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FDB Electrical EMGUARD Earth Continuity Monitor Has Multiple Settings |
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Saturday, 04 September 2010 16:34 |
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 The EMGUARD is a low priced, very compact EARTH CONTINUITY MONITOR, having a wide range of earth continuity impedance settings but is so designed that it is possible to set beyond the parameters specified by BS4444.
The ultra-low power circulating in the pilot earth/loop(0.06W) means that it can be readily incorporated into intrinsically safe systems.
As well as precise Impedance Increase detection, the EMGUARD will also detect a SHORT CIRCUIT between pilot and earth or open circuit of the earth conductor. The EMGUARD is fail-safe in operation, i.e. will trip on loss of energising supply and features auto reset (when system correct), remote test facility and LED status indication.
A major advantage of the EMGUARD is its high immunity against AC induced voltage in the Earth conductor (even where relatively tight limits are required on Earth continuity impedance increase) so making it possible to accurately monitor long cable runs (in excess of 1 Km) without muisance tripping.
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