GB/T 21967-2020 English PDFUS$369.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21967-2020: YBZE and YBZSE series flameproof electromagnetic braking three-phase induction motors for crane application. Technical specification Status: Valid GB/T 21967: Historical versions
Basic dataStandard ID: GB/T 21967-2020 (GB/T21967-2020)Description (Translated English): YBZE and YBZSE series flameproof electromagnetic braking three-phase induction motors for crane application. Technical specification Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K26 Classification of International Standard: 29.160.30 Word Count Estimation: 20,288 Date of Issue: 2020-11-19 Date of Implementation: 2021-06-01 Older Standard (superseded by this standard): GB/T 21967-2008 Quoted Standard: GB/T 191; GB/T 755; GB/T 756; GB/T 757; GB/T 997; GB/T 1032; GB/T 1096; GB/T 1958; GB/T 1971; GB/T 1993; GB/T 2423.4; GB 3836.1-2010; GB 3836.2-2010; GB/T 4772.1; GB/T 4942.1; GB/T 10068; GB/T 10069.1; GB/T 10069.3; GB/T 12351; GB 20294; GB/T 21975 Regulation (derived from): National Standard Announcement No. 26 of 2020 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration Summary: This standard specifies the type, basic parameters and dimensions, technical requirements, test methods, inspection rules, signs, packaging and warranty period of YBZE and YBZSE series of flameproof electromagnetic brake three-phase asynchronous motors for lifting. This standard applies to all kinds of explosion-proof electromagnetic brake three-phase asynchronous motors (frame size 112��250) (hereinafter referred to as "motors") for the power transmission of various hoisting machinery, and all series of motors derived from this series of motors Can be implemented by reference. GB/T 21967-2020: YBZE and YBZSE series flameproof electromagnetic braking three-phase induction motors for crane application. Technical specification---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. (YBZE, YBZSE series of explosion-proof electromagnetic brake three-phase asynchronous motors for hoisting technical conditions) ICS 29.160.30 K26 National Standards of People's Republic of China Replace GB/T 21967-2008 YBZE, YBZSE series of explosion-proof electromagnetic brakes for lifting Three-phase asynchronous motor technical conditions 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee Table of contentsPreface Ⅲ 1 Scope 1 2 Normative references 1 3 Type, basic parameters and dimensions 2 4 Technical requirements 8 5 Test method 11 6 Inspection rules 12 7 Marking, packaging and warranty period 14 Appendix A (Normative Appendix) Measurement of Static Braking Torque 16 Appendix B (Normative Appendix) Determination of Braking Time 17ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 21967-2008 "YBZE, YBZSE series of explosion-proof electromagnetic brake three-phase asynchronous motor technology for lifting Conditions'', compared with GB/T 21967-2008, the main technical changes are as follows. ---Added references to GB/T 756, GB/T 1958, GB/T 1971, GB/T 22719.1, GB/T 22719.2, GB/T 21975, Deleted GB/T 13306-1991, JB/T 9615.1-2000, JB/T 9615.2-2000, JB/T 56105-1999 (see Chapter 2, Chapter 2 of the.2008 edition); ---Added motor model and example description (see 3.1); --- The rated static braking torque in Table 2 is deleted, and its value is determined according to the technical agreement between the two parties (see Table 2 in the.2008 edition); ---Modified the D1 size of table 3, table 4, table 5 of frame size 180L (see table 3~table 5, table 3~table 5 of.2008 edition); ---Modified the K basic size and position tolerance of table 3 for frame numbers 160M~225M, and table 4 for frame numbers 112M~225M S basic size and position tolerance, table 5 S basic size and position tolerance of frame size 112M~250M (see table 3~ Table 5, Table 3~Table 5 of the.2008 edition); --- Modify the key width tolerance of the shaft extension key in Table 6 (see Table 6, Table 6 of the.2008 edition); ---The requirement for the maximum surface temperature of the motor housing has been increased (see 4.10); ---Added "The deviation of any one phase of the DC resistance of the motor three-phase stator winding in the actual cold state from the three-phase average value should not exceed ±2% of the average value. "(See 4.11); ---Added "At 40℃ ambient temperature, the cold insulation resistance value of the motor stator winding should not be less than 5MΩ." (see 4.12); --- Added "1s test can also be used instead, but the test voltage value should be 120% of the specified value." (see 4.14); ---Modified the requirements of the