Voltage Phase Reversal Accuracy - GE Multilin 489 Instruction Manual
Generator management relay
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Also See for Multilin 489:
- Instruction manual (306 pages) ,
- Communications manual (78 pages) ,
- Instruction manual (259 pages)
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Current/Voltage
Vab=120V∠0°
Vbc=120V∠120°lag
Vca=120V∠240°lag
Ian=5 A∠10°lag
Ibn=5 A∠130°lag
Icn=5 A∠250°lag
Vab=120V∠0°
Vbc=120V∠120°lag
Vca=120V∠240°lag
Ian=5 A∠340°lag
Ibn=5 A∠100°lag
Icn=5 A∠220°lag
Vab=120V∠0°
Vbc=120V∠120°lag
Vca=120V∠240°lag
Ian=5 A∠330°lag
Ibn=5 A∠90°lag
Icn=5 A∠210°lag
Vab=120V∠0°
Vbc=120V∠120°lag
Vca=120V∠240°lag
Ian=5 A∠30°lag
Ibn=5 A∠150°lag
Icn=5 A∠270°lag
8
4: Activated,
: Not Activated
7.3.4
Voltage Phase Reversal Accuracy
7–14
Courtesy of NationalSwitchgear.com
REACTIVE POWER ALARM:
ASSIGN ALARM RELAYS(2-5):
POSTIVE MVAR ALARM LEVEL:
NEGATIVE MVAR ALARM LEVEL:
REACTIVE POWER ALARM DELAY:
REACTIVE POWER ALARM EVENT:
REACTIVE POWER TRIP: "
ASSIGN TRIP RELAYS(1-4):
POSTIVE MVAR TRIP LEVEL:
NEGATIVE MVAR TRIP LEVEL:
REACTIVE POWER TRIP DELAY:
Inject current and apply voltage as per the table below.
Verify the alarm/trip elements and the accuracy of the measured values.
View the measured values in the
METERING
View the Event Records in the
Mvar
Expected Tolerance Measured Expected Observed Delay Expected Observed Delay
18
13 to 23
–35
–40 to –30
–52
–57 to –47
52
47 to 57
The relay can detect voltage phase rotation and protect against phase reversal. To test the
phase reversal element, perform the following steps:
In the
S2 SYSTEM SETUP
VT CONNECTION TYPE:
In the
S2 SYSTEM SETUP
"Unlatched"
"---5"
"0.6 x Rated"
"0.6 x Rated"
"5 s"
"On"
Unlatched"
"1---"
"0.75 x Rated"
"0.75 x Rated"
"10 s"
A2 METERING DATA
page.
A5 EVENT RECORD
Alarm
N/A
4
4
4
4
VOLTAGE SENSING
"Wye"
GEN. PARAMETERS
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 7: TESTING
POWER
menu.
Trip
8
N/A
8
N/A
4
4
menu, set:
menu, set:
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