BLK1 & & BLK4IN IED>>> Block1 Logic INx t INx t Block4 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IED>>> Block1 Block2 input enable (ON≡Enable) IED>>>BLK2IN...
Page 211 Common conﬁgurations State Mode67N 3Votype67N ED>>>>def & I ∙cos ≥ I ED>>>>def Insens-Zone EDCLP>>>>def O F F A =“OFF” A =“ON” ≥ M∙threshold ≥ I A = ON - Change setting within CLP EDCLP>>>>def Insens-Zone OFF TRIP State Insens-Zone ED>>>>def &...
Page 212 Common conﬁgurations Settore intervento (direzione linea) Mode67N 3Votype67N Angolo caratteristico I∙c os Semiasse caratteristico Semiampiezza settore Insens-Zone angolare d’intervento soglia Φ o Φ O FF ≥ M∙threshold Settore non intervento (direzione sbarre) State ED>>>>def & ∙cosϕ ≥ I ED>>>>def A =“OFF” A =“ON”...
Page 213 Common conﬁgurations Mode67N 3Votype67N I ∙c os Start IED>>>> Insens-Zone IED>>>>ST-K O FF IED>>>>ST-L ≥ M∙threshold ED>>>>RES ED>>>>def ON≡Enable IED>>>> directional earth fault IED>>>> Enable ED>>>>RES & ED>>>>def IED>>>>TR-K IE>>>>TR-L D =“modulo” RESE T (sheet 1) Trip IED>>>> Mode67N D =“modulo” C =“proiezione” A = Directional B = Non-directional C =“proiezione”...
Page 214 Start I >>>> & Enable (ON≡Enable) & Trip I >> >> BLK1IED>>>> IED>>>>BLK1 & & BLK4IN IED>>>> Block1 Logic Block4 INx t INx t ≥1 n.c. INx t INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IED>>>> Block1 Block2 input enable (ON≡Enable) IED>>>>BLK2IN...
Page 215: Ground Directional Overcurrent With Calculated Residual Current - 67N(Comp)
— Ground directional overcurrent with calculated residual current - 67N(Comp) Preface Four adjustable threshold with programmable operate time are available with characteristics similar to the 67N protection described in the previous paragraph; the main difference is the residual cur- rent that is vectorially calculated on the sides of H or L currents. The protection sensitivity is lower compared to that obtainable with a direct measurement of the residual current from the balance transformer.
Page 216 The operating mode may be selected by setting the Mode67N parameter, located inside the Set \ Proﬁ le A(or B) \ Directional earth fault overcurrent-67N(Comp) \ Common conﬁ guration menu. The settable operating mode is I (module) or I*cos (projection). Trip sector Half operating sector (toward line)
Page 217 For each of the four thresholds (I >, I >>, I >>>, I >>>>), the characteristic angle (ϑ >, ϑ >>, ϑ >>>, ϑ >>>>) may be adjusted (setting range 0…359° common for the three phases). The the characteristic angle setting (positive when clockwise compared the polarizing voltage) speciﬁ...
Page 218 Module If the module principle and the operation mode is not switched to “not directional” (by the 74VT func- tion), the start of any 67N(Comp) threshold becomes active when the following A) and B) conditions are contemporaneously active: in the “Insens-Zone=OFF” operating mode: - The residual current (I or I ) fundamental component overcomes the threshold (I...
Page 219 that is the -β ≤ (Θ -Φ ) ≤ +β condition is fulﬁ lled. If the operation mode is switched to “not directional” (by the 74VT function), the start of any 67N threshold becomes active when the following is complied: - The residual current (I ) fundamental component overcomes the threshold (I EDC>...
Page 220 If the CLP function (Cold Load Pick-up) is enabled for threshold change, the selected threshold may be changed for an adjustable time interval, starting from the circuit breaker closure. This operating mode (ON-Change setting = IEDCCLP> Mode, IEDCCLP>> Mode, IEDC- CLP>>>...
Page 221 Internal selective block (Block4) As well as to send or transmit a selective block toward other protective relays, each protective element may be enabled for receive or transmit a selective block from/to other internal protective elements. The internal selective block of one or more element concerning the directional earth fault overcurrent function may be enabled/disabled by means the IEDC>BLK4, IEDC>>BLK4, IEDC>>>BLK4 and/or IEDC>>>>BLK4 parameters (virtual input and output common to all protective thresh- olds);...
Page 222 IEDC> Enable IEDC>Curve IEDCCLP>Mode EDCCLP> EDC>RES EDC> def EDCCLP> def EDC>def EDC> inv EDCCLP> inv EDC>inv Start IEDC> IED> Element Trip IEDC> IEDC>BF IEDC>BF IEDC>BLK1 Trip IEDC> & Block1 BLK1IEDC> & Common conﬁgurations & Start IEDC> CLPIED> IEDC>BLK2IN Start IEDC> BLK2INIED>...
Page 223 Common conﬁgurations State EDC>def & 3Votype67NC IECtype67NC ≥ I EDC>def ≥1 State EDC>inv Mode67NC & A =“OFF” A =“ON” ≥ I EDC>inv I ∙c o s A = ON - Change setting within CLP Insens-Zone 67N(Comp) EDCCLP>def EDCCLP>inv O F F ≥...
Page 224 Common conﬁgurations A = ON - Change setting within CLP Settore intervento (direzione linea) State EDC>def Angolo caratteristico & 3Votype67NC IECtype67NC ∙cosϕ ≥ I A =“OFF” EDC>def Semiasse caratteristico ≥1 Semiampiezza settore Mode67NC State EDC>inv soglia angolare d’intervento Φ o Φ &...
Page 225 Common conﬁgurations 3Votype67NC IECtype67NC Mode67NC I∙c os Insens-Zone 67N(Comp) OF F ≥ M∙threshold ON≡Enable IEDC> directional earth fault IEDC> Enable Start IEDC> IEDC>ST-K D =“modulo” IEDC>ST-L (sheet 1) Mode67NC EDC>inv Curve EDC> EDC>RES D =“modulo” C =“proiezione” EDC>def C =“proiezione” ED>RES (sheet 2) &...
Page 226 Start I > & Enable (ON≡Enable) & Trip I > BLK1IEDC> IEDC>BLK1 & & BLK4IN IEDC> Block1 Logic INx t INx t Block4 n.c. INx t ≥1 INx t Block1, Block2, Block4 Block1 n.o. Binary input INx & BLK2IN IEDC> Block1 Block2 input enable (ON≡Enable) IEDC>BLK2IN...
Page 227: Overfrequency - 81O
— Overfrequency - 81O Preface Two operation thresholds, independently adjustable with adjustable delay are provided. Each threshold may be separately enabled or disabled. The ﬁ rst threshold trip may be inhibited by start of the second threshold. Operation and settings The frequency, acquired from U phase-to-phase input voltages is compared with the...
Page 228 For every of the two thresholds the logic block can be set. Logical block (Block1) If the f>BLK1 and/or f>>BLK1 enabling parameters are set to ON and a binary input is designed for logical block (Block1), the protection is blocked off whenever the given input is active. The trip timer is held in reset condition, so the operate time counting starts when the input block goes down.
Page 229: Underfrequency - 81U
— Underfrequency - 81U Preface Four operation thresholds, independently adjustable with adjustable delay are provided. Each threshold may be separately enabled or disabled. Operation and settings The frequency, acquired from U phase-to-phase input voltages is compared with the setting values; a start is issued when the frequency goes down the adjustable threshold (START); af- ter expiry of the associated operate time a trip command is issued;...
Page 230 For every of the four thresholds the logic block can be set. Logical block (Block1) If the f<BLK1, f<<BLK1, f<<<BLK1 and/or f<<<<BLK1 enabling parameters are set to ON and a binary input is designed for logical block (Block1), the protection is blocked off whenever the given input is active.
Page 231 (ON≡Inhibit) f<disbyf<<< & f< inhibition (ON≡Inhibit) f<<disbyf<<< & f<< inhibition f<<< Start f<<< f<<<ST-K f<<<ST-L f<<< ≤ & <<< Max (U ) ≥ 2 0 % U (ON≡Inhibit) From 4th element f<<< inhibition <<< f<<<TR-K f<<<TR-L RESET f<<< Trip f<<< Start &...
