A2 Metering Data; Current Metering - GE 469 Instruction Manual

CHAPTER 6: ACTUAL VALUES
6.3

A2 Metering Data

6.3.1

Current Metering

CURRENT
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469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
PATH: ACTUAL VALUES
[
METERING
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
All measured current values are displayed here. The
ratio of negative-sequence to positive-sequence current, I
operating at a load (I
defined as I / I × I
2 1 avg
trips when a motor is lightly loaded. The
equivalent motor heating current caused by the unbalance k factor.
A2 METERING DATA
A: 0 B:
0
C: 0 Amps
AVERAGE PHASE
CURRENT: 0 Amps
MOTOR LOAD:
0.00 x FLA
CURRENT UNBAL-
ANCE:
U/B BIASED MOTOR
LOAD: 0.00 x FLA
GROUND CURRENT:
0.00 Amps
A: 0 B:
0
) greater than FLA. If the motor I
avg
/ FLA. This derating is necessary to prevent nuisance alarms and
U/B BIASED MOTOR LOAD
CURRENT METERING
Range: 0 to 100000 A
Range: 0 to 100000 A
Range: 0.00 to 20.00 x FLA
Range: 0.00 to 20.00 x FLA
Range: 0.00 to 5000.00 A. Not seen if
Ground CT is set as "None".
Range: 0 to 5000 A. Seen if Phase
Differential CT has 1A/5A
Secondary
is defined as the
CURRENT UNBALANCE
/ I when the motor is
2 1
is less than FLA, unbalance is
avg
value shows the
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