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GB/T 12665-2017 English PDF (GB/T 12665-2008, GB/T 12665-1990)

GB/T 12665-2017_English: PDF (GB/T12665-2017)
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GB/T 12665-2017English145 Add to Cart 0--9 seconds. Auto-delivery Requirements of damp-heat testing of electrical machine for service in general environmental condition Valid GB/T 12665-2017
GB/T 12665-2008English70 Add to Cart 0--9 seconds. Auto-delivery Requirements of damp-heat testing of electrical machine for service in general environmental condition Obsolete GB/T 12665-2008
GB/T 12665-1990English279 Add to Cart 3 days [Need to translate] Requirements of damp-heat testing of electrical machine for service in general environmental condition Obsolete GB/T 12665-1990


BASIC DATA
Standard ID GB/T 12665-2017 (GB/T12665-2017)
Description (Translated English) Requirements of damp-heat testing of electrical machine for service in general environmental condition
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K26
Classification of International Standard 19.040
Word Count Estimation 11,125
Date of Issue 2017-11-01
Date of Implementation 2018-05-01
Older Standard (superseded by this standard) GB/T 12665-2008
Drafting Organization China Electric Apparatus Research Institute Co., Ltd., Zhejiang Lian Yi Motor Co., Ltd., Hangzhou Microelectronics Co., Ltd., Anhui University, Wei Kai Detection Technology Co., Ltd., Hangzhou Fusheng Electrical Co., Ltd., Guangdong Welling Motor Manufacturing Co., Ltd., Xiamen Fran home appliances Technology Co., Ltd., Xi'an Asahi Mai smart home appliances Technology Co., Ltd., Wenzhou Ang Wah New Energy Co., Ltd.
Administrative Organization National Rotating Electrical Standardization Technical Committee (SAC/TC 26)
Regulation (derived from) National Standard Announcement 2017 No. 29
Proposing organization China Electrical Equipment Industry Association
Issuing agency(ies) People's Republic of China General Administration of Quality Supervision, Inspection and Quarantine, China National Standardization Administration

BASIC DATA
Standard ID GB/T 12665-2008 (GB/T12665-2008)
Description (Translated English) Requirements of damp-heat testing of electrical machine for service in general environmental condition
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K20
Classification of International Standard 19.040
Word Count Estimation 10,149
Date of Issue 2008-06-13
Date of Implementation 2009-03-01
Older Standard (superseded by this standard) GB/T 12665-1990
Quoted Standard GB 755-2000; GB/T 2423.3-2006; GB/T 2423.4-1993
Drafting Organization China Electric Apparatus Research Institute
Administrative Organization National Standardization Technical Committee rotating electrical small power motor Standardization Technical Committee
Regulation (derived from) Announcement of Newly Approved National Standards No. 10 of 2008 (total 123)
Proposing organization China Electrical Equipment Industry Association
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the general environmental conditions in a rotating motor heat test method, technical requirements and inspection rules. This standard applies to all types of rotary motors. According to GB 755 regulations, the use of ambient relative humidity: the wettest month average maximum relative humidity of 90 %, while the monthly average minimum temperature not higher than 25��C motors shall comply with the provisions of the standard.

BASIC DATA
Standard ID GB/T 12665-1990 (GB/T12665-1990)
Description (Translated English) Requirements of damp-heat testing of electrical machine for service in general environmental condition
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K20
Classification of International Standard 19.04
Word Count Estimation 7,750
Date of Issue 1990/12/28
Date of Implementation 1991/10/1
Regulation (derived from) Announcement of Newly Approved National Standards No. 10, 2008 (No. 123 overall)
Proposing organization People Republic of China Ministry of Machinery and Electronics Industry
Issuing agency(ies) State Bureau of Technical Supervision


