Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Small and Medium Three-phase Asynchronous Motors

Transcription

1 Translated English of Chinese Standard: GB Translated by: Wayne Zheng et al. ICS F 01 NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA Replace GB Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Small and Medium Three-phase Asynchronous Motors Issued on: May 11, 2012 Implemented on: September 1, 2012 Jointly Issued by: the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; and the Standardization Administration of the People s Republic of China 1

2 Table of Contents Foreword... 3 Introduction Scope Normative and Quoted References Terms and Definitions Technical Requirements Test Method References and Original Chinese Documents

3 Foreword Clause 4.3 of this Standard is mandatory and others are recommendatory. This standard is drafted according to the rules specified in GB/T This standard replaces GB "Minimum Allowable Values of Energy Efficiency and the Energy Efficiency Grades for Small and Medium Three-phase Asynchronous Motors" and has the key changes as follows: The range of rated power was changed from 0.55kW~315kW in the original standard to 0.75kW~375kW; All-level energy efficiency indexes of motors were improved correspondingly; The test method is to measure according to Method B analysis method for measurement of input-output power loss in GB/T 1032; The efficiency requirements of motors under 75% rated output power were cancelled; The requirements of power factor in of the original standard were cancelled; The requirements of energy efficiency grade marking in Chapter 6 of the original standard were cancelled. This Standard was referred to IEC "Efficiency Classes of Single-speed, Three-phase, Cage-induction Motors". This standard is proposed by the Resource Conservation and Environmental Protection Division of National Development and Reform Commission. This standard is under the jurisdiction of the National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China (SAC/TC20). Drafting organizations of this standard: China National Institute of Standardization, Shanghai Electrical Apparatus Research Institute (Group Co., Ltd.), Nanyang Explosion Protection Group Co., Ltd, Nanyang Explosion Protected Electrical Apparatus Research Institute, International Copper Association (China), Beijing 3

4 B.J.Elecrtic Motor Co.,Ltd., Wuxi Huada Motors Co.,Ltd., Hebei Electric Motor Co., Ltd., ABB Shanghai Motors Co., Ltd., Yunnan Copper Science & Technology Develop Corporation Limited and China National Quality Supervisory and Test Centers for Small and Medium Electrical Machines. Chief drafting staffs of this standard: Zhao Yuejin, Li Xiuying, Yang Shengcheng, Wu guohua, Zhou Shoulian, Zhao Kai, Yang Cheng, Yang Xu, Li Meilan, Ni Lixin, Xu Li, Zhang Xin, Wang Gen. The previous editions of standard replaced by this standard are: GB ; GB

5 Introduction This revision of GB has referred to the international standard "Efficiency Classes of Single-speed, Three-phase, Cage-induction Motors" (IEC ), to enable the motor efficiency level of China meets the requirements of the international standard; the rated power and number of poles of motors specified in GB are kept consistent with those specified in IEC ; the efficiency values of Grade 3, Grade 2 and Grade 1 energy efficiency specified in GB are kept consistent with IE2, IE3 and the recommended table in Appendix A of IEC respectively. 5

6 NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA 中华人民共和国国家标准 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Small and Medium Three-phase Asynchronous Motors 中小型三相异步电动机能效限定值及能效等级 1 Scope This standard specifies the limited values of energy efficiency grade; allowable values of energy efficiency; target allowable values of energy efficiency; evaluating values of energy conservation; and test methods for small and medium three-phase asynchronous motors (hereinafter referred to as: motors). This standard is applicable to general-purpose motors or general-purpose explosion-proof motors of single-speed enclosed self fan cooled; N design; and continuous duty system with a voltage below 1000V; powered by a 50 Hz three-phase AC supply; the rated power is within a range of 0.55kW~315kW; and the number of poles is 2, 4 and 6. 2 Normative and Quoted References The following referenced documents are indispensable for the application of this document. For dated references, only the dated versions apply to this standard. For undated references, the latest edition of the normative document (including all the amendments) is applicable to this standard. 6

7 4.4 Target minimum allowable values of energy efficiency for motors Under the condition of rated power output, the target minimum allowable values of the energy efficiency of motor shall not be less than Grade 2 specified in Tables 1. The target minimum allowable values of energy efficiency for 7.5kW~375kW [motors] in Table 1 shall come into force after 4 years since the day of implementation of this standard; the target minimum allowable values of energy efficiency for below-7.5kw [motors] shall come into force after 5 years since the day of implementation of this standard, and shall substitute the requirements of Grade 3 in Table Evaluating values of energy conservation for motors Under the condition of rated power output, the evaluating value of energy conservation for motor shall not be less than Grade 2 specified in Tables 1. 5 Test Method The motor efficiency shall be measured according to Method B Loss Analysis of Measuring Input and Output Power, specified in GB/T

8 References and Original Chinese Documents [1] Minimum allowable values of energy efficiency and energy efficiency grades for small and medium three-phase asynchronous motors