GB/T 17626.7-2017
Electromagnetic compatibility—Testing and measurement techniques—General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto (English Version)

Standard No.

GB/T 17626.7-2017

Language

Chinese, Available in English version

Release Date

2017

Published By

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会

Latest

GB/T 17626.7-2017

Replace

GB/T 17626.7-2008

Scope

This part of GB/T 17626 applies to measuring instruments for measuring spectral components (up to 9 kHz) added to the fundamental wave of a 50 Hz or 60 Hz power system. From practical application considerations, this section divides the signal into harmonics. Inter-harmonics and other components above the harmonic range but below 9Hz. The author specifies the emission limit values given in some standards (such as the harmonic current and value given in IEC61000-3-2) to test the equipment one by one, and to test the harmonics of the actual power supply system. An instrument for the measurement of current and voltage. Provisional regulations have been made for measuring instruments in the range from above harmonic frequency to 9 Hz (see Appendix B). Inter-harmonic generation and measurement and special measurement methods made interim provisions, (see Appendix C). Note 1: The instruments involved in this section are based on the discrete Fourier transform. Note 2: This section clearly describes the structure and function of the measuring instrument, so it can be understood literally. This is because the reference instrument is required to obtain repeatable results regardless of the characteristics of the input signal. Note 3: The specified measuring instrument shall have the ability to measure up to the 50th harmonic.

GB/T 17626.7-2017 Referenced Document

• IEC 60038 Amendment 1 - IEC standard voltages*， 2021-12-15 Update
• IEC 61000-2-2 Electromagnetic compatibility (EMC) - Environment - Compatibility levels for low-frequency conducted disturbances and signalling in public low-voltage power supply systems*， 2024-04-22 Update
• IEC 61000-3-2 Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic current emissions (equipment input current < 16 A per phase)*， 2024-03-01 Update

GB/T 17626.7-2017 history

• 2017 GB/T 17626.7-2017 Electromagnetic compatibility—Testing and measurement techniques—General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto
• 2008 GB/T 17626.7-2008 Electromagnetic compatibility.Testing and measurement techniques.General guide on harmonics and interharmonics measurements and instrumentation,for power supply systems and equipment connected thereto
• 1998 GB/T 17626.7-1998 Electromagnetic compatibility--Testing and measurement techniques--General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto

GB/T 17626.7-2017 -All Parts