Page 232 Differential protection 87G-87M-87T Preface Stabilized Differential for Generator, Motor and two-winding power transformers with dual-slope percentage characteristic. Based on the selection of the protected object type is activated (Transformer) or not (Motor-Genera- tor) the second and ﬁ fth harmonic restraint for the differential protection element. Deﬁ...
Page 233 M(w) is a compensating factor in the current amplitude of the w side; it expresses the values that are multiplied by the currents of the w side in order to obtain an amplitude equal to that of the currents on one side chosen as a reference. If inside the Set \ Base menu the MatchType=ESTERNAL parameter is set (external compensation with adapter CTs), then: M(w) = 1...
Page 234 w side. It expresses the compensation which the current displacements are corrected so that they are in-phase (zero phase shift) with currents on the reference side and possibly ﬁ ltered by the zero sequence components. It allows sw correction of the phase currents displacement on the sides of the transformer due to the transformer vector group, any phases reversal of cyclic sequence and the elimination of any zero sequence components that may occur on some sides as a result of connection of the windings of the transformer and its ground against ground faults outside the zone of differential protection.
Page 235 Gnd(w) = Ou Gnd(w) = In c(w) w = H, L w = H, L w = H, L -1/3 -1/3 C(w) = -1/3 -1/3 C(w) = -1/3 -1/3 Applied to the reference side w for phase compensation or to Same as Yy0 adapter CTs with transformation ratio 1 / the w secondary side of power 1 on the side w and connected with the tertiary delta...
Page 236 Gnd(w) = Out Gnd(w) = In c(w) w = H, L w = H, L w = H, L -1/3 -1/3 C(w) = -1/3 -1/3 -180 C(w) = -1/3 -1/3 Applied to the w secondary side Same as Yy0 adapter CTs with transformation ratio 1 / of power transformers Yy6, Dd6, 1 on the side w and connected with the tertiary delta Same as Yy0 adapter CTs with transformation...
Page 237 Calculation of the differential and stabilizing currents Following calculation is performed by device: Instantaneous value of stabilization currents: = {i + sign[i ∙ i ] ∙ i } /2 L1c(H) L1c(L) L1c(H) L1c(L) +sign[i ∙ i ] ∙ i } /2 L2c(H) L2c(L) L2c(H)
Page 238 External fault stabilization by means of operating dual-slope percentage characteristic The start of the ﬁ rst threshold of the differential protection on L1 phase (ST I -L1) occurs when all the following conditions are met: • 87 Enable = ON •...
Page 239 If the three conditions that led to the start of the second threshold of the differential protection on L1, L2, L3 phases are maintained all for the duration of intentional delay t >, when the time expires the element trips. The I >>...
Page 240 enabled for transmit a selective block from/to other internal protective elements. With single enable ﬂ ag for ﬁ rst or second threshold of differential protection the element can pro- duce the output block (committed pilot wire or output relay) programmed for logic selectivity of side H and/or side L if the 87T-BLK1parameter is set to ON inside the Set \ Proﬁ...
Page 241 CROSS H-REST parameter By adjusting OFF the CROSS H-REST parameter, the differential protection can be blocked at one phase (L1 or L2 or L3) if the harmonic restraint is started for that phase (ST-H-L1 REST or REST-H-ST H-ST or L2-L3 REST). By adjusting ON the CROSS H-REST parameter, the differential protection can be blocked in all three phases (L1 and L2 and L3) if the harmonic restraint is started in at least one phase (ST H- REST).
Page 242 Harmonic restraint Saturation detector Biased dual slope percentage characteristic Stabilization and differential current measurement Lxc(H) TRIP Lx(H) Magnitude, polarity, SIDE H phase and ciclic sequence NO TRIP and zero sequence currents Lx(L) SIDE L compensation Lxc(L) General logic diagram of the differential elements 87G-87M-87T all-F87.ai MatchType MatchType...
Page 243 Harmonic restraint 5th-REST> tHREST-RES d5L1 ST 5th-REST-L1 d5L1 d1L1 DFT5 ST 5th-REST ≥ > ≥1 d5L1 d1L1 5th-REST d5L2 ST 5th-REST-L2 ST H-REST d5L2 d1L2 DFT5 ≥ > ≥1 d5L2 d1L2 5th-REST ST 2nd-REST d5L3 ST 5th-REST-L3 d5L3 d1L3 DFT5 ≥1 ≥...
Page 244 ST Id> from saturation detector ≥1 Id> ST Id>> ≥1 87 Enable=ON ≥ I > d1L1 td> & ST Id>-L1 TR Id>-L1 & ≥ (K1/100)∙I d1L1 ≥ (K2/100)∙I d1L1 SL1-Q Id>> td>> TR Id>>-L1 ST Id>>-L1 & ≥ I >> d1L1 Id>...
Page 245 ST-Iph BLK2 All BLK2OUT outputs F-IPh BLK2OUT-Iph of phase elements BLK2OUT-IPh-K F-IPh ≥1 (see BLK2OUT chapter) BLK2OUT-IPh-L Start 87T 87T Block2 OUT BLK2OUT-IE & Block2 output BLK2OUT-IE-K 87TBLK2OUT (ON≡Enable) BLK2OUT-IE-L F-IPh/IE BLK2OUT-Iph/IE BLK2OUT-IPh/IE-K F-IPh/IE ≥1 BLK2OUT-IPh/IE-L Start xx & xxBLK2OUT A = OFF F-IE B = ON IPh...
Page 246: Breaker Failure - Bf
— Breaker failure - BF Preface The protection is available in all versions. When the protection issues a trip command but, because an anomaly, the circuit breaker cannot open, the breaker failure protection issues a back-up trip command to trip adjacent circuit breakers. The breaker failure function may be started by internal protective function (if associated with BF) or by external protections.
Page 247 > Start IBF> Max I ...I ≥ I > Start BF > Start IEBF> ≥1 Start BF ≥ I > & CB Input “0” Logic INx t INx t Trip BF n.c. INx t INx t RESET n.o. CB Input OFF Binary input INx Trip BF CB Input ON...
Page 248: Logical Block - Block1
— Logical block - BLOCK1 To the purpose to block off the trip of one protection element, the logical block function (Block1) may be matched with binary inputs. The binary-matching may be set inside the Set \ Board 1(2) inputs \ Binary input IN1-1...(IN1-x) menus; to the purpose the Block1 parameter must be selected for INx matching (x=1, 2) A protective element, where the logical block is enabled, is blocked off whenever the given input is For a given protective element, the logical block state is reading available (ThySetter and communi-...
Page 249 Z<-BLK1 21 element Z<<-BLK1 21 element 27 element U<BLK1 27 element U<<BLK1 27V1 element U1<BLK1 32P element P1>BLK1 P1>>BLK1 32P element 32R element P->BLK1 P1>>BLK1 I<BLK1 37 element P1<BLK1 37P element 37P element P1<<BLK1 40 element 40-ALBLK1 40 element XC1-XD1-BLK1 40 element XC2-XD2-BLK1 I2AL>BLK1...
Page 250: Selective Block -Block2
— Selective block -BLOCK2 Preface The logic selectivity function has been developed to the purpose to reduce the clearing times for faults closes to the source. The output blocking circuits of one or several Pro_N relays, shunted together, must be connected to the input blocking circuit of the protection relay, which is installed upwards in the electric plant.
Page 251 or a LED (tB-K and or tB-K parameters inside Set \ Proﬁ le A(or B) \ Selective block - BLOCK2 \ Selective block IN submenu. Start I> & Trip I> Block2 input enable (I> element) & BLK2IN I> I>BLK2IN (ON≡Enable) &...
Page 252 To enable the selectivity logic input for a generic xx element, the xxBLK2IN parameters mu be set to ON inside the Set \ Parametri di conﬁ gurazione A (o B) \ xxx \ Setpoints menus concerning all element where the selective block is available, eg: I>BLK2IN inside the Set \ Proﬁ...
