Ge 489 User Manual Page 83
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GE Multilin 489 Generator Management Relay 4-33
4 SETPOINTS 4.7 S6 VOLTAGE ELEMENTS
4
4.7S6 VOLTAGE ELEMENTS 4.7.1 UNDERVOLTAGE
PATH: SETPOINTS ÖØ S6 VOLTAGE ELEMENTS Ö UNDERVOLTAGE
The undervoltage elements may be used for protection of the generator and/or its auxiliary equipment during prolonged
undervoltage conditions. They are active only when the generator is online. The alarm element is definite time and the trip
element can be definite time or a curve. When the magnitude of the average phase-phase voltage is less than the pickup ×
the generator rated phase-phase voltage, the element will begin to time out. If the time expires, a trip or alarm will occur.
UNDERVOLTAGE
[ENTER] for more
UNDERVOLTAGE
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM
RELAYS (2-5): ---5
Range: Any combination of Relays 2 to 5
UNDERVOLTAGE ALARM
PICKUP: 0.85 x Rated
Range: 0.50 to 0.99 × Rated in steps of 0.01
UNDERVOLTAGE ALARM
DELAY: 3.0 s
Range: 0.2 to 120.0 s in steps of 0.1
UNDERVOLTAGE ALARM
EVENTS: Off
Range: On, Off
UNDERVOLTAGE
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP
RELAYS (1-4): 1---
Range: Any combination of Relays 1 to 4
UNDERVOLTAGE TRIP
PICKUP: 0.80 x Rated
Range: 0.50 to 0.99 × Rated in steps of 0.01
UNDERVOLTAGE TRIP
DELAY: 1.0 s
Range: 0.2 to 10.0 s in steps of 0.1
UNDERVOLTAGE CURVE
RESET RATE: 1.4 s
Range: 0.0 to 999.9 s in steps of 0.1
UNDERVOLTAGE CURVE
ELEMENT: Curve
Range: Curve, Definite Time
The curve reset rate is a linear reset time from the threshold
of trip. If the VT type is selected as None, VT fuse loss is
detected, or the magnitude of I
1
< 7.5% CT, the undervoltage
protection is disabled. The pickup levels are insensitive to
frequency over the range of 5 to 90 Hz.
The formula for the undervoltage curve is:
(EQ 4.18)
where: T = trip time in seconds
D = UNDERVOLTAGE TRIP DELAY setpoint
V = actual average phase-phase voltage
V
pickup
= UNDERVOLTAGE TRIP PICKUP setpoint
ENTER
ESCAPE
ð
ð
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
T
D
1 VV
pickup
⁄–
------------------------------------= , when VV
pickup
<
808742A1.CDR
0.1
1
10
100
1000
00.20.4 0.60.81
Multiples of Undervoltage Pickup
10
3
1
0.3
TIME DELAY SETTING
TimetoTrip (seconds)
- 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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