Ct quick change assembly

Details Ct quick change assembly Ct quick change assembly

H - Electricity

01

H

306/283

H01H 71/12 (2006.01) H01H 9/34 (2006.01)

Patent

CA 1329406

28 CT QUICK CHANGE ASSEMBLY Abstract of the Invention A molded case circuit breaker is provided with a quick change current transformer assembly. The current transformer is used to sense overcurrent conditions and apply a signal to an electronic trip unit to trip the circuit breaker. The quick change assembly includes an insulated removable plate lo- cated adjacent an open cavity in the housing in which the current transformer is located. The current transformer is donut-type disposed about a load-side conductor located in a cavity in the housing rigidly fastened to the circuit breaker frame. In order to replace a current transformer, the insulated back- plate is removed. Next the load-side conductor is unfastened and removed from the circuit breaker hous- ing. The current transformer is then removed from the circuit breaker housing. In order to install a new current transformer, the steps are reversed.

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