Page 253 Start I> ST-Iph BLK2 BLK2OUT-Iph I> Block2 OUT & Block2 output BLK2OUT-IPh-K I>BLK2OUT (ON≡Enable) BLK2OUT-IPh-L F-IPh BLK2OUT-IE All other BLK2OUT outputs of phase elements BLK2OUT-IE-K F-IPh ≥1 F-IPh/IE BLK2OUT-IE-L BLK2OUT-Iph/IE [I2>, I2>> (46M), DthAL1, DthAL2, Dth> (49), BLK2OUT-IPh/IE-K I>>, I>>> (50/51), ILR>, ILR>> (51LR), F-IPh/IE ≥1 I-I/U>, I-I/U>>...
Page 254 In the following example the output pulses must be enabled inside the device B only (2nd logic se- lectivity level) and D (1st logic selectivity level). Setting example In reference to the above shown schematic diagram, the logic selectivity is performed by means of the dedicated I/O for the short circuit elements of A, B and C protective relays, so that if a fault arises in (2), the open order or circuit breaker CB2 is issued and no trip is issued by A device.
Page 255: Internal Selective Block -Block4
— Internal selective block -BLOCK4 As well as to send or transmit a selective block toward other protective relays, each protective element may be enabled for receive or transmit a selective block from/to other internal protective elements. The internal selective block of one or more element may be enabled/disabled by means the Ixxx- BLK4 parameters (virtual input and output common to all protective thresholds);...
Page 256 As typical application an internal and external selective block can be used for protection of parallel power transformers. On occurrence of a fault inside the transformer T2, the directional phase or ground directional overcurrent element concerning the P2 relay trips to open the CB2. The 50 and 50N elements of both relays should trip if no grading margin is set in order to provide selectivity with the directional elements.
Page 257 Start I>> (P2 relay) Start IPD>> (P2 relay) FI-Iph BLK4OUT (IPD>> internal block output of P2 relay) BLK4IN I>> (I>> internal block input of P2 relay) F-Iph/IE BLK2OUT-Iph/IE (P2 relay) PD>> (P2 relay) Trip IPD>> (P2 relay) Trip I>> Start I>> (P1 relay) Start IPD>>...
Page 258: Logical Block Summary
— Logical block summary PROTECTIVE ELEMENTS Underimpedance - 21 Z< Element Underimpedance - 21 Z< Element Undervoltage - 27 U< Element Undervoltage - 27 U<< Element Positive sequence undervoltage - 27V1 U1< Element Directional active overpower - 32P P1> Element Directional active overpower - 32P P2>...
Page 259 PROTECTIVE ELEMENTS g g g g Directional earth fault overcurrent - 67N IED> Element g g g g Directional earth fault overcurrent - 67N IED>> Element g g g g Directional earth fault overcurrent - 67N IED>>> Element g g g g Directional earth fault overcurrent - 67N IED>>>>...
Page 260: Remote Tripping
— Remote tripping Preface Some output relays may be programmed for remote trip function resulting from a command coming from a binary input. If a binary input is designed for remote trip acquisition, an output relay allocated to the same function is triggered when the input (IN1 and/or IN2) is active.
Page 261: Frequency Tracking
— Frequency tracking Within the frequency range 20...63 Hz (f = 50 Hz or 60 Hz) a frequency tracking algorithm adjusts the currents sampling frequency, so as to keep the number of samples in any given period constant. With 64 samples for periods the sampling rate is adjusted from 1.28 kHz with f = 20 Hz to 4.032 kHz with f= 63 Hz.
Page 262: Second Harmonic Restraint - 2Ndh-Rest
— Second Harmonic Restraint - 2ndh-REST Preface When a power transformer is energized, as well know an inrush current ﬂ ow in the side that have been energized with an amount and duration that depend by many factors which: • Instantaneous value of the supply voltage at the time where the transformer is energized •...
Page 263: Cold Load Pickup - Clp
— Cold Load Pickup - CLP Preface CLP feature allows selected thresholds to be changed or blocked for an adjustable time in order to overcome transient overcurrents. The trigger of the CLP feature is the logical condition of circuit breaker closed, that Pro-N relay de- tect by means of two digital inputs connected to the circuit breaker auxiliary contacts 52a and 52b.
Page 264: Cold Load Pickup - Clp For Motor-Generator Protection
— Cold Load Pickup - CLP for motor-generator protection Preface CLP feature allows selected thresholds to be changed or blocked for an adjustable time in order to overcome transient overcurrents. • If the CLP (Cold Load Pick-up) function is set for threshold blocking the selected element is blocked for an adjustable time according the selected mode for the control of starting (starting from closure of the circuit breaker or based on the IRUN threshold) •...
Page 265 Start Ixx STEADY STATE THRESHOLD I nput x x RES Operate time x x RES C L P xx RE SET TRANSIENT THRESHOLD Trip Ixx A = ON - Change setting Output t CLPxx CLPxx B = OFF Starting control C = ON - Element blocking A = ON - Change setting B = OFF...
Page 266: Summary Of Elements Where Second Harmonic Restraint And Cold Load Pickup Functions May Be Enabled
— Summary of elements where second harmonic restraint and Cold Load Pickup functions may be enabled PROTECTIVE ELEMENTS Negative sequence for Line-Transformer - 46M I2> Element Negative sequence for Line-Transformer - 46M I2>> Element Thermal image for Line-Transformer- 49LT DthAL1 Alarm Element Thermal image for Line-Transformer DthAL2 Alarm Element Thermal image for Line-Transformer - 49 Dth>...
Page 267: Ct Supervision - 74Ct
— CT supervision - 74CT Preface The CT monitoring function is employed to issue an alarm when secondary phase CTs side H and side L and/or phase input of the relay failure are detected. Interruptions are detected by means of a symmetry criterion of the I input currents.
Page 268: Vt Supervision - 74Vt
— VT supervision - 74VT Preface The protection is available in all versions. The VT monitoring function is employed to issue an alarm when secondary phase VTs and/or phase in- put failure are detected; typical faults are internal faults, fuse failure, fault on the interconnecting wires or MCB tripping.
Page 269 The block output can be enabled or disabled; the 74VT-BK-EN parameter is available inside the Set \ Proﬁ le A(or B) \ VT supervision - 74VT menu. The alarm output goes ON after an adjustable delay (t >); it may be assigned to the selected VT-AL 74VT-AL-K output relays inside the Set \ Proﬁ...
Page 270: Trip Circuit Supervision - 74Tcs
— Trip circuit supervision - 74TCS Preface The protection is available in all versions. The trip circuit can be monitored to signal possible anomalies that would lead to the missing opening of circuit breaker when trip and/or operator command are issued. Circuit interruption as well as missing of auxiliary voltage and/or coil faults are detected.
Page 271 Logic TCS1 INx t INx t Start 74TCS n.c. INx t INx t n.o. Start 74TCS 74TCS-ST-K Binary input INx 74TCS-ST-L & Logic INx t INx t TCS2 74TCS-TR-K 0.6 s n.c. INx t INx t & 74TCS-TR-L n.o. RESET Binary input INx Trip 74TCS Trip 74TCS...
Page 272 Start 74TCS TCS1 Logic INx t INx t Start 74TCS 74TCS-ST-K 74TCS-ST-L n.c. INx t INx t n.o. Binary input INx 74TCS-TR-K 40 s & Enable (ON≡Enable) 74TCS-TR-L 74TCS Enable RESET Trip 74TCS Trip 74TCS Start 74TCS & Enable (ON≡Enable) &...
Page 273: Circuit Breaker Supervision
— Circuit breaker supervision Preface Several diagnostic metering and monitoring function are available: • By means 52a and 52b auxiliary contacts, the CB position is acquired. Depending on such information the Open and/or Close commands can be safely issued by user. •...
Page 274 State N.Open Mode- N .Open N .Open N.Open-K & N.Open-L From CB position Opening transition ≥ CB Diagnostic - Number of trips State SumI Mode-SumI SumI SumI-K & SumI-L Sum I From CB position ≥ Opening transition SumIL1 SumIL2 SumIL3 CB Diagnostic - Cumulative tripping currents State SumI^2t Mode-SumI^2t...
