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GE Multilin 489 Generator Management Relay 7-15
7 TESTING 7.3 ADDITIONAL FUNCTIONAL TESTS
7
f) TEST RESULTS
7.3.9 INJECTION TEST SETUP #3
Setup the 489 device as follows for the Voltage Restrained Overcurrent test.
Figure 7–3: SECONDARY INJECTION TEST SETUP #3
TEST PHASE A PHASE B PHASE C
CALCULATED MEASURED CALCULATED MEASURED CALCULATED MEASURED
Minimum Pickup
TEST PHASE A PHASE B PHASE C
CT 5 × CT CT 5 × CT CT 5 × CT
Single Infeed Fault
TEST PHASE A PHASE B PHASE C
OPERATE RESTRAIN OPERATE RESTRAIN OPERATE RESTRAIN
Slope 1 I
x
I
y
Operation
(OK/not OK)
Slope 2 I
x
I
y
Operation
(OK/not OK)
Directional
Check
I
x
N/A N/A N/A
I
y
N/A N/A N/A
Operation
(OK/not OK)
N/A N/A N/A
E10
V
NEUTRAL
1A
HGF
1A/5A
1A/5A
1A/5A
1A/5A
1A/5A
1A/5A
COM
COM
COM
COM
COM
PHASEa PHASEb PHASEc PHASE APHASE BPHASE C
COM
COM
COM
Va
Vb
Vcom
Vc
H9
G3 G6H4 H7 H1F10
AB C N
ABC N
VV V V
III I
3 PHASE VARIABLE AC TEST SET
GROUND INPUTS
NEUTRAL ENDCT's
OUTPUT CT's
808822A2.CDR
PHASE
VOLTAGEINPUTS
G10
H3 H6G5 G8 H2
G9 H10
G4 G7 G2H5 H8G1
AUTOMATICCT
SHORTING
BAR
V
C
V
A
V
B