CT secondary voltage limiter

[dfdt]

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.

 

[scottf]

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.

 

[jghrist]

See thread thread238-31194