GB/Z 41909-2022
Low-voltage switchgear and controlgear—Electromagnetic compatibility assessment for switchgear and controlgear and their assemblies (English Version)
- Standard No.
- GB/Z 41909-2022
- Language
- Chinese, Available in English version
- Release Date
- 2022
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/Z 41909-2022
- Scope
- The purpose of this document is to define the categories of the electromagnetic environment in order to coordinate as much as possible the EMC principles and requirements for all low-voltage switchgear, control equipment and complete sets of equipment with built-in electronic circuits. This document also covers EMC requirements related to radio communication functions. Typical applications for this type of equipment include power distribution in infrastructure, commercial and industrial buildings, and machine control systems including motor drive systems. The purpose of proposing EMC requirements is to ensure the safe and reliable operation of equipment, as well as to ensure the communication efficiency of radio communication equipment in its intended use environment.
- Introduction
Interpretation of the core content of the standard
This standard is equivalent to IEC TR 63216:2019, providing technical guidance for the electromagnetic compatibility (EMC) assessment of low-voltage switchgear and its complete sets.
- Four-level classification system for electromagnetic environment (E-Ⅰ to E-Ⅳ)
- Additional EMC requirements for radiocommunication equipment
- Conducted and radiated emission limits
- Immunity test levels based on IEC 61000 series
Comparison of electromagnetic environment classification
Environmental category Typical location Transient coupling (peak kV) Power frequency magnetic field (A/m) E-Ⅰ Protected area (such as EMC shielding cabin) 1 - E-Ⅲ Industry (factory main distribution system) 4 30 E-Ⅳ Distribution (near substation) 6 100
Key Implementation Recommendations
Special Requirements for Radio Communication Equipment
When switchgear integrates wireless functionality:
- Radiated emission tests should exclude communication frequency bands (such as 2.4 GHz/5 GHz)
- 80 MHz-6 GHz full-band radiated immunity tests need to be supplemented
- External antenna ports need to meet CISPR 32 Class A limits
EMC management of complete sets of equipment
Complete sets of equipment that comply with IEC 61439 can be exempted from overall testing, but must meet the following requirements:
- All components comply with the product standards for the corresponding environmental categories
- Cable shielding and grounding are strictly performed in accordance with manufacturer specifications
- Isolation measures (such as filter cabins) are required for mixed environments
Technology evolution analysis
The main advances of this standard compared to earlier versions:
- Additional 5G communication frequency band considerations: Extend the upper limit of radiation immunity to 6 GHz
- Strengthen transient protection: Clarify the 6kV peak coupling requirement for E-IV environment
- Introduce functional safety: Cite the special requirements for safety-related systems in IEC 61000-6-7
GB/Z 41909-2022 Referenced Document
- CISPR 11:2015/Amd2:2019 Amendment 2 - Requirements for semiconductor power converters (SPC)/ Improvement of repeatability for measurements in the frequency range 1-18 GHz
- CISPR 32 Corrigendum 1 - Electromagnetic compatibility of multimedia equipment - Emission requirements
- GB/T 17626.2-2018 Electromagnetic compatibility.Testing and measurement techniques.Electrostatic discharge immunity test
- GB/T 18039.4-2017 Electromagnetic compatibility—Environment—Compatibility levels in industrial plants for low-frequency conducted disturbances
- GB/T 7251.1-2013 Low-voltage switchgear and controlgear assemblies―Part 1: General rules
- IEC 60050-161:1990 International elektrotechnical vocabulary; chapter 161: electromagnetic compatibility
- IEC 60050-161:1990/Amd1:1997 International Elektrotechnical Vocabulary - Chapter 161: Electromagnetic compatibility; Amendment 1
- IEC 60050-161:1990/Amd3:2014 International elektrotechnical vocabulary - Part 161: Electromagnetic compatibility; Amendment 3
- IEC 60050-161:1990/Amd4:2014 International elektrotechnical vocabulary - Part 161: Electromagnetic compatibility; Amendment 4
- IEC 60050-161:1990/Amd5:2015 International Electrotechnical Vocabulary - Part 161: Electromagnetic compatibility
- IEC 60050-161:1990/Amd6:2016 International electrotechnical vocabulary - Part 161: Electromagnetic compatibility; Amendment 6
- IEC 60050-161:1990/Amd7:2017 Amendment 7 - International electrotechnical vocabulary - Part 161: Electromagnetic compatibility
- IEC 60050-161:1990/Amd8:2018 Amendment 8 - International Electrotechnical Vocabulary (IEV) - Part 161: Electromagnetic compatibility
- IEC 60947-1 Corrigendum 2 - Low-voltage switchgear and controlgear - Part 1: General rules*， 2024-04-29 Update
- IEC 61000-4-3 Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
- IEC 61000-4-4 Electromagnetic compatibility (EMC) — Part 4-4: Testing and measurement techniques — Electrical fast transient/burst immunity test
- IEC 61000-4-5 Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test*， 2025-04-21 Update
- IEC 61000-4-6 Electromagnetic compatibility (EMC) — Part 4-6: Testing and measurement techniques — Immunity to conducted disturbances, induced by radio-frequency fields*， 2023-06-06 Update
- IEC 61000-4-8 Electromagnetic compatibility (EMC) — Part 4-8: Testing and measurement techniques — Power frequency magnetic field immunity test
- IEC 61000-6-2 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity standard for industrial environments
- IEC 61000-6-3 Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for residential, commercial and light-industrial environments
- IEC 61000-6-5 Corrigendum 1 - Electromagnetic compatibility (EMC) - Part 6-5: Generic standards - Immunity for equipment used in power station and substation environment
- IEC 61000-6-7 Electromagnetic compatibility (EMC) - Part 6-7: Generic standards - Immunity requirements for equipment intended to perform functions in a safety-related system (functional safety) in industrial locations
- IEC 61131-2 Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI)
- IEC 61800-3 Adjustable speed electrical power drive systems - Part 3: EMC requirements and specific test methods for PDS and machine tools*， 2022-11-30 Update
GB/Z 41909-2022 history
- 2022 GB/Z 41909-2022 Low-voltage switchgear and controlgear—Electromagnetic compatibility assessment for switchgear and controlgear and their assemblies