Page 275: Virtual I/O
— Virtual I/O Preface By ThySetter and ThyVisor software tools the type of operation and links between outputs (Virtual Output - VOUT1 ... 16) and virtual inputs (Virtual Inputs - VIN1 ... VIN32) may be deﬁ ned using RPC or IEC 61850 communication protocols over Ethernet network.
Page 276 Each Virtual input may be matched to one of the following functions: Virtual inputs FUNCTIONS VIN1 VIN1 VIN1 VIN1 VINx VINx VINx VINx VIN32 VIN32 VIN32 VIN32 Fun A Fun B Fun C Fun A Fun B Fun C Fun A Fun B Fun C Reset LEDs...
Page 277 Each Virtual output may be matched to one of the following functions: Virtual outputs VOUT1 Virtual outputs VOUT2...16 FUNCTIONS Start Start Trip Trip Input Input Start Start Trip Trip Input Input Mask1 Mask2 Mask1 Mask2 U<ST U1<ST UE>>ST U2>ST DthAL1 DthAL2 I(L)>ST I(L)>>ST...
Page 278 Each Virtual output may be matched to one of the following functions: Virtual outputs VOUT1 Virtual outputs VOUT2...16 FUNCTIONS Start Start Trip Trip Input Input Start Start Trip Trip Input Input Mask1 Mask2 Mask1 Mask2 74TCS-TR BF-TR TEST_TRIP IN10 IN11 IN12 IN13 IN14...
Page 279: Demand Measures
— Demand measures Demand measures are calculated as: Fixed demand Fixed demand I L1FIX L2FIX L3FIX Every ﬁ xed demand period t an average magnitude is calculated based on samples taken every 1 second. Update is carried out at the end of the same period. The ﬁ xed demand measures may be reset to zero by means the Reset on demand measures command (Thysetter Commands menu).
Page 280: Measures, Logic States And Counters Measures
M E A S U R E S , L O G I C S T A T E S A N D C O U N T E R S — Measures Measure Parameter Symbol Direct Lock frequency Phase-to-phase frequency Phase-to-phase frequency Phase-to-phase frequency RMS value of fundamental component for phase currents side H...
Page 281 Measure Parameter Symbol Power Total active power Total reactive power Total apparent power Power factor CosPhi Phase active power side L Phase reactive power side L Phase L1 power factor side L CosPhiL1 Phase L2 power factor side L CosPhiL2 Phase L3 power factor side L CosPhiL3 Impedance...
Page 282: Protection States
— Protection states For each protection threshold, the following data are available: ON/OFF • Start ON/OFF • Trip ON/OFF • Logic block (Block1) ON/OFF • Selective block (Block2) ON/OFF • Cold Load Pickup — Delayed inputs The binary input states, acquired downstream the delay timers are available: ON/OFF •...
Page 283: Relays
— Relays OK/NOT OK • KC1-2 Diagnostic ON/OFF • KS1-1 State OK/NOT OK • KS1-2 Diagnostic • ON/OFF • KS1-16 State OK/NOT OK • KS1-16 Diagnostic — Counters For every element two set of counters are available (Partial counters and Total counters); the partial counters can be cleared by the user level, while the Total counter reset can be achieved with pass- word (Session Level 1).
Page 284: Pilot Wire Diagnostic
OK/NOT OK • System diagnostic OK/NOT OK • Device diagnostic OK/NOT OK • Program diagnostic OK/NOT OK • Data-base boot OK/NOT OK • Data-base runtime OK/NOT OK • DSP boot OK/NOT OK • DSP run-time OK/NOT OK • Memory boot OK/NOT OK •...
Page 285: Event Recording - Ser
Calculated residual voltage Displacement angle of I respect to U L1(L) L1Lr Displacement angle of I respect to U L 2(L) L2Lr Displacement angle of I respect to U L 3(L) L3Lr Displacement angle of U respect to I Displacement angle of U respect to I Displacement angle of U respect to I...
Page 286 COMTRADE Records are recorded in COMTRADE format; (Common Format for Transient Data); This is a standard for the data exchange for various types of tests or simulation datas, etc, for power system applica- tions. The measurements are recorded in ASCII or BINARY format. COMTRADE ﬁ les always come by pairs: •...
Page 287 Side L, L3 power factor CosPhiL3 Side L resistive component of phase impedance L1 Side L reactive component of phase impedance L1 Side L phase impedance L1 Side L Impedance Side L second harmonic of phase currents L1L...3L-2nd Ratio of max 2nd harmonic of phase currents/comp. fond. side L -2nd Temperature T1...T8...
Page 288: Installation
I N S T A L L A T I O N PACKAGING Packaging consists of a paperboard packaging guaranteeing adequate protection for transport and storage under normal environmental conditions. The Pro-NX protection relays must be stored within the required temperature limits; the relative humidity should not cause condensation or formation of frost.
Page 289 • Remove the two vertical frames for access the holes for the ﬁ xing screws; the frames are snapped • Insert the device into the slot. • Fit the device to the panel with four screws. • Replace the vertical frames NVA100X-D - Manual - 02 - 2016 INSTALLATION...
Page 290 Rack mounting For mounting inside a standardized 19-inch system (EIA 310-D, IEC 60297 and DIN 41494 SC48D), the MAR adapter is required (available on request). 482.6 482.6 Rack mounting Rack mounting Rack-mount.ai Rack-mount.ai NVA100X-D - Manual - 02 - 2016 INSTALLATION...
Page 291: Electrical Connections
Devices must be installed by qualiﬁed personnel only. CAUTION CAUTION No liability is accepted from Thytronic due to improper use. No liability is accepted from Thytronic due to improper use. For the A1...A8, B1...B10 and C1...C8 screw terminals with following characteristics are available: •...
Page 292 In particular, consumption of the relay input circuit must not exceed 0.2 VA while the load (expressed in VA) constituted by the conductors is given by: 0.018 × L × I where: the overall length, expressed in m, of the two conductors in relation to each phase; nominal current of the line CT expressed in A;...
Page 293 Core balanced CT The current balance transformer, when used for measuring residual current, must be crossed in the same direction by all active conductors and hence, also by the neutral conductor if distributed, with the exception of the ground connection protective conductor. The drawing below shows cases of assembly of the toroid on unscreened and screened cables;...
Page 294 Binary inputs The input circuits are voltage-free; activation requires the application of a power source, preferably the same auxiliary voltage present in the switchboard. The inputs are dimensioned for a wide range of operation and does not require any hw and / or sw programming.
Page 295 Output relays The the base conﬁ guration includes 16 logic inputs (IN1-1. .. IN1-16) and 8 output relays (KC1-1. .. KC1-8) and can be expanded with: • One board (OC2F) with eight relays KC2-1...KC2-8 and one board (IN2D) with with sixteen binary inputs (IN2-1...IN2-16) •...
Page 296 Ethernet ports Pro_NX relays are supplied with two Ethernet ports with TX (RJ45) or FX (ﬁ ber optic) connection, and ModBus / TCP or IEC 61850 protocol. The following options are available: • TX + FX ports • TX + TX ports •...
Page 297 Any change of the Ethernet communication parameters become active only after an hw reset RS485 port RS485 communication circuit connections must be made using screened twisted pair cable observ- ing the polarities; screening must only be connected to the end terminating at the RS485 interface circuit pertaining to the monitoring unit.
Page 298 Block circuits Block circuits may be connected to equipment located in a different switchboard: For the aim of reliability, it is recommended to use conductors having a cross sectional thickness of at least 1 mm and to not exceed 5 km in length. For connections that are particularly critical in terms of electro- magnetic pollution, it is recommended to use BFO adaptor modules with ﬁ...
Page 299: Rated In And Ien Settings
RATED I N AND I EN SETTINGS The values of the relay rated current can be set to 1 A or 5 A via ThySetter sw; parameters are avail- able in the Set \ Base menu. LED COMMISSIONING Following indicator LEDs are available on the front panel: •...
