I N T R O D U C T I O N — Scope and liability This document describes the functions, the technical data of NV021 devices; instructions for mount- ing, setting and commissioning are included. This manual has been checked out, however, deviations from the description cannot be completely ruled out, so that no liability in a legal sense for correctness and completeness of the information or from any damage that might result from its use is formally disclaimed.
Auxiliary contact in the breaker that is in the opposite position as the breaker (52b open = CB closed) K1...K6...K10 Output relays Note 1 The graphic interface and the operation of the ThySetter software are described in the relative chapters NV021 - Manual - 08 - 2012 INTRODUCTION...
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A text fi le that lists actions that have occurred (ThySetter). J2SE Java Platform Standard Edition Subnet Mask (Ethernet nomenclature) Software Firmware Upgrade Firmware upgrade eXtensible Markup Language IEC 61850 Substation IEC protocol NV021 - Manual - 08 - 2012 INTRODUCTION...
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EXOR logic gate INPUT ON delay timer with reset ( delay) OUTPUT RESET RESET INPUT ON delay timer without reset ( delay) OUTPUT INPUT OFF delay timer (dropout) without reset ( delay) OUTPUT Symbols-en.ai NV021 - Manual - 08 - 2012 INTRODUCTION...
G E N E R A L — Preface The relay type NV021 can be typically used in HV, MV and LV distribution systems, on transformers or for electrical machines. It can be used for system decoupling, load shedding and loss of main (islanding) protection.
• The event recorder (SER) runs continuously capturing in circular mode the last three hundred events upon trigger of binary input/output. • Digital fault recorder (DFR) in COMTRADE format (oscillography) — Photo NV021 - Manual - 08 - 2012 GENERAL...
Note 2 The mathematical formula for INVERSE curve is: t= (0.75 ∙ t = operating time (in seconds) < = operating time setting (in seconds) U = input voltage U< = threshold setting NV021 - Manual - 08 - 2012 TECHNICAL DATA...
- with initial value 0.9 Uavg>def (0.9x1.1 = 0.99 Un) and fi nal value 1.1 Uavg>def (1.1x1.1 = 1.21 Un) the pickup time is 285 s Note 4 Since the aggregate value is updated every 3 s, times are only meaningful in multiples of 3 s NV021 - Manual - 08 - 2012 TECHNICAL DATA...
1.5% ± 10 ms Operate time accuracy Note 1: 1.5% ± 15 ms with operate time setting = 0.05 s Note 2: 1.5% ± 15 ms with operate time setting = 0.05 s NV021 - Manual - 08 - 2012 TECHNICAL DATA...
3% ± 20 ms — Breaker failure - BF BF Time delay (t 0.06...10.00 s (step 0.01 s) Dropout ratio 0.95...0.98 Dropout time ≤ 0.05 s Operate time accuracy 5% or ± 10 ms NV021 - Manual - 08 - 2012 TECHNICAL DATA...
Note 1 If the measured frequency is out of the locking range, the system lock on to the rated frequency (50 or 60 Hz) Note 2 For the DFR function a licence is required; call Thytronic for purchasing. Note 3 The measures of temperature are available only when the MPT module on Thybus is enabled (eigth Pt100 inputs) Note 4 Output relay K7...K10 and binary input IN3...IN42 states are available only when the concerning I/O circuits are implemented (MRI and MID16...
Temperature PT3 Temperature PT4 Temperature PT5 Temperature PT6 Temperature PT7 Temperature PT8 Note 1 The measures of temperature are available only when the MPT module on Thybus is enabled (eight Pt100 inputs) NV021 - Manual - 08 - 2012 TECHNICAL DATA...
