Standard No.:	JB 3956-1985
English Name:	Flameproof Feeder Switch for Coal Mine
Chinese Name:	矿用隔爆型馈电开关
Chinese Classification:	K35    Explosion-proof electric apparatus
Professional Classification:	JB    Professional Standard - Machinery
Source Content Issued by:	Ministry of Machine Building
Issued on:	1985-3-13
Implemented on:	1985-8-1
Status:	abolished
Abolished on:	2017-05-12
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1~3 business day

本标准适用于矿用隔爆型馈电开关(以下简称馈电开关)。该馈电开关主要用于煤矿井下，在交流50Hz，额定电压1140V及以下，额定电流500A及以下的线路中，作为供电系统的总开关，分支开关，也可作为大容量电动机不频繁起动之用。当线路中出现过载或短路故障时，馈电开关能根据要求自动地切断电路。同时，馈电开关可与漏电继电器配合使用或自体装设漏电保护单元，对系统中的漏电故障实现保护。