Page 300: Programming And Settings
The ThySetter sw is a “browser” of data (setting, measure, etc..); it implements an engine that is afford to rebuild the menu set up and the relationships to data concerning all Thytronic protective relays by means of XML ﬁ les..
Page 301: Mmi (Man Machine Interface)
(Reset) abort the current changes and/or accessing the previous menu Circuit breaker Open command Circuit breaker Close command At power-up, the display shows the text: “THYTRONIC PRO-NVA100X-DM00-a serial number date and time: (01/01/2000 00:00” The ON green Led points out the auxiliary power supply voltage (permanent) and possible diagnostic faults (blink).
Page 302: Setting Modifying (Set)
The full structure of the menu is shown on the following pages. — Setting modifying (SET) All changes in the setting parameters are carried out through MMI only if the Enable setting by MMI parameter is ON. (ENABLE SETTING BY MMI submenu inside the SET menu). To effect a change, having identiﬁ...
Page 303: Test
The end of the LED blinking points out the end of procedure. Answer to the message ENTER: YES to conﬁ rm changes or RESET: NO to abort. The end of the LED blinking points out the end of procedure. — TEST The operational tests with command of the selected output relays may be activated.
Page 304: Enable / Block Changes Via Keyboard - Password
— Enable / block changes via keyboard - Password All parameters (measurements and settings) are available for reading from the operator panel (MMI), while the setting changes are enabled or disabled depending on possible operation modes: • Enable without password (factory setting) •...
Page 305 To modify any parameter the calibration session must be open by means of Start setting command from the menu or directly by clicking on the icon placed on the top bar, the opening of the session setting is highlighted by its Programming state:Open on yellow ﬁ eld on the bottom bar. Operation with Password If the By password mode is selected a new menu password is inserted at the top of the display menu.
Page 306: Menu Tree
MENU TREE THYTRONIC ILmaxL-rms0.000 InL 50.000 Hz PRO-NVA100X-DM00-a ILminL-rms0.000 InL fU12 50.000 Hz DATE: 01/01/2014 ILL-rms 0.000 InL fU23 50.000 Hz TIME: 17:29:59 ULmax 0.000 En fU31 50.000 Hz ULmin 0.000 En IL1L 0.000 InL 0.000 Un IL2L 0.000 InL Enter Password 0.000 Un...
Page 307 StartZ< Trip Z< BLK1 Z< BLK2IN Z< >> StartZ<< Trip Z<< BLK1 Z<< Start U< BLK2IN Z<< Trip U< BLK1 U< >> Start U<< Trip U<< Start U1< BLK1 U<< Trip U1< 27V1 >> BLK1 U1< Start P1> Trip P1> BLK1 P1>...
Page 308 Start U> Trip U> >> BLK1 U> Start U>> Trip U>> PREVIOUS READ MENU’ BLK1 U>> Start UE> Trip UE> BLK1 UE> >> Start UE>> Trip UE>> Start U2> BLK1 UE>> 59V2 >> Trip U2> BLK1 U2> Start 64REF 64REF >>...
Page 309 KC1-1 relay KC1-1 coil KC1-2 relay KC1-2 coil KC1-3 relay KC1-3 coil KC1-4 relay PREVIOUS READ MENU’ RELAYS KC1-4 coil KC1-1...KC1-8 KC1-5 relay KC1-5 coil KC1-6 relay KC1-6 coil KC1-7 relay KC1-7 coil KC1-8 relay KC1-8 coil PARTIAL COUNTERS SEE NEXT PAGES TOTAL COUNTERS SEE NEXT PAGES BreakedBLIN1...
Page 310 ParStZ<cnt ParTrZ<cnt ParBk1Z<cnt ParBk2Z<cnt 21 Counters >> ParStU<cnt ParStZ<<cnt ParTrU<cnt ParTrZ<<cnt ParBk1U<cnt ParBk1Z<<cnt ParStU<<cnt ParBk2Z<<cnt ParRtU<<cnt ParBk1U<<cnt 27 Counters >> ParStU1<cnt ParSt-P1>cnt 27V1 Counters >> ParTrU1<cnt ParTr-P1>cnt ParBk1U1<cnt ParBk1-P1>cnt ParSt-P2>cnt 32P Counters >> ParRt-P2>cnt ParSt-P1<cnt ParBk1-P2>cnt ParTr-P1<cnt ParStI<cnt ParBk1-P1<cnt 37 Counters >>...
Page 311 TotStZ<cnt TotTrZ<cnt TotBk1Z<cnt TotBk2Z<cnt 21 Counters >> TotStZ<<cnt TotStU<cnt TotTrZ<<cnt TotTrU<cnt TotBk1Z<<cnt TotBk1U<cnt TotBk2Z<<cnt TotStU<<cnt TotRtU<<cnt TotBk1U<<cnt 27 Counters >> TotStU1<cnt TotSt-P1>cnt 27V1 Counters >> TotTrU1<cnt TotTr-P1>cnt TotBk1U1<cnt TotBk1-P1>cnt TotSt-P2>cnt 32P Counters >> TotRt-P2>cnt TotSt-P1<cnt TotBk1-P2>cnt TotTr-P1<cnt TotStI<cnt TotBk1-P1<cnt 37 Counters >>...
Page 312 Plant BASE >> ....Reading RELATIVE 6.93 MVA 100 V VntH 8.0 kW 20000 V IntH 100 V A1-A2 NORMAL 0.00 UEnp 20000 V A3-A4 NORMAL GndH A5-A6 NORMAL ConnH InpH 100 A A7-A8 NORMAL VectorGroup TRANSFORMER >> B3-B4 NORMAL InHL VntL 8.0 kW...
Page 313 P1>DIR P Forward P1>RES 0.00 s P1>def enable P1> Element >> P1>def 0.50 Pn FROM PROFILE A MENU’ tP1>def 1.00 s P1>BLK1 P2>DIR P Forward P1>BF P2>RES 0.00 s Relays P1> >> P2>def enable P1>ST-K P2>def 0.50 Pn P1>TR-K tP2>def 1.00 s LEDs P1>...
Page 314 DthIN 0.0 DThetaB PREVIOUS PROFILE A MENU’ DthAL1 Enable DthAL1 0.5 DThetaB DthAL1BLK1 10 min Common >> DthAL1BLK2IN 1.0 T+ PREVIOUS SET MENU’ DthAL1BLK2OUT DthCLP Mode DthAL1BLK4 tDthCLP 0.10 s Relays DthAL1 DthAL1 Element >> DthAL1-K DthAL2 Enable LEDs DthAL1 DthAL2 1.0 DThetaB DthAL1-L DthAL2BLK1...
Page 315 IE1> Enable IE1> Element >> Type PREVIOUS PROFILE A MENU’ IE1>> Enable Characteristic: Type IE1>Curve DEFINITE IE1CLP>> Mode IE1CLP> Mode tE1CLP>> 0.10 s PREVIOUS SET MENU’ tE1CLP> 0.10 s tE1>>RES 0.00 s tE1>RES 0.00 s IE1>>def IE1>def 1.00 IEn1 1.00 IEn1 IE1CLP>>def 2.00IEn1 IE1CLP>...
Page 316 PREVIOUS PROFILE A MENU’ PREVIOUS SET MENU’ CPhi1<DIR CB-55 Enable Common >> CosPhi Lag tARM-CPhi< 1.00 s CPhi1<def enable OFF CPh1< Element >> CPhi1<def 0.90 CPhi2< tCPhi1<def 1.00 s CosPhi Lag CPhi1<BLK1 >> CPhi1<def enable OFF CPhi1<BF CPhi2<def 0.90 Relays CPhi1< tCPhi2<def 1.00 s CPhi1<ST-K...
Page 317 PREVIOUS PROFILE A MENU’ PREVIOUS SET MENU’ Mode67N IED> Enable 3VoType67N Type Insens-Zone Characteristic: Common >> IED>Curve DEFINITE 74VTint67N IEDCLP> Mode 74VText67N tEDCLP> 0.10 s IED> Element >> tED>RES 0.00 s IED>def IED>> Enable 1.00 IEn2 Type UED>def 0.100 UEn Characteristic: ThetaE>def 60 gr...
