ADDITIONAL FUNCTIONAL TESTING
7. TESTING
7-12
The SR469 specification for unbalance accuracy is
±
2%. Perform the steps below to verify accuracy.
1.
Alter the following setpoints:
SETPOINT S2:SYSTEM SETUP\CURRENT SENSING\PHASE CT PRIMARY: 1000A
SETPOINT S2:SYSTEM SETUP\CURRENT SENSING\MOTOR FULL LOAD AMPS FLA: 1000A
2.
Inject the values shown in the table below and verify accuracy of the measured values. View the measured values in:
ACTUAL VALUES A2:\METERING DATA\CURRENT METERING
Table 7-16 CURRENT UNBALANCE TEST
INJECTED
CURRENT
1A UNIT
(A)
INJECTED
CURRENT
5A UNIT
(A)
EXPECTED
UNBALANCE
LEVEL
(%)
MEASURED
UNBALANCE
LEVEL
(%)
Ia= 0.78
∠
0
°
Ib=1
∠
247
°
Ic=1
∠
113
°
Ia= 3.9
∠
0
°
Ib=5
∠
247
°
Ic=5
∠
113
°
14
Ia=1.56
∠
0
°
Ib=2
∠
247
°
Ic=2
∠
113
°
Ia=7.8
∠
0
°
Ib=10
∠
247
°
Ic=10
∠
113
°
15
Ia= 0.39
∠
0
°
Ib=0.5
∠
247
°
Ic=0.5
∠
113
°
Ia= 1.95
∠
0
°
Ib=2.5
∠
247
°
Ic=2.5
∠
113
°
7
7.3.4
VOLTAGE PHASE REVERSAL TEST
The SR469 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:
SETPOINT S2:SYSTEM SETUP\VOLTAGE SENSING\VT CONNECTION TYPE: Wye or Delta
SETPOINT S2:SYSTEM SETUP\POWER SYSTEM\SYSTEM PHASE SEQUENCE: ABC
SETPOINT S9:VOLTAGE ELEMENTS\PHASE REVERSAL\PHASE REVERSAL TRIP: Latched
SETPOINT S9:VOLTAGE ELEMENTS\PHASE REVERSAL\ASSIGN TRIP RELAYS: Trip
2.
Apply voltages as per the table below. Verify the SR469 operation on voltage phase reversal.
Table 7-17 VOLTAGE PHASE REVERSAL TEST
APPLIED VOLTAGE
EXPECTED RESULT
8
NO TRIP
4
PHASE REVERSAL TRIP
OBSERVED RESULT
8
NO TRIP
4
PHASE REVERSAL TRIP
Va=120V
∠
0
°
Vb=120V
∠
120
°
Vc=120V
∠
240
°
8
Va=120V
∠
0
°
Vb=120V
∠
240
°
Vc=120V
∠
120
°
4
Summary of Contents for SR469
Page 7: ......
Page 19: ...2 INSTALLATION MECHANICAL 2 5 2 1 5 TERMINAL LOCATIONS Figure 2 11 TERMINAL LAYOUT...
Page 21: ...2 INSTALLATION ELECTRICAL 2 7 Figure 2 12 TYPICAL WIRING DIAGRAM...
Page 32: ...ELECTRICAL 2 INSTALLATION 2 18 2 2 14 TYPICAL 2 SPEED MOTOR WIRING...
Page 39: ...OVERVIEW 3 SR469 OPERATION 3 6 yy SETPOINTS yy S1 SR469 SETUP...
Page 104: ...4 SETPOINT PROGRAMMING S11 MONITORING 4 65 Figure 4 24 TRIP COIL SUPERVISION...
Page 113: ...S12 ANALOG I O 4 SETPOINT PROGRAMMING 4 74...
Page 244: ...8 469PC PROGRAM WAVEFORM CAPTURE 8 13 Figure 8 11 WAVEFORM CAPTURE...