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MD1701 Series Test Blocks

  • MD1701 series products, including test blocks, test plugs and accessories cooperate with protection relays to provide online monitoring/testing for power system protection schemes. With the application of MD1701 series test blocks, operation security can be ensured. Moreover, monitoring, isolation and secondary injection testing can be simplified and quickly performed.

    Available models of MD1701 series products are listed below:

    MD1701-01/02

    MD1701 series products can be installed at secondary sides of CTs/VTs, or installed in the signal sampling circuit of IEDs in power system protection schemes. Shorting links of secondary sides of CTs, online monitoring/testing can be performed.

    MD1701-01 is a standard test block. Terminal 13 and terminal 14 of MD1701-01 can be used to connect the main DC auxiliary supply to the protection scheme or relay through this circuit.

    MD1701-02 is a special test block designed for use in busbar protection schemes. Terminal 13 and terminal 14 of MD1701- 02 can be used for CT connections.

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