Page 318 IEDC> Enable PREVIOUS PROFILE A MENU’ Type Mode67NC Characteristic: 3VoType67NC IEDC>Curve DEFINITE PREVIOUS SET MENU’ IEDCCLP> Mode IECType67NC Common >> Insens-Zone tEDCCLP> 0.10 s tEDC>RES 0.00 s M(C) 74VTint67N IEDC>def 74VText67N 1.00 In UEDC>def 0.100 UEn ThetaEC>def 60 gr BetaEC>def 45 gr IEDC>...
Page 319 87T Enable BLK1 87T- 87T- BLK2OUT Common >> BLK4 87T- PREVIOUS PROFILE A MENU’ 50%Id 2nd-REST> 87T(H)- 5thd-REST> 50%Id 87T(L)- t df>> def PREVIOUS SET MENU’ tHREST> 0.10 s Harmonic CROSS H-REST restraint >> ST2nd-REST- ST5th-REST- ST2nd-REST- CT saturation SatDet ST5th-REST- detector >>...
Page 320 74VT Enable U2VT> 0.10 En I2VT> 0.10 In PREVIOUS SET MENU’ UVT< 0.10 En DIVT< 0.10 In IVT< 0.100 In VT SUPERVISION 74VT-AR 74VT >> 74VT-BK-EN tVT-AL 1.0 s 74VT-BLK1 Relays 74VT 74VT-BK-K 74VT-AL-K LEDs 74VT 74VT-BK-L 74VT-AL-L 74CT(H) Enable S(H)<...
Page 321: Maintenance
MAINTENANCE The Pro-NX relays do not require any particular maintenance; all circuits use high quality static components, the subassembly products undergo dynamic checks on their functioning before the ﬁ nal assembling of the complete equipment. The dedicated circuits and the ﬁ rmware for the self-test function continuously check the relay operation;...
Page 322: Appendix
A P P E N D I X APPENDIX A1 - Inverse time curves The operate characteristic of the protective elements is shown in the table: IEEE IEEE IEEE ANSI code Element DEFINITE CUSTOM type A type B type C type B type type...
Page 323: Appendix A1 - Inverse Time Iec Curves
APPENDIX A1 - Inverse time IEC curves — Mathematical formula The mathematical formula, according the IEC 60255-3/BS142 standards is: t = t> t = t> · · α α [(I/I> [(I/I> Where: • t = operate time (in seconds) • = setting time multiplier (in seconds) I>inv •...
Page 324: First Element - Standard Inverse Time Curve (Type A)
— 46M - First element - Standard inverse time curve (type A) t [s] 10000 0.14 t =t > · 0.02 > 1000 > 60 s 10 s 0.5 s 0.2 s 0.1 s 0.02 s 0.01 >inv 7 8 9 10 Note: match of operating and setting time takes place when I >...
Page 325: First Element - Very Inverse Time Curve (Iec 60255-3/Bs142 Type B)
— 46M - First element - Very inverse time curve (IEC 60255-3/BS142 type B) t [s] 10000 13.5 t =t > · > ) -1] 1000 > 60 s 10 s 0.5 s t> 0.1 s 0.2 s t> 0.02 s 0.01 >inv 7 8 9 10...
Page 326: First Element - Extremely Inverse Time Curve (Iec 60255-3/Bs142 Type C)
— 46M - First element - Extremely inverse time curve (IEC 60255-3/BS142 type C) t [s] 100000 t =t> · [(I/I> 10000 1000 > 60 s 10 s > = 0.02 s > = 0.1 s > = 0.2 s >...
Page 327: Phase Overcurrent 50/51 Side H And Side L - Standard Inverse Time Curve (Iec 60255-3/Bs142 Type A)
— Phase overcurrent 50/51 side H and side L - Standard inverse time curve (IEC 60255-3/BS142 type A) t [s] 10000 0.14 t =t > · 0.02 [(I/I > 0.14 t =t > · 0.02 [(I/I > 1000 > 60 s 10 s 0.5 s 0.2 s...
Page 328: Phase Overcurrent 50/51 Side H And Side L - Very Inverse Time Curve (Iec 60255-3/Bs142 Type B)
— Phase overcurrent 50/51 side H and side L - Very inverse time curve (IEC 60255-3/BS142 type B) t [s] 10000 13.5 > t =t · [(I/I > ) -1] 13.5 t =t > · [(I/I > ) -1] 1000 >...
Page 329: Phase Overcurrent 50/51 Side H And Side L - Long Time Inverse Curve (Iec 60255-3/Bs142 Type B)
— Phase overcurrent 50/51 side H and side L - Long Time Inverse curve (IEC 60255-3/BS142 type B) t [s] 10000 t =t > · [(I/I > ) -1] t =t > · [(I/I > ) -1] 1000 > > 60 s 10 s 0.5 s...
Page 330: Phase Overcurrent 50/51 Side H And Side L - Extremely Inverse Time Curve (Iec 60255-3/Bs142 Type C)
— Phase overcurrent 50/51 side H and side L - Extremely inverse time curve (IEC 60255-3/BS142 type C) t [s] 100000 t =t > · [(I/I > t =t > · [(I/I > 10000 1000 > > 60 s 10 s 0.02 s 0.1 s 0.2 s...
Page 331: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 And 50N(Comp)/51N(Comp) - Standard Inverse Time Curve (Iec 60255-3/Bs142 Type A)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Standard inverse time curve (IEC 60255-3/BS142 type A) t [s] 10000 0.14 t =t > · 0.02 > 0.14 t =t > · 0.02 > 0.14 t =t > · 0.02 > 1000 E1>inv E1>inv...
Page 332: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 And 50N(Comp)/51N(Comp) -Very Inverse Time Curve (Iec 60255-3/Bs142 Type B)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) -Very inverse time curve (IEC 60255-3/BS142 type B) t [s] 13.5 10000 t =t > · > ) -1] 13.5 t =t > · > ) -1] 13.5 t =t > · > ) -1] 1000 E1>inv...
Page 333: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 And 50N(Comp)/51N(Comp) - Long Time Inverse Curve (Iec 60255-3/Bs142 Type B)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Long Time Inverse curve (IEC 60255-3/BS142 type B) t [s] 10000 t =t > · > ) -1] t =t > · > ) -1] t =t > · > ) -1] 1000 E1>inv E2>inv...
Page 334: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 And 50N(Comp)/51N(Comp) - Extremely Inverse Time Curve (Iec 60255-3/Bs142 Type C)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Extremely inverse time curve (IEC 60255-3/BS142 type C) t [s] 100000 t =t > · > t =t > · > > t =t · > 10000 1000 E1>inv E2>inv EC>inv 60 s 10 s 0.02 s 0.1 s...
Page 335: Ground Directional Overcurrent - 67N - Standard Inverse Time Curve (Iec 60255-3/Bs142 Type A)
— Ground directional overcurrent - 67N - Standard inverse time curve (IEC 60255-3/BS142 type A) t [s] 10000 0.14 t =t > · 0.02 > 0.14 t =t >> · 0.02 >> 1000 > 60 s >> 60 s > 10 s >>...
Page 336: Ground Directional Overcurrent - 67N - Very Inverse Time Curve (Iec 60255-3/Bs142 Type B)
— Ground directional overcurrent - 67N - Very inverse time curve (IEC 60255-3/BS142 type B) t [s] 10000 13.5 t =t > · > )-1] 13.5 t =t >> · >> )-1] 1000 > 60 s >> 60 s > 10 s >>...
Page 337: Ground Directional Overcurrent - 67N - Extremely Inverse Time Curve (Iec 60255-3/Bs142 Type C)
— Ground directional overcurrent - 67N - Extremely inverse time curve (IEC 60255-3/BS142 type C) t [s] 100000 t =t > · > t =t >> · >> 10000 1000 > 60 s >> 60 s > 10 s > 10 s >...
