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L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
2
Low range power supply:
8 A / 250 V
High range power supply:
4 A / 250 V
Interrupting capacity:
AC:
100 000 A RMS symmetrical
DC:
10 000 A
2.6.7 Outputs
FORM-A RELAY
Make and carry for 0.2 s:
30 A as per ANSI C37.90
Carry continuous:
6 A
Break (DC inductive, L/R = 40 ms):
Operate time:
< 4 ms
Contact material:
silver alloy
LATCHING RELAY
Make and carry for 0.2 s:
30 A as per ANSI C37.90
Carry continuous:
6 A as per IEEE C37.90
Break (DC resistive as per IEC61810-1):
Operate time:
< 4 ms
Contact material:
silver alloy
Control:
separate operate and reset inputs
Control mode:
operate-dominant or reset-dominant
FORM-A VOLTAGE MONITOR
Applicable voltage:
approx. 15 to 250 V DC
Trickle current:
approx. 1 to 2.5 mA
FORM-A CURRENT MONITOR
Threshold current:
approx. 80 to 100 mA
FORM-C AND CRITICAL FAILURE RELAY
Make and carry for 0.2 s:
30 A as per ANSI C37.90
Carry continuous:
8 A
Break (DC inductive, L/R = 40 ms):
Voltage
Current
24 V
1 A
48 V
0.5 A
125 V
0.3 A
250 V
0.2 A
Voltage
Current
24 V
6 A
48 V
1.6 A
125 V
0.4 A
250 V
0.2 A
Voltage
Current
24 V
1 A
48 V
0.5 A
125 V
0.3 A
250 V
0.2 A
