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Ice IMM 8001 User Manual

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Projet : IMM 8000
Référence secrétariat : DDP/GM/MC/452-00
Diffusion :
Restreinte
du rédacteur
Traduction de la version Française
Du MU307-1 ind.C
Ind.
Date
A
07.02.00
Edition de la version anglaise du MU307-1 ind B
B
06.08.02
Mise à jour avec le MU307-1 ind C
Référence : MU307-1-GB-A.doc
IMM 8001/8002
USER'S GUIDE
Nombre de pages (y compris celle-ci) : 97
Libre
x
Etat :
MISES A JOUR
Nom et Visa
du vérificateur
G. MANCIER
Nature des mises à jour
Projet
Validé
de l'approbateur
F. JAMINET
Réf. Doc C/n° 2012-1
x
Rédac.
-
EN

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Summary of Contents for Ice IMM 8001

  • Page 1 Projet : IMM 8000 Référence : MU307-1-GB-A.doc IMM 8001/8002 USER’S GUIDE Référence secrétariat : DDP/GM/MC/452-00 Nombre de pages (y compris celle-ci) : 97 Diffusion : Restreinte Libre Etat : Projet Validé MISES A JOUR Nom et Visa du rédacteur du vérificateur de l'approbateur Traduction de la version Française...
  • Page 2 PROTECTIONS & CONTRÔLE C O M M ANDE IMM 8001 / 8002 USER'S GUIDE Protection & Contrôle Commande 11, rue Marcel Sembat 94 140 Alfortville Tél : (33) (0)1-41-79-76-00 Fax : (33) (0)1-41-79-76-01...

  • Page 3: Table Of Contents

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE CONTENTS 1 - INTRODUCTION..................................3 1.1. 8001 8002 ....................3 RESENTATION OF IMM AND IMM RELAYS 1.1.1. Protection function table ............................4 1.1.2. Table of measurements performed ......................5 1.1.3. Table of digital inputs ..........................6 1.1.4.
  • Page 4 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.8. ROTOR STALLING PROTECTION DURING START [51LR] ................59 5.9. PROTECTION AGAINST CURRENT UNBALANCES (PHASE LOSS) [46] ............ 62 5.10.........................SHORT-CIRCUIT PROTECTION [50] 67 5.11........................EARTH FAULT PROTECTION [51N] 70 5.12. MINIMUM LOAD PROTECTION (PUMP UNPRIMING) [37 P/I]............... 74 5.13.

  • Page 5: Introduction

    AND IMM RELAYS The IMM 8001 and 8002 relays are digital relays designed to protect medium-voltage motors as well as high-power low-voltage motors. They combine all the functions required to provide a sophisticated protection of all types of AC motors in a single compact case.

  • Page 6: Protection Function Table

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 1.1.1. Protection function table Restart Trip Alarm ANSI CODE PROTECTION inhibit [49] Thermal overload trip Ith> [49] Thermal overload alarm Ith> Al [26] * Level 1: temperature rise Sxθ1 (Nota 1)

  • Page 7: Table Of Measurements Performed

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 1.1.2. Table of measurements performed (classification according to local display items) MEASUREMENTS UNIT DESIGNATION Measurement item Current Line current I1 and I3 Line current I1 and I3 (in In machine)

  • Page 8: Table Of Digital Inputs

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 1.1.3. Table of digital inputs DIGITAL INPUT STATUS FUNCTION EL 1 Device interlock EL 2 ON/OFF External trip (relaying with T P A or B) EL 3 Contact for re-acceleration...

  • Page 9: Purchase Order References

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 1.2. P URCHASE RDER REFERENCES Choice of relay : • IMM 8001 without RTD diagram 38A5 • IMM 8002 with 3 RTDs diagram 38A6 Choice of connection diagram : • 3 CTs connection (code Aa), or ring CT connection (code Ab) •...

  • Page 10: Mechanical Installation

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 2 – MECHANICAL INSTALLATION 2.1. INTRODUCTION ♦ The relay includes : - a basic metal case comprising the internal step-down transformers and the power terminal block (current and voltage inputs + case earth).