Page 338: Ground Directional Overcurrent 67N(Comp) - Standard Inverse Time Curve (Iec 60255-3/Bs142 Type A)
— Ground directional overcurrent 67N(Comp) - Standard inverse time curve (IEC 60255-3/BS142 type A) t [s] 10000 0.14 t = t > · 0.02 > 0.14 t = t > · 0.02 > 1000 > 60 s 10 s 0.5 s 0.2 s 0.1 s 0.02 s...
Page 339: Ground Directional Overcurrent 67N(Comp) - Very Inverse Time Curve (Iec 60255-3/Bs142 Type B)
— Ground directional overcurrent 67N(Comp) - Very inverse time curve (IEC 60255-3/BS142 type B) t [s] 10000 13.5 t = t > · > )-1] 13.5 t = t > · > )-1] 1000 > 60 s 10 s 0.5 s 0.1 s 0.2 s 0.02 s...
Page 340: Ground Directional Overcurrent 67N(Comp) - Extremely Inverse Time Curve (Iec 60255-3/Bs142 Type C)
— Ground directional overcurrent 67N(Comp) - Extremely inverse time curve (IEC 60255-3/BS142 type C) t [s] 100000 t = t > · > t = t > · > 10000 1000 > 60 s 10 s 0.02 s 0.1 s 0.2 s 0.5 s >...
Page 341: Appendix A3 - Inverse Time Ansi/Ieee Curves
APPENDIX A3 - Inverse time ANSI/IEEE curves — Mathematical formula The mathematical formula, according the ANSI/IEEE standards is: t = t> t = t> · · α α [(I/I> [(I/I> Where: • t = operate time (in seconds) • = setting time multiplier (in seconds) I>inv •...
Page 342: Negative Sequence Overcurrent 46M - Moderately Inverse Time Curve (Ansi/Ieee Type Mi)
— Negative sequence overcurrent 46M - Moderately inverse time curve (ANSI/IEEE type MI) t [s] 10000 0.01 t =t > + 0.023 · 0.02 > 1000 > 60 s 10 s > = 0.1 s > = 0.5 s > = 0.2 s >...
Page 343: Negative Sequence Overcurrent 46M - Very Inverse Time Curve (Ansi/Ieee Type Vi)
— Negative sequence overcurrent 46M - Very inverse time curve (ANSI/IEEE type VI) t [s] 10000 3.922 t =t > + 0.092 · > 1000 > 60 s 10 s > = 0.02 s > = 0.1 s > = 0.2 s >...
Page 344: Negative Sequence Overcurrent 46M - Extremely Inverse Time Curve (Ansi/Ieee Type Ei)
— Negative sequence overcurrent 46M - Extremely inverse time curve (ANSI/IEEE type EI) t [s] 10000 5.64 t =t > + 0.024 · > 1000 > 60 s > = 0.02 s > = 0.1 s 10 s > = 0.2 s >...
Page 345: Phase Overcurrent 50/51 Side H And Side L - Moderately Inverse Time Curve (Ansi/Ieee Type Mi)
— Phase overcurrent 50/51 side H and side L - Moderately inverse time curve (ANSI/IEEE type MI) t [s] 10000 0.01 t =t > + 0.023 · 0.02 [(I/I > 0.01 t =t > + 0.023 · 0.02 [(I/I > 1000 >...
Page 346: Phase Overcurrent 50/51 Side H And Side L - Very Inverse Time Curve (Ansi/Ieee Type Vi)
— Phase overcurrent 50/51 side H and side L - Very inverse time curve (ANSI/IEEE type VI) t [s] 10000 3.922 t =t > + 0.092 · [(I/I > 3.922 t =t > + 0.092 · [(I/I > 1000 > >...
Page 347: Phase Overcurrent 50/51 Side H And Side L - Extremely Inverse Time Curve (Ansi/Ieee Type Ei)
— Phase overcurrent 50/51 side H and side L - Extremely inverse time curve (ANSI/IEEE type EI) t [s] 10000 5.64 t =t > + 0.024 · [(I/I > 5.64 t =t > + 0.024 · [(I/I > 1000 > >...
Page 348: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 E 50N(Comp)/51N(Comp) - Moderately Inverse Time Curve (Ansi/Ieee Type Mi)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 e 50N(Comp)/51N(Comp) - Moderately inverse time curve (ANSI/IEEE type MI) t [s] 10000 0.01 t =t > + 0.023 · 0.02 > 0.01 t =t > + 0.023 · 0.02 > 0.01 t =t > + 0.023 ·...
Page 349: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 And 50N(Comp)/51N(Comp) - Very Inverse Time Curve (Ansi/Ieee Type Vi)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Very inverse time curve (ANSI/IEEE type VI) t [s] 10000 3.922 t =t > + 0.092 · > 3.922 t =t > + 0.092 · > 3.922 t =t > + 0.092 ·...
Page 350: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 And 50N(Comp)/51N(Comp) - Extremely Inverse Time Curve (Ei)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Extremely inverse time curve (EI) t [s] 10000 5.64 t =t > + 0.024 · > 5.64 t =t > + 0.024 · > 5.64 t =t > + 0.024 · > 1000 E1>inv E2>inv...
Page 351: Directional Ground Overcurrent 67N - Moderately Inverse Time Curve (Ansi/Ieee Type Mi)
— Directional ground overcurrent 67N - Moderately inverse time curve (ANSI/IEEE type MI) t [s] 10000 0.01 t =t > + 0.023 · 0.02 > 1000 > 60 s 10 s > = 0.1 s > = 0.5 s > = 0.2 s >...
Page 352: Directional Ground Overcurrent 67N - Very Inverse Time Curve (Ansi/Ieee Type Vi)
— Directional ground overcurrent 67N - Very inverse time curve (ANSI/IEEE type VI) t [s] 10000 3.922 t =t > + 0.092 · > 1000 > 60 s 10 s > = 0.02 s > = 0.1 s > = 0.2 s >...
Page 353: Directional Ground Overcurrent 67N - Extremely Inverse Time Curve (Ansi/Ieee Type Ei)
— Directional ground overcurrent 67N - Extremely inverse time curve (ANSI/IEEE type EI) t [s] 10000 5.64 t =t > + 0.024 · > 1000 > 60 s > = 0.02 s > = 0.1 s 10 s > = 0.2 s >...
Page 354: Directional Ground Overcurrent 67N(Comp) - Moderately Inverse Time Curve (Ansi/Ieee Type Mi)
— Directional ground overcurrent 67N(Comp) - Moderately inverse time curve (ANSI/IEEE type MI) t [s] 10000 0.01 t =t > + 0.023 · 0.02 > 0.01 t =t > + 0.023 · 0.02 > 1000 > 60 s 10 s 0.1 s 0.02 s 0.2 s...
Page 355: Directional Ground Overcurrent 67N(Comp) - Very Inverse Time Curve (Ansi/Ieee Type Vi)
— Directional ground overcurrent 67N(Comp) - Very inverse time curve (ANSI/IEEE type VI) t [s] 10000 3.922 t =t > + 0.092 · > 3.922 > t =t + 0.092 · > 1000 > 60 s 10 s 0.02 s 0.1 s 0.2 s 0.5 s...
Page 356: Directional Ground Overcurrent 67N(Comp) - Extremely Inverse Time Curve (Ansi/Ieee Type Ei)
— Directional ground overcurrent 67N(Comp) - Extremely inverse time curve (ANSI/IEEE type EI) t [s] 10000 5.64 t =t > + 0.024 · > 5.64 t =t > + 0.024 · > 1000 > 60 s 0.02 s 10 s 0.1 s 0.2 s 0.5 s...
Page 357: Appendix A3 - Inverse Time - Rectifier, I2T And Em Curves
APPENDIX A3 - Inverse time - RECTIFIER, I2t and EM curves — Mathematical formula The mathematical formula for RECTIFIER, I-squared-t (I t) and Electromechanical curves (EM) is: t = t> t = t> · · α α A·(I/I> A·(I/I> Where: •...
Page 358: Phase Overcurrent 50/51 Side H And Side L - Rectifier Curves
— Phase overcurrent 50/51 side H and side L - Rectifier curves t [s] 1000 000 2351 t =t > · [(I/I > 2351 t =t > · [(I/I > 100 000 10 000 > > 1000 60 s 10 s 0.5 s 0.1 s 0.02 s...
