Ge 489 User Manual Page 216
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7-4 489 Generator Management Relay GE Multilin
7.2 HARDWARE FUNCTIONAL TESTS 7 TESTING
7
7.2.3 GROUND (1 A), NEUTRAL, AND DIFFERENTIAL CURRENT ACCURACY
The specification for neutral, differential and 1 A ground current input accuracy is ±0.5% of 2 × CT. Perform the steps below
to verify accuracy.
1. Alter the following setpoints:
S2 SYSTEM SETUP Ö CURRENT SENSING ÖØ GROUND CT: "1A Secondary"
S2 SYSTEM SETUP Ö CURRENT SENSING ÖØ GROUND CT RATIO: "1000:1"
S2 SYSTEM SETUP ÖØ CURRENT SENSING Ö PHASE CT PRIMARY: "1000 A"
S5 CURRENT ELEMENTS ÖØ PHASE DIFFERENTIAL Ö PHASE DIFFERENTIAL TRIP: "Unlatched"
S5 CURRENT ELEMENTS ÖØ PHASE DIFFERENTIAL ÖØ DIFFERENTIAL TRIP MIN. PICKUP: "0.1 x CT"
2. Note: the last two setpoints are needed to view the neutral and the differential current. The trip element will operate
when differential current exceeds 100 A.
3. Measured values should be ±10 A. Inject (I
A
only) the values shown in the table below into one phase only and verify
accuracy of the measured values. View the measured values in:
A2 METERING DATA Ö CURRENT METERING
or press the key to view the current values when differential trip element is active.
7.2.4 NEUTRAL VOLTAGE (FUNDAMENTAL) ACCURACY
The specification for neutral voltage (fundamental) accuracy is ±0.5% of full scale (100 V). Perform the steps below to verify
accuracy.
1. Alter the following setpoints:
S2 SYSTEM SETUP ÖØ VOLTAGE SENSING ÖØ NEUTRAL VOLTAGE TRANSFORMER: "Yes"
S2 SYSTEM SETUP ÖØ VOLTAGE SENSING ÖØ NEUTRAL V.T. RATIO: "10.00:1"
S2 SYSTEM SETUP ÖØ GEN. PARAMETERS ÖØ GENERATOR NOMINAL FREQUENCY: "60 Hz"
2. Measured values should be ±5.0 V. Apply the voltage values shown in the table and verify accuracy of the measured
values. View the measured values in:
A2 METERING DATA ÖØ VOLTAGE METERING
Table 7–1: NEUTRAL AND GROUND CURRENT TEST RESULTS
INJECTED
CURRENT
1 A UNIT
EXPECTED
CURRENT
READING
MEASURED
GROUND
CURRENT
MEASURED NEUTRAL CURRENT
PHASE A PHASE B PHASE C
0.1 A 100 A
0.2 A 200 A
0.5 A 500 A
1 A 1000 A
Table 7–2: DIFFERENTIAL CURRENT TEST RESULTS
INJECTED
CURRENT
EXPECTED CURRENT READING MEASURED DIFFERENTIAL CURRENT
DIFF. PHASE A DIFF PHASE B,C PHASE A PHASE B PHASE C
0.1 A 200 A 100 A
0.2 A 400 A 200 A
0.5 A 1000 A 500 A
1 A 2000 A 1000 A
APPLIED NEUTRAL
VOLTAGE AT 60 HZ
EXPECTED NEUTRAL
VOLTAGE
MEASURED NEUTRAL
VOLTAGE
10 V 100 V
30 V 300 V
50 V 500 V
NEXT
- GENERATOR MANAGEMENT RELAY 1
- Instruction Manual 1
- 1. INTRODUCTION 1.1 OVERVIEW 3
- 4. SETPOINTS 4.1 OVERVIEW 3
- 5. ACTUAL VALUES 5.1 OVERVIEW 5
- 7. TESTING 7.1 TEST SETUP 6
- TABLE OF CONTENTS 8
- 27TN59GN 9
- ≥ 2 × CT: ±1% of 20 × CT 12
- LONG-TERM STORAGE 16