An eight keys 8 keyboard, • a backlight LCD display, • Eight signalling LEDs, The removable plug allows separation of the MMI module for free access to the CPU board when DIP-switch setting is required. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Xml fi les used for communication. The automatic code generation criteria ensures the quality of the result in terms of the reusability, verifi ability and maintainability of the software life cycle. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Samples are processed by means DFT (Discrete Fourier Transform) algorithm and the phase and amplitude of fundamental are computed: • Input voltages U ACQUISITION ACQUISITION ≈ ≈ UL 1 -e n . a i UL 1 -e n . a i NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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U has a transitional trend with square-law as shown in the following fi gure. Ten minutes RMS voltage (59Uavg) Ten minutes RMS voltage (59Uavg) Nota 1 Calcolate sulle tre tensioni concatenate NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Direc t se quence cy cli c order Direc t se quence cy cli c order Inverse sequence cycl ic or de r Inverse sequence cycl ic or de r fasori1.ai fasori1.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Fault 19 OSCILLOGRAPHY g g g g g g g g Record 1 g g g g g g g g Record 2 g g g g g g g g Record ... NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Reset counters Reset CB Monitor (clear CB monitoring data) 52a (CB auxiliary contact) 52b (CB auxiliary contact) Open CB Close CB Remote trip 74VT ext. (74VT from external protection relays f<-f> Control NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Note 1 To enable the profi le switching the “Input-selected” parameter must be set inside the “Profi le selection” submenu. If multiple setting groups are not required, Group A is the default selection NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Note 2 The activation of one binary input produces indiscriminately a block of all protective elements programmed for being blocked from Block1 Note 3 The reset of the total counters is practicable by means ThySetter command with Session Level 1 (available with password) NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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INx t INx t INx t INx t n.o. n.o. Binary input INx Binary input INx Restrictive threshold enabling from binary input Restrictive threshold enabling from binary input Consenso 81O-81U.ai Consenso 81O-81U.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
- Energized operating mode, - No-latched , in order that it stays ON for normal conditions and the other way round it goes OFF if any fault is detected and/or the auxiliary supply turns OFF. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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BF Trip relays (BF-TR-K) Number of CB trips diagnostic relays (N.Open-K) Circuit breaker opening time diagnostic relays (tbreak-K) Open CB command relays (CBopen-K) Close CB command relays (CBclose-K) Remote tripping relays (RemTrip-K) NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Note 1 The START and the TRIP LED are user assignable to any function; other than starting and tripping information can be assigned to them too, just the same for L1...L5 Note 2 All LEDs are unassigned in the default setting. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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74TCS Trip (74TCS-TR-L) BF Start (BF-ST-L) BF Trip (BF-TR-L) Number of CB trips diagnostic (N.Open-L) Circuit breaker opening time diagnostic (tbreak-L) Open CB command (CBopen-L) Close CB command (CBclose-L) Remote tripping (RemTrip-L) NV021 - Manual - 08 - 2012 CHARACTERISTICS...
— Communication interfaces Several communication ports are provided: • RS232 port on the front side of the NV021 device for local communication (ThySetter). • RS485 port on the rear side of the NV021 device for bus communication. • Ethernet port on the rear side of the NV021 device for bus communication.
The relay nominal voltage may be set to: U = 400 V Example 2 = 230 V = 230 V NV021 NV021 The relay nominal voltage may be set to: U = 230 V NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Measures may be displayed according the following operating modes: - With RELATIVE setting all measures are related to the nominal value, - With PRIMARY setting all measures are related to the primary value. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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0 . 2 5 s 0 . 2 5 s 0 . 2 5 s Pt1...8 update Pt1...8 update t-refresh-F26.ai t-refresh-F26.ai Note 1 The 26 menu is available when the MPT module is enabled NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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BF Enable (ON≡Enable) Th>xBF Logic diagram for thermal protection with RTD thermometric probes (26) Fun-F26.ai Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
U <and / or U << element (with manual or automatic reset, normally energized or de-ener- gized) are forced to rest state, the display shows the message “Disabled 27” and all LEDs blink until the end of the command. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Logic diagram concerning the first threshold (U<) of the undervoltage element - 27 Fun-F27_S1.ai Fun-F27_S1.ai Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Set \ Inputs \ Binary input IN1(x) menus (IN1 or INx matching). Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR- ING section. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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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 NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Note 2 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu. Note 3 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR- ING section. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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INx t INx t Block1 n.o. Binary input INx Trip U1< towards BF logic & U1< BF BF Enable (ON≡Enable) U1<BF Logic diagram concerning the positive sequence undervoltage element - 27V1 Fun-F27V1_S1.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
All the parameters can be set separately for Profi le A and Profi le B (Set \ Profi le A(or B) \ Overvolt- age - 59 \ U> Element (U>> Element) \ Setpoints menus). Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Logic diagram concerning the first threshold (U>) of the overvoltage element - 59 Fun-F59_S1.ai Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR- ING section. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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INx t Block1 n.o. Binary input INx Trip U>> towards BF logic U>> BF & BF Enable (ON≡Enable) U>>BF Logic diagram concerning the second threshold (U>>) of the overvoltage element - 59 Fun-F59_S2.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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U /U >inv 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 NV021 - Manual - 08 - 2012 CHARACTERISTICS...