GB/T 12665-2017 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 19.040 K 26 Replacing GB/T 12665-2008 Requirements of damp-heat testing of electrical machine for service in general environmental condition ISSUED ON. NOVEMBER 1, 2017 IMPLEMENTED ON. MAY 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee. Table of Contents Foreword . 3  1 Scope .. 4  2 Normative references . 4  3 Technical requirements . 4  4 Test method . 7  5 Inspection rules .. 13  Foreword This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 12665-2008 "Requirements of damp-heat testing of electrical machine for service in general environmental condition". Compared with GB/T 12665-2008, the main technical changes in this Standard are as follows. - updated Clause 2 Normative references; - modified "voltage resistance" to "electrical strength" (see 3.3 of this Edition); - modified alternating humidity test method, added Method 2 (see 4.2 of this Edition); - added Figure 2; - deleted moisture-proof humidifier, added NOTE 1 (see 4.3 of Edition 2008); - added test method for leakage current after damp-heat (see 4.4 of this Edition). This Standard was proposed by China Electrical Appliance Industry Association. This Standard shall be under the jurisdiction of National Technical Committee on Rotary Motor of Standardization Administration of China (SAC/TC 26). The drafting organizations of this Standard. China Electric Apparatus Research Institute Co., Ltd., Zhejiang Lianyi Motor Co., Ltd., Hangzhou Weiguang Electronics Co., Ltd., Anhui University, Weikai Detection Technology Co., Ltd., Hangzhou Fusheng Electric Appliance Co., Ltd., Guangdong Welling Motor Manufacturing Co., Ltd., Zhejiang Jiuke Electric Co., Ltd., Xiamen Fran Appliances Technology Co., Ltd., Xi'an Xumai Intelligent Household Appliance Technology Co., Ltd., Wenzhou Anghua New Energy Co., Ltd. Main drafters of this Standard. Zheng Ziying, Huang Haiyan, Li Guoli, He Ping, Liu Mingtao, Zhang Yunchang, Zhang Bing, Wang Jianchi, Long Xinhua, Chen Feng, Bao Yikai. Versions of standard substituted by this Standard are. - GB/T 12665-1990, GB/T 12665-2008. Requirements of damp-heat testing of electrical machine for service in general environmental condition 1 Scope This Standard specifies the damp-heat test method, technical requirements and inspection rules of rotary electrical machine in general environmental condition. This Standard applies to all types of rotary electrical machines (except micro- control electrical machine, hereinafter referred to as the 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 - 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 the windings of the whole machine to the casing and the winding shall not be lower than the following values. a) for the electrical machine with rated voltage of 220V and above, determine according to equation (1). 4.1.3 Pre-treatment of test specimen Before the damp-heat test, the test specimen shall be placed in a hot and humid test chamber for preheating. The preheating temperature is 25°C ~ 35°C. From the time when the temperature of the damp-heat test chamber reaches 25°C, the time is not less than 8h. 4.2 Damp-heat test method According to GB/T 2423.4-2008, perform the alternating damp-heat test. High temperature is generally 40°C. According to the severity of the use of occasions, it can choose 55°C. There are two ways to reduce the temperature (see Figure 1 and Figure 2). Choose one of them to test. The conditions for each test cycle are shown in Figure 1 and Figure 2. Carry out 6 cycles in total. The entire machine or component (only for large electrical machine) shall meet the requirements of 3.2~3.5 after the damp-heat test specified in this sub-clause. Method 1 (see Figure 1) The temperature shall be reduced to 25°C±3°C within 3h~6h. At the temperature drop rate in the initial 1.5h, it shall be as shown in Figure 1, the temperature reaches 25°C ± 3°C within 3h ± 15min. The relative humidity in the first 15 minutes shall not be less than 90%, and the relative humidity in other time shall not be less than 95%. Method 2 (see Figure 2) The temperature shall be reduced to 25°C±3°C within 3h~6h. But there is no additional requirement for the first 1.5h in Method 1. The relative humidity shall not be less than 80%. NOTE. The selection of Method 1 and Method 2 can refer to GB/T 2423.4-2008. According to the situation of motor use, the product can also be subject according to GB/T 2423.3-2006 to the constant damp-heat test. A constant damp-heat test is conducted under the conditions of a test temperature of 40°C ± 2°C, a humidity of 90%~95%, and a duration of 48h. voltage electrical machine or components can be removed from the test chamber for testing, but shall be completed within 6h. If there is any doubt about the insulation breakdown, it is permissible to retest immediately without changing the test state. The test voltage is still in accordance with the provisions of Clause 3. 4.6 Running performance check The check of running performance of the electrical machine shall be completed within 48h after the test specimen is removed from the chamber. The check of running performance shall be carried out in the way of power running. The performance requirements of electrical machine are specified by various professional product standards. 5 Inspection rules 5.1 General The damp-heat test shall be carried out when the product design stereotype or design, process and material used changes affect the damp-heat resistance of the product. Whether the product is subjected to regular sampling test and its deadline are regulated by various professional product standards. 5.2 Sampling method of sample The damp-heat test of the electrical machine allows a representative product to be sampled by a random sampling method in a series of products of the same structure, the same process, and the same material. If the test is qualified, the products with the same structure, the same process, and the same material (including the derived series and the same product with the same high range of the center) are all qualified. 5.3 Number of test specimen For the electrical machine for damp-heat test, the number of parts and components shall follow the provisions. - for the electrical machine with center height of 315mm and below, test 2 pieces each time; - for the large electrical machine with center height above 315mm, test 1 piece each time; - for large AC electrical machine with center height above 630mm and large DC electrical machine with armature outer diameter of 990mm or more, ......