  • Page 11: Overall Dimensions And Mechanical Cut-Out Drawing

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 2.2. OVERALL DIMENSIONS AND MECHANICAL CUT-OUT DRAWING ____________________________________________________________________________________________ IMU307-1 GB Ind. B...

  • Page 12: Electrical Installation

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 3 – ELECTRICAL INSTALLATION 3.1. GENERALITY From the connection diagrams below and the communication network diagram, as required, make the different connections using the physical identifications of the terminal blocks given in paragraph 3.3.
  • Page 13 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE IMM 8002 ____________________________________________________________________________________________ IMU307-1 GB Ind. B...

  • Page 14: Terminal Block Description

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 3.3. TERMINAL BLOCK DESCRIPTION Power terminal block Rear view Voltage phase 3 Voltage phase 1 Earth fault hot point IN = 5A (residual connection) Earth fault hot point IN = 1A (ring CT or residual connection)
  • Page 15 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Input/output terminal blocks A and B + communication terminal block X Rear view contact EL1 (DI) Common contact a 1 EL2 (DI) contact a 1 EL3 (DI) contact b 1...

  • Page 16: Auxiliary Voltage Connection

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 3.4. AUXILIARY VOLTAGE CONNECTION Recommendations : Before making the connection, it is important to verify that the value of the auxiliary voltage, considering possible variations, is within the range indicated on the front panel label : •...
  • Page 17 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE If the definite time operating level Io>> is in service, the use of a steadying resistor as defined below is recommended. The inaccuracy of the CTs measurement during the starting or re-acceleration periods may result in unexpected protection trips.
  • Page 18 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE When earth fault detection is done with this type of ring CT, the rated value INo is the nominal value of the ring CT, i.e. 100 A, and the maximum sensitivity of the earth fault protection is 1 A.

  • Page 19: Measurement Voltage Connection

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 3.6. MEASUREMENT VOLTAGE CONNECTION The primary nominal value of the PT will be between 380V and 100 000V (setting range). The secondary nominal value of the PT will be 100 - 110 – 120, or 240 V. The relay handles these 4 voltages as chosen (parameter assignment in the item "Rated Values").

  • Page 20: Relay Output Connection

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 3.8. RELAY OUTPUT CONNECTION The IMM 8000 relay has 4 output units (T, P, A, and B) fitted with an inverter + 1 Watchdog (W). All the output units have the same contact ratings (see technical characteristics), and all the protection functions can be routed to each unit T, P, A, or B, irrespective of the unit.

  • Page 21: External Communication Connection (Db9 Rear Socket)

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 3.10 EXTERNAL COMMUNICATION CONNECTION (DB9 REAR SOCKET) 3.10.1. 0-20 mA current loop configuration In this connection mode, the relay is inserted in a current loop. The current loop/RS 232 interface can be provided by a BAI 7001 relay provided for this purpose.

  • Page 22: Communication Connection (Db9 Front Socket)

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Loop diagram IMM N° 1 Communication RS232 / RS485 socket DB9 at rear of relay converter 150 Ω Ω IMM N° X Communication socket DB9 at rear of relay Ω...

  • Page 23: Operator Dialogue

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 4 – OPERATOR DIALOGUE 4.1. FRONT PANEL Alphanumeric display LCD 2 x 16 characters 7 function 4 navigation keys for man machine interface Green LED, "parameter setting" mode Red LED, CLEAR key "watchdog"...

  • Page 24: Local Operator Dialogue

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 4.2. LOCAL OPERATOR DIALOGUE The various informations can be read and the relay parameters set with the 8-key keyboard and display on the front panel. For easier parameter setting, the PROSETTING software provides electrotechnical and practical help with regard to protection data generation.

  • Page 25: Measurements - Present Status - Statistics

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE The 3 chapters Measurements, Present Status and "Statistics" are read only chapters The 2 chapters Parameters Table 1 and Parameters Table 2 contain all the protection parameters. The chapter Rated Values contains all the general protection parameters.
  • Page 26 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE To change parameter settings, go to the parameter setting mode by pressing the PARAM key. - If there is an active password : see chapter 4.2.7. - If there is no active password, the relay will directly be in the parameter setting mode, and the "Learning"...
  • Page 27 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 46 – Ineg > 46 – Ineg > 46 – Ineg > OFF -- -- -- -- OFF T -- -- -- -- T -- -- -- -- Press key ← 3 times to Press key ←...