- with initial value 0 and fi nal value 1.1 Uavg> def (1.1x1.1 = 1.21 Un) the pickup time is 498 s - with initial value 0.9 Uavg>def (0.9x1.1 = 0.99 Un) and fi nal value 1.1 Uavg>def (1.1x1.1 = 1.21 Un) the pickup time is 285 s NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Set \ Inputs \ Binary input IN1(x) menus (IN1 or INx matching). All the parameters can be set separately for Profi le A and Profi le B. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Note 2 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu. NV021 - Manual - 08 - 2012 Note 3 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR- CHARACTERISTICS ING section.
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Block1 n.o. Binary input INx Trip U2> towards BF logic & U2> BF BF Enable (ON≡Enable) U1<BF Logic diagram concerning the threshold (U2>) of the negative sequence overvoltage element - 59V2 Fun-F59V2_S1.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
The parameters are available inside the Set \ Profi le A(or B) \ Overfrequency - 81O \ f> Element (f>> Element) \ Setpoints menus. Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Logic diagram concerning the second threshold (f>>) of the overfrequency element - 81O Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR- ING section. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Note 1 For sensors inputs versions the frequency is measured on the phase voltages ( ), while for versions with inductive VTs inputs the frequency is measured on-phase-to-phase voltages ( On the diagrams are the input phase voltages or phase-to-phase according to the corresponding versions NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Logic diagram concerning the first threshold (f<) of the underfrequency element - 81U Fun-F81U_S1.ai Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR- ING section. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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INx t Block1 n.o. Binary input INx f<<< Trip towards BF logic & f<<< BF BF Enable (ON≡Enable) f<<<BF Logic diagram concerning the third threshold (f<<<) of the underfrequency element - 81U Fun-F81U_S3.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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INx t Block1 n.o. Binary input INx f<<<< Trip towards BF logic & f<<<< BF BF Enable (ON≡Enable) f<<<<BF Logic diagram concerning the fourth threshold (f<<<<) of the underfrequency element - 81U Fun-F81U_S4.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
ON = Fault (Start 59N and/or 27V1 and/or 59V2 element) ON = Fault (Start 59N and/or 27V1 and/or 59V2 element) Operating logic for thresholds activation with voltmetric control Operating logic for thresholds activation with voltmetric control NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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(see following page) Binary input connected to remote trip external contact Remo t e t r ip Remote trip (Goose IEC61850) Remo t e t r ip Logic diagram concerning the NV021 voltage control NV021 - Manual - 08 - 2012 CHARACTERISTICS...
