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Medium voltage switchgear with front accessibility of current transformers mounted external to a rear of a circuit breaker compartment
专利权人:
ABB SCHWEIZ AG
发明人:
Motta Stefano
申请号:
US201514589105
公开号:
US9620940(B2)
申请日:
2015.01.05
申请国别(地区):
美国
年份:
2017
代理人:
Manelli Selter PLLC `Stemberger Edward J.
摘要:
A switchgear includes a circuit breaker housing defining a circuit breaker compartment. A bushing has first and second portions and extends through an opening in a rear wall 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. A current transformer is mounted on the second portion of the bushing. A fastener structure 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.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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