Standard No.:	GB/T 18481-2001
English Name:	Power quality--Temporary and transient overvoltages
Chinese Name:	电能质量 暂时过电压和瞬态过电压
Chinese Classification:	F20
Professional Classification:	GB    National Standard
Issued by:	AQSIQ
Issued on:	2001-01-01
Implemented on:	2002-4-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	170.0
Delivery:	via email in 1 business day

1.1 This standard specifies the requirements of temporary and transient overvoltages in AC power system which act on electrical equipment, insulation level of electrical equipment and overvoltage protection method. 1.2 In case issues of power quality relevant to overvoltage are involved, implementation shall be carried out according to those specified in the standard, in combination with power grid and equipment characteristic as well as service environment and by reference to relevant professional standards. 1.3 This standard is not applicable to overvoltage caused by static electricity, touching high voltage system and steady-state waveform distortion (harmonic wave).

Foreword i 1 Scope 2 Normative References 3 Terminologies and Definitions 4 Division of System (Equipment) by Highest Voltage Um 5 Overvoltage Acting on Electrical Equipment and Its Requirements Appendix A (Normative) Insulation Level of Electrical Equipment Appendix B (Informative) Overvoltage Protection of AC Electrical Installations Appendix C (Informative) References