Ge 489 User Manual Page 96
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4-46 489 Generator Management Relay GE Multilin
4.8 S7 POWER ELEMENTS 4 SETPOINTS
4
4.8.2 REACTIVE POWER
PATH: SETPOINTS ÖØ S7 POWER ELEMENTS Ö REACTIVE POWER
In a motor/generator application, it may be desirable not to trip or alarm on reactive power until the machine is online and
the field has been applied. Therefore, this feature can be blocked until the machine is online and adequate time has expired
during which the field had been applied. From that point forward, the reactive power trip and alarm elements will be active.
A value of zero for the block time indicates that the reactive power protection is active as soon as both current and voltage
are measured regardless of whether the generator is online or offline. Once the 3-phase total reactive power exceeds the
positive or negative level, for the specified delay, a trip or alarm will occur indicating a positive or negative Mvar condition.
The level is programmed in per unit of generator rated Mvar calculated from the rated MVA and rated power factor. The
reactive power elements can be used to detect loss of excitation. If the VT type is selected as "None" or VT fuse loss is
detected, the reactive power protection is disabled. Rated Mvars for the system can be calculated as follows:
For example, given Rated MVA = 100 MVA and Rated Power Factor = 0.85, we have
(EQ 4.25)
REACTIVE POWER
[ENTER] for more
BLOCK Mvar ELEMENT
FROM START: 1 s
Range: 0 to 5000 s in steps of 1
REACTIVE POWER
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM
RELAYS (2-5): ---5
Range: Any combination of Relays 2 to 5
POSITIVE Mvar ALARM
LEVEL: 0.85 x Rated
Range: 0.02 to 2.01 × Rated in steps of 0.01
NEGATIVE Mvar ALARM
LEVEL: 0.85 x Rated
Range: 0.02 to 2.01 × Rated in steps of 0.01
POSITIVE Mvar ALARM
DELAY: 10.0 s
Range: 0.2 to 120.0 s in steps of 0.1
Note: Lagging vars, overexcited
NEGATIVE Mvar ALARM
DELAY: 1.0 s
Range: 0.2 to 120.0 s in steps of 0.1
Note: Leading vars, underexcited
REACTIVE POWER ALARM
EVENTS: Off
Range: On, Off
REACTIVE POWER
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP
RELAYS (1-4): 1---
Range: Any combination of Relays 1 to 4
POSITIVE Mvar TRIP
LEVEL: 0.80 x Rated
Range: 0.02 to 2.01 × Rated in steps of 0.01
NEGATIVE Mvar TRIP
LEVEL: 0.80 x Rated
Range: 0.02 to 2.01 × Rated in steps of 0.01
POSITIVE Mvar TRIP
DELAY: 20.0 s
Range: 0.2 to 120.0 s in steps of 0.1
Note: Lagging vars, overexcited
NEGATIVE Mvar TRIP
DELAY: 20.0 s
Range: 0.2 to 120.0 s in steps of 0.1
Note: Leading vars, underexcited
ENTER
ESCAPE
ð
ð
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
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ESCAPE
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ESCAPE
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ESCAPE
MESSAGE
ESCAPE
Rated Mvars Rated MVA cos
1–
Rated PF()()sin× 100 cos
1–
0.85()()sin× 52.67 Mvars===
- 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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