Standard No.:	GB/T 755.2-2003
Chinese Name:	旋转电机(牵引电机除外)确定损耗和效率的试验方法
English Name:	Methods for determining losses and efficiency of rotating electrical machinery from tests(excluding machines for traction vehicles)
Professional Classification:	K20 Electric rotating machinery in general
Professional Classification:	GB National Standard
ICS Classification:	29.160.99 Other standards related to rotating machinery
Issued by:
Issued on:	2003-08-06
Implemented on:	2004-01-01
Status:
Language:	English
File Format:	PDF
Word Count:
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1 Scope

This part applies to DC machines and to AC synchronous and induction machines of all sizes within the scope of national standard GB 755-2000. The principles can, however, be applied to other types of machines such as rotary convertors, AC commutator motors and single-phase induction motors for which other methods of determining losses are generally used.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this part are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB 755-2000 Rotating Electrical Machines - Rating and Performance (idt IEC 60034-1:1996)
GB/T 2900.25-1994 Electrotechnical Terminology - Rotating Electrical Machines (neq IEC 50 (411) 19845)
GB/T 5321-1985 Measurement of Loss and Efficiency for Large AC Electrical Machines by the Calorimetric Method (neq IEC 60034-2A: 1974)
GB/T 7676.1-1998 Direct Acting Indicating Analogue Electrical Measuring Instruments and Their Accessories - Part 1: Definition and General Requirements Common to All Parts (idt IEC 51-1: 1984)
IEC 34-17: 1992 Guide for Application of Cage Induction Motors when Fed from Converters

3 General

3.1 Object
This part is intended to establish methods of determining efficiencies from tests, and also to specify methods of obtaining particular losses when these are required for other purposes.