ZERO PHASE-SEQUENCE CURRENT TRANSFORMER ARRANGEMENT STRUCTURE FOR CIRCUIT BREAKER

摘要

PROBLEM TO BE SOLVED: To provide a zero phase-sequence current transformer arrangement structure for a circuit breaker facilitating conductor penetrating work to a zero phase-sequence current transformer, and capable of making compaction in the width direction of an apparatus body. SOLUTION: The zero phase-sequence current transformer arrangement structure for the circuit breaker is for arranging a zero phase-sequence current transformer ZCT with a larger dimension in the lateral face direction, perpendicular to the thickness direction than an inner dimension between a first side case 1A and a second side case 1B in a make and break mechanism 5 arrangement position of the circuit breaker. Through-holes 98 and 98 are provided in the first side case and the second side case, and the through-holes are faced to side faces of the zero phase-sequence current transformer.