Multilin SR469 - 7.2 HARDWARE FUNCTIONAL TESTING

HARDWARE FUNCTIONAL TESTING 7. TESTING
7-2
7.2 HARDWARE FUNCTIONAL TESTING
7.2.1 PHASE CURRENT ACCURACY TEST
The SR469 specification for phase current accuracy is ±0.5% of 2xCT when the injected current is < 2xCT. Perform the steps below to verify
accuracy.
1. Alter the following setpoint:
SETPOINT S2:SYSTEM SETUP\CURRENT SENSING\PHASE CT PRIMARY: 1000A
2. Measured values should be ±10A. 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 7-1 PHASE CURRENT TEST
INJECTED
CURRENT
1 A UNIT
(A)
INJECTED
CURRENT
5 A UNIT
(A)
EXPECTED
CURRENT
READING
(A)
MEASURED
CURRENT
PHASE A
(A)
MEASURED
CURRENT
PHASE B
(A)
MEASURED
CURRENT
PHASE C
(A)
0.1 0.5 100
0.2 1.0 200
0.5 2.5 500
1 5 1000
1.5 7.5 1500
2 10 2000
7.2.2 VOLTAGE INPUT ACCURACY TEST
The SR469 specification for voltage input accuracy is ±0.5% of full scale(273V). Perform the steps below to verify accuracy.
1. Alter the following setpoints:
SETPOINT S2:SYSTEM SETUP\VOLTAGE SENSING\VT CONNECTION TYPE: Wye
SETPOINT S2:SYSTEM SETUP\VOLTAGE SENSING\VOLTAGE TRANSFORMER RATIO: 10.00:1
2. Measured values should be ±13.65V. Apply the voltage values shown in the table and verify accuracy of the measured values. View the
measured values in:
3.
ACTUAL VALUES A2:\METERING DATA\VOLTAGE METERING
Table 7-2 VOLTAGE INPUT TEST
APPLIED
LINE-NEUTRAL
VOLTAGE
(V)
EXPECTED
VOLTAGE
READING
(V)
MEASURED
VOLTAGE
A-N
(V)
MEASURED
VOLTAGE
B-N
(V)
MEASURED
VOLTAGE
C-N
(V)
30 300
50 500
100 1000
150 1500
200 2000
270 2700