Hardware Functional Testing - GE Multilin 469 Instruction Manual

CHAPTER 7: TESTING
7.2

Hardware Functional Testing

7.2.1 Phase Current Accuracy Test
7.2.2 Voltage Input Accuracy Test
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
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.
Alter the following settings:
S2 SYSTEM SETUP
Measured values should be ±10 A.
Inject the values shown in the table below.
Verify accuracy of the measured values.
View the measured values in:
INJECTED INJECTED
CURRENT CURRENT
1 A UNIT 5 A UNIT
0.1 A 0.5 A
0.2 A 1.0 A
0.5 A 2.5 A
1.0 A 5.0 A
1.5 A 7.5 A
2.0 A 10 A
The 469 specification for voltage input accuracy is ±0.5% of full scale (273 V). Perform the
steps below to verify accuracy.
Alter the following settings:
S2 SYSTEM SETUP
S2 SYSTEM SETUP
Measured values should be ±13.65 V.
Apply the voltage values shown in the table.
Verify accuracy of the measured values.
View the measured values in:
APPLIED EXPECTED
LINE-NEUTRAL VOLTAGE
VOLTAGE READING
30 V 300 V
50 V 500 V
100 V 1000 V
150 V 1500 V
CURRENT SENSING PHASE CT PRIMARY:
A2 METERING DATA CURRENT METERING
EXPECTED MEASURED
CURRENT CURRENT
READING PHASE A
100 A
200 A
500 A
1000 A
1500 A
2000 A
VOLTAGE SENSING VT CONNECTION TYPE:
VOLTAGE SENSING VOLTAGE TRANSFORMER RATIO:
A2 METERING DATA VOLTAGE METERING
MEASURED
VOLTAGE A-N
"1000 A"
MEASURED MEASURED
CURRENT CURRENT
PHASE B PHASE C
"Wye"
"10.00:1"
MEASURED MEASURED
VOLTAGE B-N VOLTAGE C-N
7–3