alternating damp heat test (see 4.18, 4.17 of the.2008 edition); --- Deleted the regulations on the unevenness of the air gap of the motor, and correspondingly canceled the inspection of the unevenness of the air gap (see.2008 edition 4.18); ---Modified the motor vibration and noise requirements (see 4.19 and 4.20, 4.20 and 4.21 in the.2008 edition); ---Added the requirements for the direction of rotation of the motor (see 4.27); ---Added the motor appearance and assembly quality requirements (see 4.30); ---Added the test of the motor project (see 4.31); --- Change Chapter 6 into a table form (see Chapter 6, Chapter 5 of the.2008 edition); --- Change the outgoing terminal mark to a table form (see 7.3, 6.3 of the.2008 edition). This standard was proposed by China Electrical Equipment Industry Association. This standard is under the jurisdiction of the National Standardization Technical Committee for Rotating Electrical Machines (SAC/TC26). Drafting organizations of this standard. Jiamusi Explosion-proof Motor Research Institute, Jiamusi Electric Co., Ltd., Wuxi Xindali Electric Co., Ltd. Xidongyuan Motor Co., Ltd., Shandong Zotye Explosion-proof Motor Co., Ltd., Anhui Province Motor Products and Parts Quality Supervision and Inspection Center, Wuxi Hongtai Electric Co., Ltd. The main drafters of this standard. Wang Weiyue, Chang Yanqin, Xu Min, Wang Bingheng, Shao Guojun, Zhao Yunfeng, Xue Ronghui, Wang Liping. The previous versions of the standard replaced by this standard are as follows. ---GB/T 21967-2008. YBZE, YBZSE series of explosion-proof electromagnetic brakes for lifting Three-phase asynchronous motor technical conditions1 ScopeThis standard specifies the type, basic parameters and dimensions of YBZE and YBZSE series of explosion-proof electromagnetic brake three-phase asynchronous motors for lifting Dimensions, technical requirements, test methods, inspection rules, signs, packaging and warranty period. This standard is applicable to explosion-proof electromagnetic brake three-phase asynchronous motors (frame size 112~250) (below Referred to as "motor"), all series of motors derived from this series of motors can be implemented by reference.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 191 Packaging, Storage and Transportation Graphic Mark GB/T 755 Rotating motor rating and performance GB/T 756 Cylindrical shaft extension of rotating motor GB/T 757 Conical shaft extension of rotating electric machine GB/T 997 Classification of structure type, installation type and junction box position of rotating electric machine (IM code) GB/T 1032 Three-phase asynchronous motor test method GB/T 1096 Ordinary flat key GB/T 1958 Product Geometric Technical Specification (GPS) Geometric Tolerance Testing and Verification GB/T 1971 Rotating motor wire end marking and direction of rotation GB/T 1993 Rotating electric machine cooling method GB/T 2423.4 Environmental testing of electrical and electronic products Part 2.Test method Test Db Alternating damp heat (12h 12h cycle ring) GB 3836.1-2010 Explosive Atmosphere Part 1.General Requirements for Equipment GB 3836.2-2010 Explosive atmosphere Part 2.Equipment protected by flameproof enclosure "d" GB/T 4772.1 Rotating electric machine size and output power rating Part 1.Frame size 56~400 and flange number 55~1080 GB/T 4942.1 Degree of protection of the overall structure of rotating electrical machines (IP code) Classification GB/T 10068 The measurement, evaluation and limit of mechanical vibration of motors with a shaft center height of 56mm and above GB/T 10069.1 Rotating electrical machine noise measurement method and limit value Part 1.Rotating electrical machine noise measurement method GB/T 10069.3 Rotating electrical machinery noise measurement method and limit Part 3.Noise limit GB/T 12351 Environmental technical requirements for tropical rotating electrical machines GB 20294 Safety requirements for explosion-proof crane metallurgy and shielded motors GB/T 21975 Three-phase asynchronous motor reliability test method for lifting and metallurgy GB/T 22719.1 Inter-turn insulation of scattered windings of AC low-voltage motors Part 1.Test methods GB/T 22719.2 Inter-turn insulation of scattered windings of AC low-voltage motors Part 2.Test limits ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21967-2020_English be delivered?Answer: Upon your order, we will start to translate GB/T 21967-2020_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 21967-2020?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21967-2020 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
