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1S23 ARC Fault Module
Arc fault protection is a relatively new technique employed for the fast clearance of arcing faults within air insulated metal clad switchgear & associated cable boxes. The arc is detected using an optical sensor & the signal input to a protection device which also monitors the load current on the system. When an arc fault start current is coincident with a signal from the optical sensor a trip command is output.
The Arc Fault Interface Module (ARC Module), is designed to connect one or two optical arc fault sensors to a protection relay status input.
When combined with current checking a fast yet secure arc fault protection scheme can be achieved.