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GB 17625.2-2007: [GB/T 17625.2-2007] Electromagnetic compatibility (EMC) -- Limits -- Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional conn 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 17625.2: Historical versions
Similar standardsGB 17625.2-2007: [GB/T 17625.2-2007] Electromagnetic compatibility (EMC) -- Limits -- Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional conn---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/GB17625.2-2007 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 33.100 L 06 GB 17625.2-2007 / IEC 61000-3-3.2005 Replacing GB 17625.2-1999 Electromagnetic compatibility (EMC) - Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection (IEC 61000-3-3.2005, IDT) This standard was converted to GB/T 17625.2-2007, based on [2017] No.7 Announcement Issued on. APRIL 30, 2007 Implemented on. JANUARY 01, 2008 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 ContentsForeword... 3 1 Scope... 8 2 Normative references... 8 3 Terms and definitions... 9 4 Assessment of voltage changes, voltage fluctuations and flicker... 12 5 Limits... 15 6 Test conditions... 16 Annex A (normative) Application of limits and type test conditions for specific equipment... 24 Annex B (normative) Test conditions and procedures for measuring dmax voltage changes caused by manual switching... 33ForewordAll the technical contents of this Part are mandatory. This Part is identical to IEC 61000-3-3.2005. IEC 61000 is published in separate parts according to the following structure. Part 1.General General considerations (introduction, fundamental principles) Definitions, terminology Part 2.Environment Description of the environment Classification of the environment Compatibility levels Part 3.Limits Emission limits Immunity limits (in so far as they do not fall under the responsibility of product committees) Part 4.Testing and measurement techniques Measurement techniques Testing techniques Part 5.Installation and mitigation guidelines Installation guidelines Mitigation methods and devices Part 9.Miscellaneous Each part is further subdivided into sections which are to be published either as International Standards or as Technical Reports. These standards and reports will be published in chronological order and numbered accordingly. This Part is identical to IEC 61000-3-3.2005 “Electromagnetic compatibility (EMC) - Part 3-3.Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional connection”. This Part is a Product Family Standard. The limits in this Part relate to the voltage changes experienced by consumers connected at the interface between the public supply low-voltage network and the equipment user’s installation. Consequently, if the actual impedance of the supply at the supply terminals of equipment connected within the equipment user’s installation exceeds the test impedance, it is possible that supply disturbance exceeding the limits may occur. “Electromagnetic compatibility (EMC) - Limits” consists of the following parts - GB 17625.1-2003 Electromagnetic compatibility - Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase) - GB 17625.2-2007 Electromagnetic compatibility limits (EMC) - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional connection - GB 17625.3-2000 Electromagnetic compatibility - Limits - Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 16 A This Part is Part 2 of “Electromagnetic compatibility (EMC) - Limits”. This Part replaces GB 17625.2-1999 “Electromagnetic compatibility limits - Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with rated current ≤ 16 A” from the date of implementation. Compared with GB 17625.2-1999, the main modifications are as follows. - MODIFY the standard name, to be consistent with the standard name of IEC 61000-3-3; - In clause 1 “Scope”, MODIFY “This Part is applicable to electrical and electronic equipment having an input current not greater than 16 A per phase, intended to be connected to public low-voltage distribution systems of between 220 V and 250 V line to neutral at 50 Hz.” TO “This Part is applicable to electrical and electronic equipment having an input current equal to or less than 16 A per phase, intended to be connected to public low-voltage distribution systems of between 220 V and 250 V line to neutral at 50 Hz, and not subject to conditional connection.” ADD “Equipment which does not comply with the limits of this Part when tested with the reference impedance Zref of 6.4, and which therefore cannot be declared compliant with this part, may be retested or evaluated to show conformity with IEC 61000-3-11.IEC 61000-3-11 is applicable to equipment with rated input current ≤ 75 A per phase and subject to conditional connection”. DELETE “For special equipment not widely used and designed and those does not meet the requirements (limits) of this Part, the consent of the power supply department shall be obtained before being connected to distribution systems. Guidance for the evaluation of such equipment is given in the Technical Report IEC 61000-3-5.1994.” in the note. - In clause 2 “Normative references”, ADD GB 15579-1995 “Arc welding equipment - Part 1.Welding power sources”; GB 17625.1-2003 “Electromagnetic compatibility - Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)”; IEC 61000-3-11 Electromagnetic compatibility (EMC) - Part 3-11.Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems - Equipment with rated current ≤ 75 A and subject to conditional connection. Because Amendment 1 (1990) to IEC 60868.1986 “Flickermeter - Functional and Design Specifications” is replaced by IEC 61000-4-15.2003, the original reference is replaced by IEC 61000-4-15.2003. - In clause 3 “Definitions”, ADD terms. r.m.s. voltage shape U(t), voltage change characteristic ∆U(t), maximum voltage change characteristic ∆Umax, voltage fluctuation, flicker impression time tf, conditional connection, interface point. - MODIFY the heading of clause 4 TO “Assessment of voltage changes, voltage fluctuations and flicker”, by adding “voltage fluctuations” in the original heading. - In clause 5 “Limits”, MAKE the following modifications. “the relative steady-state voltage change, dc, shall not exceed 3 %” is modified to. the relative steady-state voltage change shall not exceed 3.3 %; “the value of d(t) during a voltage change shall not exceed 3 % for more than 200 ms” is modified to. the value of d(t) during a voltage change shall not exceed 3.3 % for more than 500 ms; “the maximum relative voltage change dmax, shall not exceed 4 %” is modified to. the maximum relative voltage change dmax, shall not exceed 4 %, 6 %, 7 %, and specify the applicable conditions of different limits of dmax. - In clause 6 “General”, ADD the following contents. “Tests need not be made on equipment which is unlikely to produce significant voltage fluctuations or flicker. It may be necessary to determine, by examination of the circuit diagram and specification of the equipment and by a short functional test, whether significant voltage fluctuations are likely to be produced. For voltage changes caused by manual switching, equipment is deemed to comply without further testing if the maximum r.m.s. input current (including inrush current) evaluated over each 10 ms half-period between zero- crossings does not exceed 20 A, and the supply current after inrush is within a variation band of 1.5 A. If measurement methods are used, the maximum relative voltage change dmax caused by manual switching shall be measured in accordance with Annex B.” - MODIFY the diagrams of Figure 2 -- Histogram evaluation of U(t) and Figure 3 -- Relative voltage change characteristic. - In Annex A “Application of limits and type test conditions for specific equipment”, ADD test conditions for lighting and similar equipment, test conditions for washing machines, test conditions for audio-frequency amplifiers, test conditions for air conditioners, dehumidifiers, heat pumps, and commercial refrigerating equipment, test conditions for arc welding equipment and allied processes. - ADD Annex B “Test conditions and procedures for measuring dmax voltage changes caused by manual switching”. Annex A and Annex B of this Part are normative annexes. This Part was proposed by China Electrical Equipment Industry Association. This Part is under the jurisdiction of National Technical Committee on Electromagnetic Compatibility of Standardization Administration of China (SAC/TC 246). Responsible drafting organization of this Part. Shanghai Electric Tools Research Institute. Participating drafting organization of this Part. Shanghai Lighting Research Institute. Main drafters of this section are. Yin Haixia, Li Bangxie, Gu Jing, Chen Jianqiu, Pan Shunfang, Wang Yongxi. This Part shall be interpreted by Shanghai Electric Tools Research Institute. The previous released version replaced by this Part is as follows. GB 17625.2- 1999. Electromagnetic compatibility (EMC) - Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection1 ScopeThis Part is concerned with the limitation of voltage fluctuations and flicker impressed on the public low-voltage system.2 Normative referencesThe following documents contain the provisions which, through reference in this Part, become the provisions of this Part. For dated references, their subsequent amendments (excluding corrigendum) or revisions do not apply to this Part.3 Terms and definitionsFor the purpose of this Part, the following terms and definitions and those defined in GB/T 4365-2003 apply.4 Assessment of voltage changes, voltage fluctuationsn and flickerThe short-term flicker value Pst is defined in IEC 60000-4-15.2003. All types of voltage fluctuations may be assessed by direct measurement using a flickermeter which complies with the specification given in IEC 60000-4- 15.2003, and is connected as described in clause 6 of this Part. This is the reference method for application of the limits.5 LimitsThe limits shall be applicable to voltage fluctuations and flicker at the supply terminals of the equipment under test, measured or calculated according to clause 4 under test conditions described in clause 6 and Annex A. Tests made to prove compliance with the limits are considered to be type tests.6 Test conditionsIf measurement methods are used, the maximum relative voltage change dmax caused by manual switching shall be measured in accordance with Annex B. The magnitude of the current shall be measured with an accuracy of ±1 % or better. If instead of active and reactive current the phase angle is used, its error shall not exceed ±2°.Annex A(normative) Application of limits and type test conditions for specific equipment For cookers designed for use in domestic premises, the evaluation of Plt shall not be required. ......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 17625.2-2007 be delivered?Answer: The full copy PDF of English version of GB 17625.2-2007 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 17625.2-2007_English with my colleagues?Answer: Yes. 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