The ERMLG Test Block and Test Plug provides facilities for monitoring and secondary injection testing of any power system protection scheme, removing the need to disturb protective system wiring for testing. It is housed within an Epsilon enclosure and has 14 pairs of spring loaded contacts which are linked to a terminal block positioned at the rear of the enclosure. Each pair of contacts are normally closed, completing the circuit through the test block when the associated protection equipment is in use.
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