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CT secondary voltage limiter

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dfdt

dfdt

Electrical
Joined
Sep 10, 2002
Messages
118
Location
AU
Often people specify to install some form of voltage clamping device to safe guard CT from bursting due to open circuiting during full load. Does any one know or have a record of malfunctions of such devices.
 
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Very often a spark-gap device is used. They are very reliable and relatively in-expensize...especially on HV CTs, compared to the cost of the overall unit.
 
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