  • Page 28: Configuration - Resets

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Item contents Parameters tables 1 and 2 Protection functions : Temperature RTDs 26 Thermal image 49 Starts Motor start characteristic Start / re-acceleration detection Too long start 48 Rotor stalling on start 51LR...

  • Page 29: Microdiagnostic Messages

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 4.2.5. Microdiagnostic messages When it operates, the relay monitors proper running of the program. It warns the user of an anomaly by de-energising the Watchdog relay and causing illumination of the associated indicator LED on the front panel.

  • Page 30: Emergency Restart : Erst Key

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE For a reset, proceed in the following way : Go to the CONFIGURATION/RESET item (last first level item), then to the RESET item (last second level item). Have access to the reset type.

  • Page 31: Fault Display (Operating Level Reached, Alarm, Trip, Restart Inhibited)

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 4.2.10. Fault display (Operating level reached, alarm, trip, restart inhibited) Operating level reached : Operating level reached for a previously programmed function is displayed by the Start Function orange indicator LED (except thermal function [49]). This indicator LED is useful when the relay is subjected to tests, since it makes it possible to check that the operating level is not reached without waiting for the end of the associated time-delay.

  • Page 32: Consultation Of Last 5 Events (Alarms, Trips, Starts)

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 4.2.11. Consultation of last 5 events (alarms, trips, starts) The last 5 events classified in trips, alarms, or starts can be consulted in the STATISTICS item. The fault time is displayed only for the trips time - delayed.

  • Page 33: Functions - Verifications - Commissioning

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5 – FUNCTIONS – VERIFICATIONS - COMMISSIONING 5.1. PRELIMINARY VERIFICATIONS Generality These verifications are intended to check that the equipment did not suffer damage during transportation or storage, and prove proper operation with the set values.

  • Page 34: Test Equipment

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE IMPORTANT NOTE : All the current-related values (Operating levels and displays) are expressed in In machine, except for the earth fault which is expressed in IN CTs (residual connection) or IN0 ring CT.

  • Page 35: Protection Against Thermal Overloads [49]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE The response time-related inaccuracies come from : the trip moment with respect to the current sine wave, the inaccuracy of the starting and time counter stop system, especially when the measured times are very short, the inaccuracy related to the response times of the relay.
  • Page 36 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE However, the faults originating in fouling of the cooling circuits or reduction of the coolant are not detected. To make the thermal image sensitive to this type of fault, stator level thermal RTDs can be used as temperature detectors and corrector of the available thermal capacity.
  • Page 37 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Settings adjustments 0.8 to 1 times the thermal state θn (steps 0.01) Thermal alarm level 49-Ith>Al Thermal trip operating level 49- Ith> fixed and equal to 1.07 times the nominal value...
  • Page 38 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Cold characteristics for different time-constants Tau = Multiples of setting ___________________________________________________________________________________________ IMU307-1 GB Ind. B...
  • Page 39 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Characteristic for Tau=12 min with different prior thermal states Teta = Multiples of setting To obtain the operating time corresponding to other values for Tau, multiply the times read on these curves by setted Tau/12.
  • Page 40 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Characteristic of the thermal unit alarm set to 80 and 100 % of Tau=12 min 100% Multiples of setting To obtain the operating time corresponding to other values for Tau, multiply the times read on these curves by setted Tau/12.
  • Page 41 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE LOCAL DISPLAY OF THERMAL IMAGE PROTECTION ANSI code [49] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 ↑ ↓ → →...
  • Page 42 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of THERMAL IMAGE protection [49] CONNECTION, COEFFICIENT OF CORRECTION The protection, which depends on thermal current Ith, allows for symmetrical components Ipos and Ineg as well as the adjustment of the negative phase sequence component operating level Ineg>...
  • Page 43 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : verification of THERMAL IMAGE protection [49] CONNECTION, COEFFICIENT OF CORRECTION See previous page Sequence of operations to be performed Results to be obtained Thermal unit check with operating level correction by stator RTDs (IMM 8002) Put into service protection 49-Ith>...