GB/T 12665-2008 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 19.040 K 20 Replacing GB/T 12665-1990 Requirements of damp-heat testing of electrical machine for service in general environmental condition ISSUED ON. JUNE 13, 2008 IMPLEMENTED ON. MARCH 01, 2009 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3  1  Scope ... 4  2  Normative References ... 4  3  Test method ... 4  4  Technical requirements ... 7  5  Inspection rules ... 10  Foreword This Standard replaces GB/T 12665-1990 Requirements of damp-heat testing of electrical machine for service in general environmental condition. Compared with GB/T 12665-1990, the main changes of this Standard are as follows. — Update the reference standards; — Add the severity condition 55°C to damp-heat test in 3.2; — Update figure 1; — Add the article “3.4 Measurement of leakage current”; — Change the “alternate damp-heat test” to be “damp-heat test” in 4.1. This Standard was proposed by China Electrical Equipment Industrial Association (CEEIA). This Standard shall be under the jurisdiction of Subcommittee 1 of Low-power Electric Machine of National Technical Committee 26 on Electric Rotating Machinery of Standardization Administration of China. Drafting organizations of this Standard. China National Electric Apparatus Research Institute (CEI), and Hengdian Group Lianyi Electrical Machine Co., Ltd. Main drafting staffs of this Standard. Yan Jinglian, Liao Guoqing, and Shen Tujun. This Standard replaces the following historical edition. — GB/T 12665-1990. Requirements of damp-heat testing of electrical machine for service in general environmental condition 1 Scope This Standard specifies the damp heat test method, technical requirements and inspection rules of the rotating electrical machine for service in general environmental condition. This Standard is applicable to all kinds of rotating electrical machines (except mini-type control machine, hereinafter referred to as electrical machine). According to provisions of GB 755, the relative humidity of service environment is. the average maximum relative humidity in the wettest month is 90%; and the average lowest temperature in that month is not higher than 25°C; it shall meet the requirements of this Standard. 2 Normative References The articles contained in the following documents have become part of this Standard when they are quoted herein. For the dated documents so quoted, all the modifications (excluding corrections) or revisions made thereafter shall not be applicable to this Standard. For the undated documents so quoted, the latest editions shall be applicable to this Standard. GB 755-2000 Rotating electrical machines - Rating and performance (idt IEC 60034-1.1996) GB/T 2423.3-2006 Environmental testing for electric and electronic products - Part 2. Testing method test Cab. Damp heat Steady state (idt IEC 60068-2-78.2001) GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products-Test Db. Damp heat, cyclic (eqv IEC 60068-2-78.1985) 3 Test method 3.1 Preparation before the test 3.1.1 Test equipment and instruments Damp heat test chamber shall meet the requirements in Chapter 3 of GB/T 2423.4-1993. The voltage class of megameter for measuring insulation resistance shall meet the provisions in Table 1. 3.4 Leakage current measurement After damp heat test, the leakage current of the electrical machine shall comply with the provisions of the relevant product standards. 3.5 Withstand-voltage test After measuring insulation resistance and leakage current of test samples, the insulation withstand-voltage test shall be immediately carried out, which shall be generally in the test chamber; when conditions do not permit, the high-voltage electrical machines or components and parts can be removed from the test chamber for testing, however, it must be completed within 6 h. If there is doubt on the insulation breakdown, it allows re-testing immediately without changing the test status, and the test voltage shall be still based on the provisions of Chapter 4. 3.6 Operating performance inspection The inspection on the operating performance of electrical machine shall be completed within 48h after being removed from the test chamber; the operating performance inspection shall be carried out in energizing and operation; and the performance requirements of electrical machine shall be specified by the various professional product standards. 4 Technical requirements 4.1 Insulation performance The complete electrical machine or components and parts (only for large electrical machines) shall meet the following conditions after damp heat test specified in Article 3.2. 4.1.1 The insulation requirements of complete electrical machine after damp heat test The complete electrical machine shall meet the following requirements after damp heat test. a) The insulation resistance of the electrical machine windings against shell and the windings shall not be less than the following values. The electrical machine with the rated voltage of 220 V and above shall be determined according to formula (1). R P  ... (1) Where. R — the insulation resistance of the electrical machine windings, in megaohms The middle-large electrical machine can be installed with anti-damp heater; the heater power shall be able to make the temperature inside the shell 5 °C higher than room temperature, and ensure that the heating temperature cannot cause its nearby insulation more than the allowable temperature of this insulation. The damp heat test can not be carried out on the electrical machine installed with heater. 4.4 Others When the constant damp heat test is carried out on the relevant professional products according to 3.2, it shall be according to the specified corresponding test cycles and the technical requirements after damp heat test, but shall not be less than the requirements specified in this Standard. The damp heat test cannot be carried out on the large steam turbine generator and hydraulic generator and whether to install heater shall be consulted and determined by the user with the manufacturer. 5 Inspection rules 5.1 Overview Damp heat test shall be carried out under the following conditions. When the damp heat resistance performance affecting product is changed by the product design finalizing or design, process and materials are used. Whether to carry out regular sampling test on products and its deadline shall be specified by various professional product standards. 5.2 Sampling method The damp heat test of the electrical machine allows to sample the representative products for testing in a random sampling method in the same series of products with same-structure, same-process and same-material; if passing the test, it shall be accepted that the products with same-structure, same-process and same-materials (including the derived series and the similar products with the same center height range) are qualified. 5.3 Number of test samples For the electrical machine under damp heat test, the number of components and parts shall be according to the following provisions. For the electrical machine with the center height of 315 mm and below, 2 sets shall be tested for each time. For the medium and large electrical machine with the center height of above 315 mm, 1 set shall be tested for each time. ......

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