Power Measurement Test - GE MOTOR MANAGEMENT RELAY 469 Instruction Manual

7.3 ADDITIONAL FUNCTIONAL TESTING
The specification for reactive and apparent power is ±1% of √3 ×2 × CT × VT × VT full scale at I
Perform the steps below to verify accuracy.
1. Alter the following setpoints:
S2 SYSTEM SETUP\CURRENT SENSING\PHASE CT PRIMARY: 1000
S2 SYSTEM SETUP\VOLTAGE SENSING\VT CONNECTION TYPE: Wye
S2 SYSTEM SETUP\VOLTAGE SENSING\VOLTAGE TRANSFORMER RATIO: 10.00:1
2. Inject current and apply voltage as per the table below. Verify accuracy of the measured values. View the
measured values in:
A2 METERING DATA\POWER METERING
Table 7–15: POWER MEASUREMENT TEST
INJECTED
CURRENT 1A UNIT,
APPLIED VOLTAGE
(Ia is the reference
vector)
Ia = 1 A ∠0°
Ib = 1 A ∠120°
Ic = 1 A ∠240°
Va = 120 V ∠342°
Vb = 120 V ∠102°
Vc = 120 V ∠222°
Ia = 1 A ∠0°
Ib = 1 A ∠120°
Ic = 1 A ∠240°
Va = 120 V ∠288°
Vb = 120 V ∠48°
Vc = 120 V ∠168°
7
7-10
INJECTED EXPECTED
CURRENT 5A UNIT, LEVEL OF
APPLIED VOLTAGE POWER
(Ia is the reference QUANTITY
vector)
Ia = 5 A ∠0°
Ib = 5 A ∠120°
Ic = 5 A ∠240°
+ 3424 kW
Va = 120 V ∠342°
Vb = 120 V ∠102°
Vc = 120 V ∠222°
Ia = 5 A ∠0°
Ib = 5 A ∠120°
Ic = 5 A ∠240°
+ 3424
Va = 120 V ∠288°
kvar
Vb = 120 V ∠48°
Vc = 120 V ∠168°
469 Motor Management Relay

7.3.2 POWER MEASUREMENT TEST

TOLERANCE MEASURED
RANGE OF POWER
POWER QUANTITY
QUANTITY
3329
to
3519
kW
3329
to
3519
kvar
7 TESTING
< 2 × CT.
avg
EXPECTED MEASURED
POWER POWER
FACTOR FACTOR
0.95 lag
0.31 lag
GE Power Management