Features
- Finger safe test sockets
- Automatic CT shorting
- 28 independent test groups
- Custom specified test circuits
Application
Test blocks let technicians quickly and safely isolate protection relays so test signals can be injected and system performance verified at the relay panel. Benefits include reduced equipment downtime, no disturbance to wiring, terminals or settings, and the ability to isolate the auxiliary supply. The 4M402 Test Block is a general-purpose isolation and test signal injection point with 'finger safe' 4 mm sockets for operator safety. For up to 14 test circuits, refer to the 4M400 model.