Page 359: Negative Sequence Overcurrent 46M - I T Inverse Curves (I2T=K)
— Negative sequence overcurrent 46M - I t inverse curves (I2t=K) t [s] 10000 · > > 1000 > = 1 s > = 0.5 s > = 0.2 s > = 0.02 s > = 0.1 s 0.01 Note: match of operating and setting time takes place when I >...
Page 360: Phase Overcurrent 50/51 Side H And Side L - I 2 T Inverse Curves (I2T=K)
— Phase overcurrent 50/51 side H and side L - I t inverse curves (I2t=K) t [s] 10000 t =t > · [(I/I > t =t > · [(I/I > t =t >> · [(I/I >> 1000 t =t >> ·...
Page 361: Phase Overcurrent 50/51 Side H And Side L - I 2 T Inverse Curves (I2T=K)
— Phase overcurrent 50/51 side H and side L - I t inverse curves (I2t=K) t [s] 10000 t =t > · > t =t >> · >> 1000 > = 1 s > = 60 s >> = 1 s >>...
Page 362: Negative Sequence Overcurrent 46M - Electromechanical Inverse Curves (Em)
— Negative sequence overcurrent 46M - Electromechanical inverse curves (EM) t [s] 10000 0.28 t =t > · [-0.236 > +0.339] · 1000 > = 0.02 s > = 0.1 s 0.01 Note: match of operating and setting time takes place when I /I>...
Page 363: Phase Overcurrent 50/51 Side H And Side L - Electromechanical Inverse Curves (Em)
— Phase overcurrent 50/51 side H and side L - Electromechanical inverse curves (EM) t [s] 10000 0.28 t =t > · [-0.236 (I/I > +0.339] · 0.28 t =t > · [-0.236 (I/I > +0.339] · 1000 >> >> 0.02 s 0.1 s 0.01...
Page 364: Residual Overcurrent 50N.1/51N.1, 50N.2/51N.2 And 50N(Comp)/51N(Comp) - Electromechanical Inverse Curves (Em)
— Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Electromechanical inverse curves (EM) t [s] 10000 1000 E>inv EC>inv 0.02 s 0.1 s 0.01 >inv Note: match of operating and setting time takes place when I > or I > F_51N-EM-Char.ai NVA100X-D - Manual - 02 - 2016 APPENDIX...
Page 365: Ground Directional Overcurrent 67N - Electromechanical Inverse Curves (Em)
— Ground directional overcurrent 67N - Electromechanical inverse curves (EM) t [s] 10000 0.28 t =t > · [-0.236 > + 0.339] · 0.28 t =t >> · [-0.236 >> + 0.339] · 1000 > >> 60 s 10 s 0.5 s 0.2 s 0.1 s...
Page 366: Ground Directional Overcurrent 67N(Comp) - Electromechanical Inverse Curves (Em)
— Ground directional overcurrent 67N(Comp) - Electromechanical inverse curves (EM) t [s] 10000 0.28 t =t > · [-0.236 > + 0.339] · 0.28 t =t > · [-0.236 > + 0.339] · 0.28 t =t >> · [-0.236 >> + 0.339] ·...
Page 367: Appendix B1 - I/O Diagram
APPENDIX B1 - I/O Diagram NVA100X-D 4-20 mA OC1E L1-L KC1-1 # / ∩ Mis.1 STANDARD L2-L KC1-2 L3-L OPTIONS # / ∩ Mis.2 KC1-3 ≅ KC1-4 # / ∩ Mis.3 KC1-5 L1-H # / ∩ Mis.4 KC1-6 L2-H KC1-7 L3-H # / ∩...
Page 368: Appendix B2 - Interfaces
APPENDIX B2 - Interfaces Supervision unit Note [1] two redundant ports with hw-sw switching selectable from TX (RJ45) + FX (optical ﬁber), TX + TX or FX + FX A version with two simultaneously active Ethernet ports with RSTP protocol is available FRONT PANEL Interfaces.ai NVA100X-D - Manual - 02 - 2016...
Page 369: Appendix B3 - Protective Elements
APPENDIX B3 - Protective elements - Protective & control elements NVA100X-D Underimpedance L1-H L2-H L3-H Thermal with Pt100 probes 50N.2/51N.2 Undervoltage 74CT 27V1 Positive sequence undervoltage 50/51 Directional active overpower Undercurrent Directional active underpower Loss of ﬁeld 46M-46G Negative sequence overcurrent Phase reversal 49MG Thermal image...
Page 370: Appendix B4 - Connection Diagrams
APPENDIX B4 - Connection diagrams Note: All diagram must be considered just as example; they cannot be comprehensive for real applications. For all diagrams the output contacts are shown in de-energized state for standard reference. NVA100X-D L1 L2 L3 74TCS 74CT 50N.1/51N.2 74VT...
Page 371 L1 L2 L3 NVA100X-D 74TCS 74CT 85NHIZ 50N.2/51N.2 27V1 (*) Antiferrorisonance 59V2 67N(Comp) 50/51 74VT 51LR 50N/51N(Comp) 74CT Note *: when 87NHIZ is enabled, the 50N/51N/67N functions can not be used with residual current (IE) measured directly NOTE - Incoming currents to the protected transformer must match to the the reference current inputs of the relay, with current direction leaving the protected transformer must match current output from the current inputs of the relay.
Page 372 L1 L2 L3 NVA100X-D 74TCS 74CT 50N.1/51N.2 74VT 27V1 67N(Comp) (*) Antiferrorisonance 59V2 50N/51N(Comp) 50/51 74CT 87NHIZ 64REF 50N.1/51N.1 Note *: when 87NHIZ is enabled, the 50N/51N/67N functions can not be used with residual current (IE) measured directly NOTE - To current with incoming direction in the protected component must match incoming current in the reference terminals of of the relay current inputs , while to current having a outgoing direction from the protected component must match output current in the reference terminals of the current inputs of the relay.
Page 373 NVA100X-D L1 L2 L3 74TCS 74CT 50/51 50N.2/51N.2 50N/51N(Comp) 87NHIZ.2 50N.1/51N.1 64REF 50N/51N(Comp) 87NHIZ.1 27V1 59V2 (*) Antiferrorisonance 50/51 74CT 74VT Note *: when 87NHIZ is enabled, the 50N/51N/67N functions can not be used with residual current (IE) measured directly NOTE - Incoming currents to the protected transformer must match to the the reference current inputs of the relay, with current direction leaving the protected transformer must match current output from the current inputs of the relay.
Page 374: Appendix C1 - Pro-Nx Dimensions
APPENDIX C1 - Pro-NX Dimensions FRONT VIEW SIDE VIEW REAR VIEW FLUSH MOUNTING CUTOUT ±0.3 94.5 100V 100V IN2D IN1C OC2F OC1E 110-230 Vac/dc NVA100-DX#MM00 N.4 holes ø 4.2 N.4 holes ø 4.2 RACK MOUNTING 482.6 NVA100X-D - Manual - 02 - 2016 APPENDIX...
Page 375: Appendix E - Revisions History
8.10 APPENDIX E - Revisions history Firmware Firmware Documentation Communication Date Description Release Release 1.00 1.00 NVA100X-D-Manual-01-2014 ThySetter 3.6.9 First edition 1.00 1.00 NVA100X-D-Manual-03-2014 ThySetter 3.6.9 04-2014 24 element and PLC removed 1.10 1.20 NVA100X-D-Manual-04-2014 ThySetter 3.6.9 06-2014 Correction on par. 4 (Convenctions), description of 50N/51N(Comp) element , EC conformity, details 1.10 1.40...
Page 376: Appendix F - Ec Declaration Of Conformity
8.11 APPENDIX F - EC Declaration of conformity Manufacturer: THYTRONIC S.p.A. Address: Piazza Mistral 7 - 20139 MILANO The undersigned manufacturer herewith declares that the product Protection relay - NVA100X-Dxxx is in conformity with the previsions of the following EC directives (including all applicable amendments) when installed in accordance with the installation instructions: Reference n°...

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