GB 21518-2022 PDF EnglishUS$110.00 · In stock · Download in 9 seconds
GB 21518-2022: Minimum allowable values of energy efficiency and energy efficiency grades for AC contactors Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB 21518: Historical versions
GB 21518-2022: Minimum allowable values of energy efficiency and energy efficiency grades for AC contactors---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB21518-2022 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 27.010 CCS F 01 Replacing GB 21518-2008 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for AC Contactors ISSUED ON: DECEMBER 29, 2022 IMPLEMENTED ON: JANUARY 1, 2024 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 4 4 Energy Efficiency Grades ... 5 5 Technical Requirements ... 6 6 Test and Calculation Methods ... 6 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for AC Contactors1 ScopeThis document specifies the energy efficiency grades, minimum allowable values of energy efficiency, sampling, test and calculation methods for AC contactors (hereinafter referred to as contactors). This document is applicable to three-pole electromechanical, direct-acting integral contactors with a rated frequency of 50 Hz, a rated operating voltage of the main circuit of 1,000 V and below, a rated operating current of 6 A ~ 630 A, a rated control power supply voltage of the contactors of AC 440 V and below, and an application category of AC-3. This document does not apply to household and similar-purpose contactors with external power-saving devices and semi-conductor contactors (solid-state contactors). NOTE: the “direct-acting” type described in this document refers to products in which both the contact system and the electromagnetic system are direct-acting.2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 14048.1 (TRANSLATOR NOTE: it should be GB 14048.1) Low-voltage Switchgear and Controlgear - Part 1: General Rules GB/T 14048.4 Low-voltage Switchgear and Controlgear - Part 4-1: Contactors and Motor- starters - Electromechanical Contactors and Motor-starters (including motor protector)3 Terms and DefinitionsThe terms and definitions defined in GB 14048.1 and GB/T 14048.4, and the following terms and definitions are applicable to this document. 3.1 holding power Holding power refers to the apparent power consumed when the contacts of the main circuit of the contactor remain in the pull-in state.5 Technical RequirementsThe minimum allowable values of energy efficiency of the AC contactors are Grade-3 energy efficiency in Table 1.6 Test and Calculation Methods6.1 Test Methods 6.1.1 When contactors of same frame size have different rated control power supply voltage (Us) and different main circuit rated operating current (Ie), the test shall be carried out in accordance with the following mode: a) When the number of rated control power supply voltage specifications is less than 5, the contactors with the maximum rated control power supply voltage and the minimum rated operating current shall be selected for the test; b) When the number of rated control power supply voltage specifications is greater than or equal to 5, 5 samples shall be selected, one of which is the minimum rated control power supply voltage, one is the maximum rated control power supply voltage, and another three rated control power supply voltage specifications that the manufacturer considers to have a larger holding power. For each voltage specification, select the contactor with the minimum rated operating current for the test. 6.1.2 When the rated control power supply voltage of the contactors of same frame size is in a range, the test shall be carried out in accordance with the following mode. In addition, take the maximum value as the holding power of the wide voltage specification. a) When the upper limit of the rated control power supply voltage range is twice the lower limit, or above, respectively carry out the test at the upper limit and the lower limit of the voltage range; b) When the upper limit of the rated control power supply voltage range is less than twice the lower limit, carry out the test at the upper limit of the voltage range. 6.1.3 The accuracy of the voltmeter and ammeter for the measurement shall be Grade 0.2 or above. 6.1.4 The test shall be carried out at an ambient temperature of 23 C 3 C, and the test power supply shall have a sufficient capacity. During the test, there shall be no load in its main circuit or control power circuit. Apply the rated control power supply voltage to the input terminal of the contactor control circuit, and measure the holding power when the contactor is closed. See Figure 1 for the wiring diagram of the contactor test. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 21518-2022 be delivered?Answer: The full copy PDF of English version of GB 21518-2022 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 21518-2022_English with my colleagues?Answer: Yes. 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