GE 745 - O Utputs

CHAPTER 2: OVERVIEW SPECIFICATIONS
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 2–9
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
2.2.4 Outputs
ANALOG OUTPUTS
Number of outputs:.......................................7
Output range:...................................................0 to 1 mA, 0 to 5 mA, 0 to 10 mA, 0 to 20 mA, or 4 to 20
mA
Maximum load:................................................10 kΩ at 0 to 1 mA
600 Ω at 4 to 20 mA
Isolation:.............................................................fully isolated
Accuracy:...........................................................±1% of full scale
SOLID STATE OUTPUT
Maximum ratings:..........................................make and carry 15 A at 250 V DC for 500 ms
TRIP RELAYS 2 TO 5
Configuration:..................................................form-A (breaker trip rated)
Contact material:............................................silver alloy
Max. ratings:.....................................................300 V AC, 250 V DC, 15 A, 1500 VA
Make/carry:.......................................................20 A continuous; 40 A for 0.2 s (DC voltage); 80 A for 0.2 s
(AC voltage)
AUXILIARY 6 TO 8 RELAYS, SELF-TEST RELAY 9
Configuration:..................................................form-C
Contact material:............................................silver alloy
Maximum ratings:..........................................300 V AC, 250 V DC, 15 A, 1500 VA
Make/carry:.......................................................10 A continuous; 30 A for 0.2 s
Voltage Break Maximum load
DC resistive 30 V DC 10 A 300 W
125 V DC 0.8 A 300 W
250 V DC 0.4 A 300 W
DC inductive
L/R = 40 ms
30 V DC 5 A 150 W
125 V DC 0.3 A 150 W
250 V DC 0.2 A 150 W
AC resistive 120 V AC 20 A 5000 VA
240 V AC 20 A 5000 VA
AC inductive
PF = 0.4
120 V AC 8 A 5000 VA
240 V AC 7 A 5000 VA