  • Page 44: Protection Against Temperature Rises [26] Imm 8002 Only

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.4. PROTECTION AGAINST TEMPERATURE RISES [26] IMM 8002 ONLY Function The IMM 8002 relays have 3 inputs liable to handle thermal RTDs installed in the motors to be protected. These inputs are normally designed to be connected to 3 wires to compensate for the resistance of the wiring automatically.
  • Page 45 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TABLE OF OHMIC VALUES OHMS T(°C) Pt 100 Ni 120 Ni 100 Cu 10 9,04 103,9 127,17 105,97 9,42 107,79 134,52 112,1 9,81 111,67 142,06 118,38 10,19 115,54 149,79 124,82...
  • Page 46 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF PROTECTION AGAINST TEMPERATURE RISES ANSI code [26] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← TABLE 1 ← TABLE 2 ← ↑ ↓ → →...
  • Page 47 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of TEMPERATURE protection BY RTDS [26] CONNECTION Protection verification Connection 3–wire RTD 2–wire RTD RTD 1 RTD 2 RTD 3 Terminals 26-51 26-52 26-53 Hot point Sonde...

  • Page 48: Start Authorisation Function [5]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE START AUTHORISATION FUNCTION [5] Function Motor start authorisation or inhibit is given by means of a relay contact (relay P is recommended for this use). When motor start is authorised, the output unit is not energised ; when motor start is inhibited, it is energised.
  • Page 49 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Recommended time constant Tau A Tau A is a constant recommended by the relay to allow motor start without trip considering the following conditions : - tst> setted start time.
  • Page 50 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF START AUTHORISATION PROTECTION ANSI code [5] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← TABLE 1 ← TABLE 2 ← → → → → THERMAL IMAGE...
  • Page 51 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of START AUTHORISATION by motor thermal state unit [5/49] CONNECTION Protection check Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...
  • Page 52 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of START AUTHORISATION by voltage range [5/27+59] CONNECTION Protection verification Voltage generator connected to terminals 21-19 No voltage coefficient of correction. Sequence of operations to be performed...
  • Page 53 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of START AUTORISATION by too frequent starts unit [5/66] CONNECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 54: Too Long Start Protection [48]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.6. TOO LONG START PROTECTION [48] Function The IMM 8000 relays have a too long start and operating rotor stalling unit. Each start is individually monitored to check that the heating characteristics defined by the start variables Ist : starting current and tst : starting time are not significantly reached.
  • Page 55 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Too long start unit Ist> = Motor starting current tst> = Motor starting time Starting point at Un X Ist> ____________________________________________________________________________________________ IMU307-1 GB Ind. B...
  • Page 56 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF PROTECTION AGAINST TOO LONG STARTS ANSI code [48] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → →...
  • Page 57 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of the protection AGAINST TOO LONG STARTS [48] CONNECTION, COEFFICIENT OF CORRECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 58: Rotor Stalling After Start [51Stall]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.7. ROTOR STALLING AFTER START [51STALL] Function After the start period (2 tst> programmed, or td measured), the protection against rotor stalling is provided by a definite-time overcurrent unit. Main characteristics...
  • Page 59 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF ROTOR STALL PROTECTION AFTER START ANSI code [51STALL] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → →...
  • Page 60 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of ROTOR STALL protection AFTER START PERIOD [51STALL] CONNECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 61: Rotor Stalling Protection During Start [51Lr]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.8. ROTOR STALLING PROTECTION DURING START [51LR] Function Some motors do not withstand rotor stalling conditions during a time equal to the starting time. In general, the rotor temperature exceeds the allowed limits due to the absence of ventilation.
  • Page 62 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF LOCKED ROTOR PROTECTION DURING START ANSI code [51LR] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → →...
  • Page 63 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of ROTOR STALLING protect. DURING START PERIOD [51LR] CONNECTION, COEFFICIENT OF CORRECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 64: Protection Against Current Unbalances (Phase Loss) [46]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.9. PROTECTION AGAINST CURRENT UNBALANCES (PHASE LOSS) [46] Function Fuse-protected asynchronous motors are liable to operate with single-phase power supply following fuse blowing. This single-phase operation is detrimental to the motor, since it is accompanied by a flow of notable negative sequence currents with an increase in the total absorbed current and slippage.
  • Page 65 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Main characteristics adjustments operating level 46-INeg> 0.15 to 0.50 In (steps of 0.05 In ) minimum response time tINeg>min 0.5 to 10 s (steps of 0.1s ) operating curve see figure below time/current characteristics ²...
  • Page 66 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Negative phase sequence component unit Max. setting of tmin Min. setting of tmin ____________________________________________________________________________________________ IMU307-1 GB Ind. B...
  • Page 67 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF PROTECTION AGAINST UNBALANCES ANSI code [46] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → → STARTS CURRENTS ←...
  • Page 68 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of NEGATIVE PHASE SEQUENCE CURRENT protection [46] CONNECTION, COEFFICIENT OF CORRECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 69: Short-Circuit Protection [50]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.10. SHORT-CIRCUIT PROTECTION [50] Function The short-circuit current is detected by measuring positive phase sequence current IPos the amplitude of which is evaluated. The current operating level is automatically adjusted with respect to parameterised starting current Ist>.
  • Page 70 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF PROTECTION AGAINST SHORT-CIRCUITS ANSI code [50] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → → STARTS CURRENTS ←...
  • Page 71 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of the protection AGAINST SHORT-CIRCUITS [50] CONNECTION, COEFFICIENT OF CORRECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 72: Earth Fault Protection [51N]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.11. EARTH FAULT PROTECTION [51N] Function Earth faults occurring in the motor are detected by a unit sensitive to the amplitude of earth fault currents. For this purpose, the IMM 8000 relays have a dedicated earth fault input. This input can be connected either to a 50- or 100-turn ring CT, or to the 3 line CT in a residual connection configuration.
  • Page 73 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Earth fault protection unit ____________________________________________________________________________________________ IMU307-1 GB Ind. B...
  • Page 74 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF PROTECTION AGAINST EARTH FAULTS ANSI code [51N] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → → STARTS CURRENTS ←...
  • Page 75 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of EARTH FAULT CURRENT protection [51N] CONNECTION Protection verification Current generator connected to terminals 14-16 (1A) or 15-17 (5A) in the residual connection configuration, or current injection through the primary of the ring CT.

