Standard No.:	GB/T 7449-1987
English Name:	Guide to the lightning impulse and switching impulse testing of power transformers and reactors
Chinese Name:	电力变压器和电抗器的雷电冲击和操作冲击试验导则
Chinese Classification:	K04    Basic standards and general methods
Professional Classification:	GB    National Standard
Issued by:	National Bureau of Standards
Issued on:	1987-03-16
Implemented on:	1987-10-1
Status:	superseded
Superseded by:	GB/T 1094.4-2005 Power transformers - Part 4: Guide to the lightning impulse and switching impulse testing - Power transformers and reactors
Superseded on:	2006-4-1
Language:	English
File Format:	PDF
Word Count:	14500 words
Price(USD):	430.00
Delivery:	via email in 1~5 business day

本导则的目的是对电力变压器的雷电冲击和操作冲击试验的现行方法提供一个准则并作一些说明，以作为GB1094.3-1985的补充。本导则的内容通常也适用于电抗器，至于电磁式电压互感器也可以参照执行。本导则包括试验电路、接线、波形及试验时接地、故障检测方法、试验程序、测量技术以及试验结果分析等方面。本导则所述的一切试验技术，尽可能采用GB 311.2~311.6-83中所规定的内容。