Voltage Phase Reversal Accuracy; Injection Test Setup #2 - GE 489 Instruction Manual

7.3 ADDITIONAL FUNCTIONAL TESTS
The can detect voltage phase rotation and protect against phase reversal. To test the phase reversal element, perform the
following steps:
1. Alter the following setpoints:
S2 SYSTEM SETUP
S2 SYSTEM SETUP
S3 DIGITAL INPUTS
S6 VOLTAGE ELEMENTS
S6 VOLTAGE ELEMENTS
2. Apply voltages as per the table below. Verify the operation on voltage phase reversal
APPLIED VOLTAGE
Va = 120 V∠0°
Vb = 120 V∠120° lag
Vc = 120 V∠240° lag
Va = 120 V∠0°
Vb = 120 V∠240° lag
Vc = 120 V∠120° lag
Setup the 489 device as follows for the GE Multilin HGF Ground Accuracy Test, Neutral Voltage (3rd Harmonic) Accuracy
Test, and the Phase Differential Trip Test.
V C
V A
V B
7
E10
7-12
VOLTAGE SENSING VT CONNECTION TYPE:
GEN. PARAMETERS GENERATOR PHASE SEQUENCE:
BREAKER STATUS BREAKER STATUS:
PHASE REVERSAL PHASE REVERSAL TRIP:
PHASE REVERSAL
EXPECTED RESULT
NO TRIP
PHASE REVERSAL TRIP
3 PHASE VARIABLE AC TEST SET
V V V V
A B C N
NC NC
50:0.25
H3 G4
F10 G9 H9 G10 H10 G3 H4
PHASE a PHASE b PHASE c
GROUND INPUTS
NEUTRAL END CT's
Figure 7–2: SECONDARY INJECTION SETUP #2
489 Generator Management Relay

7.3.4 VOLTAGE PHASE REVERSAL ACCURACY

"Wye"
"ABC"
"Breaker Auxiliary a"
"Unlatched"
"1---"
ASSIGN TRIP RELAYS:
OBSERVED RESULT
I
A
G5 H5 H6
G6
AUTOMATIC CT
SHORTING
BAR
PHASE A PHASE B PHASE C
OUTPUT CT's
7 TESTING

7.3.5 INJECTION TEST SETUP #2

I I I
B C N
G7 G8 H8 G2 H2 G1
H7 H1
PHASE
VOLTAGE INPUTS
808817A1.CDR
GE Multilin