  • Page 76: Minimum Load Protection (Pump Unpriming) [37 P/I]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.12. MINIMUM LOAD PROTECTION (PUMP UNPRIMING) [37 P/I] To provide the protection against minimum loads function, the user can choose (with parameter setting) either detection of underpower [37P] if a PT is available, or detection of undercurrent [37I] (see Reference variables chapter).
  • Page 77 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Main characteristics Adjustments Operating level I< : 15 -70% of In> in steps of 1 % In> Time-delay tI< : 1-100 seconds in steps of 0.1 second Enabling time-delay after Start detection : tI<on...
  • Page 78 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF PROTECTION AGAINST LOSSES OF LOAD ANSI code [37P/I] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → →...
  • Page 79 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of the protection AGAINST MINIMUM LOAD (PUMP UNPRIMING) [37P] CONNECTION, COEFFICIENT OF CORRECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...
  • Page 80 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of the protection AGAINST MINIMUM LOADS (PUMP UNPRIMING) [37I] CONNECTION, COEFFICIENT OF CORRECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 81: Under Voltage Protections [27] [27St]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.13. UNDER VOLTAGE PROTECTIONS [27] [27ST] Function Voltage drop-off can be detrimental to the motor since they are generally accompanied by an increase in absorbed currents. Though the motors are protected against overloads by the thermal unit, possible...
  • Page 82 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF UNDER VOLTAGE PROTECTION AFTER AND DURING START ANSI code [27] and [27ST] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 →...
  • Page 83 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of UNDER VOLTAGE AFTER START PERIOD protection [27] CONNECTION Protection verification Voltage generator connected to terminals 19–21 Current generator connected to current input phase 1 or 3 so that normal operation after start can be simulated. Identical simulation with EL1 input activation.
  • Page 84 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of UNDER VOLTAGE ON START protection [27ST] CONNECTION Protection verification Voltage generator connected to terminals 19 –21 Current generator connected to phase 1 or 3 current input so that normal operation after start can be simulated. Identical simulation with EL1 input activation.

