Standard No.:	GB/T 12665-2017
Chinese Name:	电机在一般环境条件下使用的湿热试验要求
English Name:	Requirements of damp-heat testing of electrical machine for service in general environmental condition
Professional Classification:	K26 Special machine
ICS Classification:	19.040
Issued by:
Issued on:	2017-11-01
Implemented on:	2018-05-01
Status:	VALID
Replace:	GB/T12665-2008 Requirements of damp-heat testing of electrical machine for service in general environmental condition
Language:	English
File Format:	PDF
Word Count:	8000 words
Price(USD):	240 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies the methods, technical requirements and inspection rules for damp-heat testing of rotating electrical machine for service in general environmental condition.

This standard is applicable to various rotating electrical machines (excluding micro-control electrical machine, hereafter referred to as electrical machine).

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 755 Rotating Electrical Machines C Rating and Performance
GB/T 2423.3-2006 Environmental Testing for Electric and Electronic Products - Part 2: Testing Method Test Cab: Damp Heat Steady State
GB/T 2423.4-2008 Environmental Testing for Electric and Electronic Products - Part 2: Test Method - Test Db: Damp Heat, Cyclic (12h+12h Cycle)
GB/T 12113-2003 Methods of Measurement of Touch Current and Protective Conductor Current

3 Technical Requirements

3.1 Insulation resistance

3.1.1 The insulation resistance value between complete electrical machine winding against enclosure and that between windings shall not be less than the following values:

a) For the electrical machine with rated voltage of 220V or above, it shall be determined according to Formula (1):