Additional Functional Testing; Overload Curve Test; Power Measurement Test - GE 469 Instruction Manual

469
Motor Management Relay

Overload Curve Test

AVERAGE PHASE
CURRENT
DISPLAYED
1050 A
1200 A
1750 A
3000 A
6000 A
10000 A
Power Measurement
Test
7–8

Additional Functional Testing

The 469 specification for overload curve timing accuracy is ±100 ms or ±2% of time
to trip. Pickup accuracy is as per the current inputs (±0.5% of 2 × CT when the
injected current is less than 2 × CT and ±1% of 20 × CT when the injected current is
≥ 2 × CT). Perform the steps below to verify accuracy.
1. Alter the following setpoints:
S2 SYSTEM SETUP CURRENT SENSING
S2 SYSTEM SETUP CURRENT SENSING
S5 THERMAL MODEL THERMAL MODEL
S5 THERMAL MODEL THERMAL MODEL
S5 THERMAL MODEL THERMAL MODEL
S5 THERMAL MODEL THERMAL MODEL
S5 THERMAL MODEL THERMAL MODEL
S5 THERMAL MODEL O/L CURVE SETUP
2. Any trip must be reset prior to each test. Short the emergency restart terminals
momentarily immediately prior to each overload curve test to ensure that the
thermal capacity used is zero. Failure to do so will result in shorter trip times.
Inject the current of the proper amplitude to obtain the values as shown and
verify the trip times. Motor load may be viewed in
.
METERING
3. Thermal capacity used and estimated time to trip may be viewed in
.
MOTOR STATUS
PICKUP
LEVEL
1.05
1.20
1.75
3.00
6.00
10.00
The specification for reactive and apparent power is ±1% of
scale at I < 2 × CT. Perform the steps below to verify accuracy.
avg
1. Alter the following setpoints:
S2 SYSTEM SETUP CURRENT SENSING
S2 SYSTEM SETUP VOLTAGE SENSING
S2 SYSTEM SETUP
"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
.
METERING
http://www.GEindustrial.com/multilin
Additional Functional Testing
PHASE CT PRIMARY:
MOTOR FULL LOAD AMPS FLA:
SELECT CURVE STYLE:
OVERLOAD PICKUP LEVEL:
UNBALANCE BIAS K FACTOR:
HOT/COLD SAFE STALL RATIO:
ENABLE RTD BIASING:
STANDARD OVERLOAD CURVE NUMBER:
EXPECTED TOLERANCE RANGE
TIME TO TRIP
never n/a
795.44 sec. 779.53 to 811.35 sec.
169.66 sec. 166.27 to 173.05 sec.
43.73 sec. 42.86 to 44.60 sec.
9.99 sec. 9.79 to 10.19 sec.
5.55 sec. 5.44 to 5.66 sec.
PHASE CT PRIMARY:
VT CONNECTION TYPE:
VOLTAGE SENSING VOLTAGE TRANSFORMER RATIO:
A2 METERING DATA
"1000"
"1000"
"Standard"
"1.10"
"0"
"1.00"
"No"
"4"
A2 METERING DATA CURRENT
A1 STATUS
MEASURED
TIME TO TRIP
3 ×2 × CT × VT × VT full
"1000"
"Wye"
POWER
GE Multilin