  • Page 85: Under Voltage For Re-Acceleration [27Rc]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.14. UNDER VOLTAGE FOR RE-ACCELERATION [27RC] Functions The motors can be re-accelerated following a disturbance having affected the network voltage. During their re-acceleration, they can absorb a current in the order of the starting current during a time close to the starting time.
  • Page 86 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF UNDER VOLTAGE PROTECTION FOR RE-ACCELERATION code [27RC] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → → CURRENTS VOLTAGES ←...
  • Page 87 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of the UNDER VOLTAGE protection FOR RE-ACCELERATION [27RC] CONNECTION Protection verification Voltage generator connected to terminals 19 –21 Current generator connected to phase 1 or 3 current input so that normal operation after start can be simulated. Identical simulation with EL1 input activation.

  • Page 88: Over Voltage Protection [59]

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.15. OVER VOLTAGE PROTECTION [59] Function Voltage rises are detected by the IMM 8000 relays by means of a over voltage unit [59] with 2 levels (1 low-set level + 1 high-set level) permanently monitoring the voltage (motor operating or stopped, during and after start).
  • Page 89 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF OVER VOLTAGE PROTECTION ANSI code [59] PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → → VOLTAGES CURRENTS ←...
  • Page 90 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of OVER VOLTAGE protection [59] CONNECTION Protection verification Voltage generator connected to terminals 21-20 No voltage coefficient of correction. Sequence of operations to be performed Results to be obtained The over voltage function is permanently active.

  • Page 91: Alarm For Trip Loop Fault Supervision

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 5.16. ALARM FOR TRIP LOOP FAULT SUPERVISION Function The IMM 8000 relays can supervise the trip loop in the following way : Once a trip control order (internal or external) has been sent, a time-delay tsup> is started. If, after the time-delay has elapsed, the contact of the switching device reporting motor stop has not changed status, or if the positive phase sequence current Ipos is greater than 2 %In, the IMM 8000 relay sends an alarm.
  • Page 92 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE DISPLAY OF PROTECTION FOR TRIP LOOP FAULT SUPERVISION PARAMETER SETTING → → → → STATISTICS PARAMETERS PARAMETERS ← ← ← ← TABLE 1 TABLE 2 → → LOSS OF LOAD SUPERVISION ←...
  • Page 93 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE TESTS : Verification of ALARM FOR TRIP LOOP SUPERVISION unit CONNECTION Protection verification Current injection Coefficient M to be applied Terminals In = 1A In = 5A - single-phase 1.732...

  • Page 94: Commissioning - Abnormal Situations

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 6 - COMMISSIONING – ABNORMAL SITUATIONS Commissioning with primary variables All the test devices connected to the secondary power supply must be removed before the relay is put into service. Before initiating commissioning, put into service all the required protections on relays T, P, A, and...
  • Page 95 IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE Diagnostic aid in the event of malfunction Verification of current circuit connections The I1 and I3 currents can be read in A and In machine. Compare their amplitude with the currents which actually flow.

  • Page 96: Maintenance

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE 7 - MAINTENANCE 7. 1. BASIC CASE TEST The basic case of the relay includes the current and voltage transformers, as well as the associated protections and loads. The components are accurate enough to allow interchangeability between various IMM 8000 electronic modules which fit into this basic case.

  • Page 97: Electronic Module Test

    IMM 8001/8002 – Digital Motor Protection Relay ICE / CEE - Connection direction A positive pulse (+ of a battery) on the hot spot of the transformers at the power terminal block causes a positive pulse on the hot spot of the corresponding signal on the Db9 socket. Because the transformer voltage ratio is high, the output signal is very low (a few millivolts).

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Imm 8002

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