TAMPERED PROOF EXTERNAL TEST CONTACT ARRANGEMENT FOR WATTHOUR METER

摘要

A watthour meter of the self-contained detachable type has a protected meter testing arrangement. An isolated external test contact and an internal terminal blade connector are independently connected to a common terminal end of the meter voltage winding. The connector is manually disconnectable for testing the meter through the external test contact in an "open-link" watthour meter testing method.