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Device for detecting failure of one of several parallel lamps, especially street lights, detects lamp failure from different current in forward and return line of connecting cable at feed point
Device for detecting failure of one of several parallel lamps, especially street lights, detects lamp failure from different current in forward and return line of connecting cable at feed point
The device detects a failure of a lamp from a different current in the forward and return line of the connecting cable at the feed point, e.g. an electrical cabinet. An auxiliary current is generated in one of the lines at the lamp position by the failure of the lamp.
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