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SURGE PROTECTIVE DEVICE AND SURGE PROTECTIVE SYSTEM

  • US 20170117700A1
  • Filed: 10/20/2016
  • Published: 04/27/2017
  • Est. Priority Date: 10/26/2015
  • Status: Active Grant
First Claim
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1. A surge protective device comprising:

  • a jack having an external line side terminal to which an external line configured with a communication line or a control line is connected, an equipment side terminal to which equipment to be protected is connected, a first connection terminal, a second connection terminal, and a juncture terminal connected to the first connection terminal; and

    a plug having a third connection terminal detachably connected to the first connection terminal, a fourth connection terminal detachably connected to the second connection terminal, a protection circuit which discharges lightning surge intruding from the external line side terminal or the equipment side terminal through the second connection terminal and the fourth connection terminal to a ground side to protect the equipment to be protected, a degradation detecting unit which detects intrusion of the lighting surge and detects a degradation state of the protection circuit by comparing a history of the lightning surge with a reference value, and a display unit which displays a detection result of the degradation detecting unit;

    wherein, when a plurality of the surge protective devices are installed together, a juncture plug which detachably connects between the adjacent juncture terminals in the adjacent surge protective devices is provided, andthe detection result of the degradation detecting unit is output through the third connection terminal, the first connection terminal, the juncture terminal and the juncture plug.

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