\ df>>> Element, (df>>>> Element) \ Setpoints menus. Note 1 For one-phase grids the frequency is measured on the phase voltage , while for three-phase grids the frequency is measured on-phase-to- phase voltage NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Logic diagram concerning the frequency rate of change elements - 81R all-F81R.ai all-F81R.ai Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR- ING section. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Binary input INx f<< Trip df>> BF towards BF logic & BF Enable (ON≡Enable) df>> BF Logic diagram concerning the second threshold (df>>) of the frequency rate of change element - 81R Fun-F81R_S2.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Binary input INx df>>>> Trip towards BF logic & f<<<< BF BF Enable (ON≡Enable) df>>>>BF Logic diagram concerning the fourth threshold (df>>>>) of the frequency rate of change element - 81R Fun-F81R_S4.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
(52nd or 52b ) may suffi ce Note 2 The exhaustive treatment of the logic block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITORING section NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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BLK1 BF & Block1 Logic INx t INx t n.c. INx t Block1 input (ON≡Block) INx t Block1 n.o. Binary input INx (x=1...8-16) Logic diagram concerning the breaker failure element -BF Fun-BF_Pro-n.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Note 1 In the following treatment, the logical block is defi ned as “Logical block” or “Block1” Note 2 The Block 1 signal forces a timer reset NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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81R element df>>BLK1 81R element df>>>BLK1 81R element df>>>>BLK1 81R element 74TCS-BLK1 74TCS element BF-BLK1 BF element Block1 info Block1 (internal state) Logic diagram concerning the logic block element -Block1 Block1_L.ai NV021 - Manual - 08 - 2012 CHARACTERISTICS...
, while for versions with inputs from inductive VTs the frequency is measured on line-to-line voltages Inside the diagrams are the input phase-to neutral or phase-to-phase voltages according to the corresponding versions NV021 - Manual - 08 - 2012 CHARACTERISTICS...
(Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITORING section Note 2 Following assumption are considered for the framework: Logic: ON, Timers t and t reset to zero OFF: TRIP contact of the protection: DE-energized, No latched NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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Outputs are reset to zero after 6 s from the TRIP contact open. Note 1 The trip contact (TRIP) of the protection relays must be set with automatic reset (No-latched operating mode). NV021 - Manual - 08 - 2012 CHARACTERISTICS...
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) / 2 = (103.7 + 30425) / 2 = 15264 Ω ~ 15 k Ω (Power dissipated by the R resistor) = U /R = 110 / 15000 = 0.8 W NV021 - Manual - 08 - 2012 CHARACTERISTICS...
(tbreak>) is exceeded, an output relay and/or LED can be activated. The four criteria can be contemporaneously or separately set. All the named parameters are available inside the Set\Circuit Breaker supervision\CB Diagnostic menu. NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Note 1 The 26 menu is available when the MPT module is enabled Nota 2 The output relay K7...K10 and binary input IN3...IN42 states is meaningful when the I/O circuits are present (MRI and MID16 modules) NV021 - Manual - 08 - 2012 CHARACTERISTICS...
Note 2 Data are stored in non volatile memory; they are held in spite of power down Note 3 Counter is updated at any new record; it may be cleared by means ThySetter NV021 - Manual - 08 - 2012 MEASURES, LOGIC STATES AND COUNTERS...
Note 2 Counter is updated at any new record; it may be cleared by means ThySetter Note 3 Data are stored into non volatile memory FLASH, they are preserved also when power goes down NV021 - Manual - 08 - 2012 MEASURES, LOGIC STATES AND COUNTERS...
N.4 holes ø 3,5 N.4 holes ø 3,5 Flush-mount.ai Flush-mount.ai Flush mounting Flush mounting Separation of fixed and removable parts is NOT required Separation of fixed and removable parts is NOT required NOTE NOTE NV021 - Manual - 08 - 2012 INSTALLATION...
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128.5 212.5 212.5 START START TRIP TRIP Separate operator panel Separate operator panel Separate-mount.ai Separate-mount.ai A standard direct shielded cable with RJ45 connectors must be used for connections. Separate operator panel Separate-mount1.ai NV021 - Manual - 08 - 2012 INSTALLATION...
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Rack mounting Rack mounting Rack-mount.ai Rack-mount.ai To allow opening of the keyboard door a one unit space must be provided when several rack are overlapping mounted. Rack-mount1.ai Rack-mount1.ai Rack mounting Rack mounting NV021 - Manual - 08 - 2012 INSTALLATION...
