Hardware Functional Testing; Phase Current Accuracy Test; Voltage Input Accuracy Test - GE 469 Manual

7.2 HARDWARE FUNCTIONAL TESTING

7.2 HARDWARE FUNCTIONAL TESTING
The 469 specification for phase current accuracy is ±0.5% of 2 × CT when the injected current is less than
2 × CT. Perform the steps below to verify accuracy.
1. Alter the following setpoint:
S2 SYSTEM SETUP\CURRENT SENSING\PHASE CT PRIMARY: 1000A
2. Measured values should be ±10 A. Inject the values shown in the table below and verify accuracy of the
measured values. View the measured values in:
A2 METERING DATA\CURRENT METERING
Table 7–1: PHASE CURRENT TEST
INJECTED INJECTED
CURRENT CURRENT
1 A UNIT
0.1 A
0.2 A
0.5 A
1.0 A
1.5 A
2.0 A
The 469 specification for voltage input accuracy is ±0.5% of full scale (273 V). Perform the steps below to ver-
ify accuracy.
1. Alter the following setpoints:
S2 SYSTEM SETUP\VOLTAGE SENSING\VT CONNECTION TYPE: Wye
S2 SYSTEM SETUP\VOLTAGE SENSING\VOLTAGE TRANSFORMER RATIO: 10.00:1
2. Measured values should be ±13.65 V. Apply the voltage values shown in the table and verify accuracy of
7
the measured values. View the measured values in:
A2 METERING DATA\VOLTAGE METERING
Table 7–2: INPUT VOLTAGE TEST
APPLIED
LINE-NEUTRAL
VOLTAGE
30 V
50 V
100 V
150 V
200 V
270 V
7-2
EXPECTED
CURRENT
5 A UNIT READING
0.5 A 100 A
1.0 A 200 A
2.5 A 500 A
5.0 A 1000 A
7.5 A 1500 A
10 A 2000 A
EXPECTED
VOLTAGE VOLTAGE A-N
READING
300 V
500 V
1000 V
1500 V
2000 V
2700 V
469 Motor Management Relay

7.2.1 PHASE CURRENT ACCURACY TEST

MEASURED MEASURED
CURRENT CURRENT
PHASE A PHASE B

7.2.2 VOLTAGE INPUT ACCURACY TEST

MEASURED MEASURED
VOLTAGE B-N
7 TESTING
MEASURED
CURRENT
PHASE C
MEASURED
VOLTAGE C-N
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