MEDIUM VOLTAGE SWITCHGEAR WITH FRONT ACCESSIBILITY OF CURRENT TRANSFORMERS MOUNTED EXTERNAL TO A REAR OF A CIRCUIT BREAKER COMPARTMENT

摘要

A switchgear includes a circuit breaker housing defining a circuit breaker compartment. A bushing (22') has first and second portions and extends through an opening (42) in a rear wall (31) of the housing so that the first portion is disposed in the circuit breaker compartment and the second portion is disposed beyond the exterior of the rear wall and external of the circuit breaker compartment. The bushing has a hollow primary contact (50). A current transformer (26') is mounted on the second portion of the bushing. A fastener structure (40) has a portion that extends through the hollow primary contact. The fastener structure couples the primary contact to a busbar in a removable manner. When the fastener structure is decoupled from the primary contact, the bushing and the at least one current transform can be accessed from the front of the housing and moved through the opening in the rear wall, for maintenance.