Standard No.:	TB/T 1849-1987
English Name:	Insulation Clearance for Contact Network in Tunnel
Chinese Name:	隧道内接触网绝缘间隙
Chinese Classification:	S32    Braking system
Professional Classification:	TB    Professional Standard - Railway Transport
Issued by:	Ministry of Railways
Issued on:	1988-1-16
Implemented on:	1988-7-1
Status:	abolished
Abolished on:	2019-09-16
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	60.00
Delivery:	via email in 1~3 business day

本标准适用于工频单相25kV电气化铁路隧道内接触网的绝缘间隙，海拔不超过1000m,一般环境。在特别潮湿及严重污秽（如近海、蒸汽机车繁忙区段、严重工业污染区、漏水挂冰）等的恶劣环境，采用本标准时静态间隙不得低于正常值。