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. A protective ground connection is required, which must be connected to the suitable screw with a separate lead of at least 2.5 mm...
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(about current, nominal voltage, make and break current , etc..). load (about current, nominal voltage, make and break current , etc..). For all diagrams the output contacts are shown in de-energized state for standard reference. NV021 - Manual - 08 - 2012 INSTALLATION...
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Set to OFF the Autonegotiation parameter of NV10 device (Autonegotiation parameter inside • Communication \ Ethernet submenu). For security reasons, a change of the Ethernet communication parameters become active only after an hw reset. NV021 - Manual - 08 - 2012 INSTALLATION...
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Termination resistors allow adjusting the impedance of the line, reducing the infl uence of the induc- tive components of the same, which might compromise good communication. PRO-N PRO-N ≅ SUPERVISION UNIT RS485 BLOUT- BLOUT+ 120 Ω FRONT PANEL RS485-wiring.ai NV021 - Manual - 08 - 2012 INSTALLATION...
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One MRI module, two MID16 modules, one MPT module, one MCI module and one MMI module (separate operator panel) can be connect at the same time to the Thybus port (maximum expansion). NV021 - Manual - 08 - 2012 INSTALLATION...
The auxiliary voltage in the panel falls within the operative range of Pro_N relays. • The relay rated voltage (100 V or 400 V) corresponds to the Pro_N input voltages. • All wirings are correct. • All screws are tightly screwed. NV021 - Manual - 08 - 2012 INSTALLATION...
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.
“FAULT RECORDING >>” “EVENTS RECORDING >>” The complete menu is shown in the following pages. Note 1 Setting changes are enabled when the La mEnabling setting by MMI parameter is set NV021 - Manual - 08 - 2012 SETTING AND COMMISSIONING...
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Press the (Enter) button for a few seconds; new message appears: “Confi rm settings?” • Answer to the message ENTER: YES to confi rm changes or RESET: NO to abort. NV021 - Manual - 08 - 2012 SETTING AND COMMISSIONING...
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The committed output relays must be enabled inside the Circuit Breaker supervision \ LEDs-relays allocation menu. Note 1 Instantly all the relays are switched in rest state, including relays programmed as “normally energized” NV021 - Manual - 08 - 2012 SETTING AND COMMISSIONING...
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Operating phase: Binary IN: Fault 299 Date: Relay OUT: Time: Event0 (last): ..: Eventxx: IN1 on ..: Settings Date Date EVENTS RECORDING Relay OUT: Time Time PROCEED SET MENU’ NV10P_menu2.ai NV021 - Manual - 08 - 2012 SETTING AND COMMISSIONING...
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Uavg>TR-K U2>def 0.1 Un LEDs Uavg> tU2>def Uavg>ST-L U2>BLK1 Uavg>TR-L U2>BF Relays U2> 59V2 U2> Element U2>ST-K U2>TR-K LEDs U2> U2>ST-L U2>TR-L PROCEED SET MENU’ PROCEED PROFILE A MENU’ NV10P_menuset1.ai NV021 - Manual - 08 - 2012 SETTING AND COMMISSIONING...
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Test state: NTP Synch. Stop test? >> Start test? >> Test K1 >> TEST Test K2 >> Test K3 >> Test K4 >> Test K5 >> Test K6 >> NV10P_menuset2.ai NV021 - Manual - 08 - 2012 SETTING AND COMMISSIONING...
For all diagrams the output contacts are shown in de-energized state for standard reference. L1 L2 L3 NV021 One-phase grids TRIP - NV021 SELF (diagnostic) Trip NV021 (K1) Breaker failure (BF) FRONT PANEL BF (K2) ≅ NV021-sch.ai NV021 - Manual - 08 - 2012 APPENDIX...
Piazza Mistral 7 - 20139 MILANO The undersigned manufacturer herewith declares that the product Protection relay - type NV021 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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