Rail module designed to connect one or two optical arc fault sensors to a protection relay status input.
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.
Features
Compact, simple, rugged and economic design
Simple wiring and DIN rail mounting
Interface for one or two 1S30 arc fault sensors
High speed arc fault tripping output to interface with protection relay status inputs
Apply to initiate IEC61850 GOOSE messaging of arc fault events
Continuous arc fault sensor supervision
Arc fault pick up and supervision healthy indication
24, 32, 48, 110, 125, 220, 240 and 250V DC auxiliary versions
1S30 arc fault sensor with 1 or 2 optical detectors

Applications : for overhead lines