- 808704A1.CDR 19
- 2 INSTALLATION 2.1 MECHANICAL 21
- 2.1.5 TERMINAL LOCATIONS 21
- Figure 2–8: TERMINAL LAYOUT 21
- 2.1 MECHANICAL 2 INSTALLATION 22
- Table 2–1: 489 TERMINAL LIST 22
- 2 INSTALLATION 2.2 ELECTRICAL 23
- RTD SENSING 28
- GE Multilin 31
- 2.2 ELECTRICAL 2 INSTALLATION 32
- S3 DIGITAL INPUTS / 33
- SETPOINT 34
- NEW SETPOINT HAS BEEN 35
- 808745A1.CDR 37
- 808744A1.CDR 39
- 32 I 151 A8 .000 41
- 808726A2.CDR 45
- 808730A2.CDR 46
- VOLTAGE LEVEL 47
- CURRENT PHASOR 47
- VOLTAGE PHASOR 47
- CURRENT LEVEL 47
- EVENT SELECT BUTTONS 48
- EVENT LISTING 48
- VIEW DATA 48
- CLEAR EVENTS 48
- ACTIVATE SET 56
- (EQ 4.1) 62
- (EQ 4.2) 63
- S1 489 SETUP Ö 64
- Range: Breaker Auxiliary a 64
- Breaker Auxiliary b 64
- (EQ 4.8) 74
- 808731A1.CDR 75
- (EQ 4.9) 76
- CURRENT VOLTAGE 77
- (EQ 4.10) 78
- (EQ 4.11) 78
- I(multiples of CT) 81
- (multiples of CT) 81
- 808812A3.CDR 82
- (EQ 4.18) 83
- (EQ 4.19) 84
- TIME DELAY SETTING 85
- TO Vneutral OFEACH489 90
- AUXILIARY CONTACT 90
- TO DIGITAL INPUT FOR 90
- NEUTRAL O/V SUPERVISION 90
- GROUNDINGSWITCH 90
- (EQ 4.21) 91
- (EQ 4.22) 91
- (EQ 4.23) 92
- (EQ 4.24) 92
- 808740A1.CDR 94
- (EQ 4.25) 96
- 806827A1.CDR 105
- (EQ 4.26) 107
- (EQ 4.27) 107
- MULTIPLE OF FULL LOAD AMPS 108
- TIME IN SECONDS 108
- (EQ 4.28) 109
- TIME TO TRIP IN SECONDS 110
- THERMAL LIMITS 111
- FOR HIGH INERTIAL LOAD 111
- VOLTAGE DEPENDENT OVERLOAD 112
- (CUSTOM CURVE) 112
- VOLTAGE DEPENDENT 113
- OVERLOAD PROTECTION CURVES 113
- OVERLOAD PROTECTION at 80% V 114
- NEMA GE MULTILIN 115
- Thermal Capacity Used 116
- MOTOR TRIPPED 116
- 100% LOAD 116
- MOTOR STOPPED 116
- 80% LOAD 116
- 808721A1.CDR 118
- Range: On, Off 120
- (EQ 4.37) 123
- (EQ 4.38) 123
- 808738A1.CDR 124
- THIS FEATURE NOT PROGRAMMED 149
- THIS FEA 149
- TURE NOT PROGRAMMED 149
- THIS FEATURE NOT PRO 150
- LAST TRIP DATA: 158
- ACTIVE ALARMS: 158
- START BLOCK 158
- LOCKOUTS: 158
- 6.3.7 489 MEMORY MAP 172
- 6.3.8 MEMORY MAP DATA FORMATS 196
- No Counters Reported 202
- Configurable 202
- 7.1 TEST SETUP 7 TESTING 214
- A2 METERING DATA 218
- TEMPERATURE 218
- 3 PHASE VARIABLE AC TEST SET 224
- (EQ 7.5) 226
- (EQ 7.6) 226
- (EQ 7.7) 226
- 808739A1.CDR 229
- 808736A1.CDR 231
- 808735A1.CDR 231
- 808734A1.CDR 232
- (EQ A.1) 233
- (EQ A.2) 233
- HGF3/HGF5 234
- DIMENSIONS 234
- 808712A1.CDR 236
- 489 ANSI 237
- MODERATELY INVERSE 237
- NORMALLY INVERSE 238
- VERY INVERSE 239
- CURRENT (I/Ipu) 240
- TRIPTIME (sec) 240
- DEFINITE TIME 241
- SHORT INVERSE 242
- IAC INVERSE 243
- EXTREME INVERSE 245
- IEC CURVE A (BS142) 246
- IEC CURVE B (BS142) 247
- IEC CURVE C (BS142) 248
- GE Multilin Relay Warranty 251
- Numerics 253
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