SPAJ110C-AA ABB Earth-fault relay Module

Description:

The earth-fault relay SPAJ 110 C is a secondary relay that is connected to the current transformers 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 current transformer. When a core-balance current transformer is used, it should be secured that the repeatability of the current transformer is sufficient 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.

Parameters:
Input Voltage: 24VDC.
Output Voltage: 24VDC.
Maximum Output Current: 10A.
Operating Temperature Range: -40℃ to +70℃.
Sampling Period: 100ms.
Redundancy: Dual power supply and processor.
Compatibility: Compatible with PLC systems.
Communication Protocol: Modbus TCP/IP.
Processor: Intel Atom D2550 Dual-core, 4-thread.
Clock Frequency: 1.86GHz.
Chipset: Intel NM10.
Memory: DDR3 800MHz SDRAM.
Disk: mSATA, SD card.

Features：

-Low-set neutral overcurrent stage with definite time or inverse time characteristic
-High-set neutral overcurrent stage with definite time characteristic
-Output relay functions to be freely configured
-Flexible adaptation to different types of application
-Serial interface for connecting the relay to a fibre optic object bus and substation and network control systems
-Digital display of setting values, neutral current measured, memorized fault values, etc.
-Continuous self-supervision with auto-diagnostics of hardware and software