1-6
745 Transformer Management Relay
GE Multilin
1.2 SPECIFICATIONS
1 PRODUCT OVERVIEW
1
OVERFREQUENCY
Operating Current Pkp: 0.05 to 1.00
×
CT in steps of 0.01
Operating Voltage Pkp
0.10 to 0.99
×
VT in steps of 0.01
Pickup Level:
50.01 to 65.00 Hz in steps of 0.01
Dropout Level:
Pickup – 0.03 Hz
Time Delay:
0.00 to 600.00 s in steps of 0.01
Signal Source:
Winding 1 Phase A current / voltage
Level Accuracy:
±0.02 Hz
Solid State Output Operate Time:
at 3% beyond pickup: 120 to 150 ms
Relay Outputs 2 to 5 Operate Time:
at 3% beyond pickup: 125 to 155 ms (delay set at 0.0 s)
OVEREXCITATION ON V/HZ
Number of Elements:
2
Operating Voltage Pkp: 0.10 to 0.99
×
VT in steps of 0.01
Pickup Level:
1.00 to 4.00 V/Hz in steps of 0.01
Curve Shapes:
Definite Time (0.1 sec. base curve);
IEC Curve A/B/C
Time Delay:
0.00 to 600.00 s in steps of 0.01
Reset Delay:
0.0 to 6000.0 s in steps of 0.1
Signal Source:
Voltage
Range:
10 to 65 Hz
Level Accuracy:
±
0.02 V/Hz
Solid State Output Operate Time:
at 1.10
×
pickup:
165 to 195 ms
Relay Outputs 2 to 5 Operate Time:
at 1.10
×
pickup:
170 to 200 ms (delay set at 0.0 s)
OVEREXCITATION ON 5
th
HARMONIC LEVEL
Operating Current Pkp: 0.03 to 1.00
×
CT in steps of 0.01
Pickup Level:
0.1 to 99.9 in steps of 0.1%
Dropout:
95% of pickup
Time Delay:
0 to 60000 s in steps of 1 s
Signal Source:
All phase currents
Solid State Output Operate Time:
at 1.10
×
pickup:
20 to 120 ms
Relay Outputs 2 to 5 Operate Time:
at 1.10
×
pickup:
25 to 125 ms (delay set at 0.0 s)
INSULATION AGING
HOTTEST SPOT LIMIT:
Pickup Level:
50 to 300°C in steps of 1
Delay:
0 to 60000 min. in steps of 1
AGING FACTOR LIMIT:
Pickup Level:
1.1 to 10.0 in steps of 0.1
Delay:
0 to 60000 min. in steps of 1
LOSS OF LIFE LIMIT:
Pickup Level:
0 to 20000
×
10 h in steps of 1
