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MD1701S test block offers facilities for monitoring and secondary injection testing any power system protection scheme.
MD1701S carries 14 circuits, each circuit comprises of 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. It is called as the “Working state”.
Insertion of the CJ28TS test plug will open the contacts which connect terminal pairs, so as to allow testing. It is called as the “Testing state”.
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