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Product ID: DD Isolator Ta Wei disconnector is an equipment which automatically cuts the arrester from the distribution line whenever it becomes damaged in service owing to direct stroke of lightning surge, thus protecting the distribution line from eventual stoppage and at the same time indicating the arrester being out of service as can be seen from the ground. The resistance coil has a direct series connection with element, to which the by-pass gap is installed in parallel. All of these parts are stored in the completely sealed plastic receptacle. Impulse current and follow current flow through the by-pass gap while the arrester is operating under the normal condition. But, when the arrester becomes damaged in service, the grounding current will flow through the resistance coil and the carbon element, which leads to gasfication of the carbon element, destroying the plastic housing with the subsequent cutting off the ground lead of arrester.
Before Operation After Operation
Installation :
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