- 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.

 - 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.

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

 - The 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.

• Access to these internal circuits for testing purposes, can be gained by removing the front cover. A metallic probe secured to the inside face of the MMLG 01 cover is automatically withdrawn when the cover is removed, so interrupting the circuit between terminals 13 and 14. By routing the main dc auxiliary supply to the protection scheme or relay through this circuit, removal of the test block cover will thereby prevent inadvertent tripping of the protection during the ensuing tests.

If you need more information, please access this link:

https://www.gegridsolutions.com/Multilin/catalog/MMLG.htm

or contact with us to get assistant.