ABB SPAJ110C Earth-fault relay
ABB SPAJ110C Earth-fault relay
The earth-fault relay SPAJ 110 C is a secondary relay that is connected to the current transform ers of the object to be protected. The earth-fault current can be measured either via a set of three phase current transformers in a residual current connection or a window-type core-balance cur rent transformer. When a core-balance current transformer is used, it should be secured that the repeatability of the current transformer is suffi cient also at high earth-fault currents. When an earth-fault occurs, the relay delivers an alarm signal, trips the circuit breaker or starts an external auto-reclose relay, depending on the application and the configuration of the relay.
Energizing inputs 1 A 5 A (modified 2002-04) Terminals Rated current In Thermal withstand capability Carry continuously Make and carry for 10 s Make and carry for 1 s Dynamic current withstand capability, half-wave value Input impedance Rated frequency fn acc. to order Output contact ratings Terminals Rated voltage Carry continuously Make and carry for 0.5 s Make and carry for 3 s Breaking capacity for dc, when the manoeuvre circuit time constant L/R ≤ 40 ms, at the control voltages- 220 V dc- 110 V dc- 48 V dc Signalling contacts Terminals Rated voltage Carry continuously Make and carry for 0.5 s Make and carry for 3 s Breaking capacity for dc, when the signalling circuit time constant L/R ≤ 40 ms, at the control voltages- 220 V dc- 110 V dc- 48 V dc External control input Terminals Control voltage level Current consumption when input activated Auxiliary supply voltage Power supply and I/O modules and voltage ranges:- type SPTU 240 S1- type SPTU 48 S1 Power consumption under quiescent/operating conditions 25-27 1 A 4 A 25 A 100 A 250 A <100 mΩ 50 Hz or 60 Hz 65-66, 68-69 250 V ac/dc 5 A 30 A 15 A 1 A 3 A 5 A 25-26 5 A 20 A 100 A 500 A 1250 A <20mΩ 70-71-72, 73-74-75, 77-78, 80-81 250 V ac/dc 5 A 10 A 8 A 0.15 A 0.25 A 1 A 10-11 18...265 V dc or 80...265 V ac 2...20 mA 80...265 V ac/dc 18...80 V dc ~4 W/~6 W
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Disconnection:
Removal of Existing Equipment:
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