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MMLG & MMLB
MMLB.jpg
Designed as part of the Midos range, these test blocks offer facilities for monitoring and secondary injection testing of any power system protection scheme when used with the multi-fingered test plug type MMLB 01.
 
A single-finger test plug, type MMLB 02, is also available for monitoring the current flow in individual circuits which have been routed through the test block.
 
The MMLG test block carries 14 circuits, each of which is brought out to separate pairs of terminals at the rear of the case.
 
Each circuit comprises a pair of internal contacts which are normally sprung together to complete the circuit link through the block when the associated protective equipment is in normal service.
 
Insertion of the test plug type MMLB 01 open circuits the contacts which connect terminal pairs, allowing testing to proceed.
 
Key Benefits
   Test block can be mounted adjacent to Midos modular relays and systems
   Test block removes the need to disturb protective system wiring for testing
   Monitoring, isolation and secondary injection testing are simplified and quickly performed