GB/Z 42004-2022Consideration of reference impedances and public supply network impedances for use in determining the disturbance characteristics of electrical equipment having a rated current <=75 A per phase (English PDF)
确定电气设备（每相额定电流小于或等于75A）骚扰特性用的参考阻抗和公用供电网络阻抗的考虑
This is a limited preview
Buy now to download the full PDF (22 pages)
Need quotation for your management?
Get a formal quotation for GB/Z 42004-2022 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 12, 2022
Implementation date
October 12, 2022
Scope
GB/Z 42004-2022 is the English-translated version of 确定电气设备（每相额定电流小于或等于75A）骚扰特性用的参考阻抗和公用供电网络阻抗的考虑.
GB/Z 42004-2022 is the Chinese standard "Consideration of reference impedances and public supply network impedances for use in determining the disturbance characteristics of electrical equipment having a rated current <=75 A per phase".
Its scope clause reads: This document gives information about the reference impedances available and the factors that need to be considered when deriving the reference impedances.
Previously included in IEC 60555, it is now included in some parts of the IEC 61000-3 series. In addition, this document also gives information on the impedance of the public power supply network with a power supply current capability greater than or equal to 100A per phase.
This document is suitable for obtaining reference impedance and common supply for determining disturbance characteristics of electrical equipment (rated current less than or equal to 75A per phase) Information on consideration of electrical network impedance.
Found what you need?
Document preview — GB/Z 42004-2022
National Standard of the People's Republic of China
- ICS
- 33.100.01
- Classification
- L 06
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Low-voltage power supply system
- 3.1 Three-phase power supply system
- 3.2 Single-phase two-wire power supply system
- 3.3 Single-phase three-wire power supply system
- 4 Power supply impedance
- 4.1 Typical residential site
- 4.2 Large Residential, Commercial and Light Industrial Sites
- 4.2.1 Overview
- 4.2.2 Supply impedance related to the connection of three-phase equipment
- 4.2.3 Supply impedance related to single-phase equipment connection
- 5 Reference impedance
- 5.1 General
- 5.2 The rated current is less than or equal to the reference impedance of the 16A device
- 5.2.1 General
- 5.2.2 50Hz and 60Hz low voltage power supply system
- 6 Impedance at frequencies higher than supply frequency
- Appendix C (Informative) Power Supply Impedance Measurement and Investigation Methods
1 Scope
This document gives information about the reference impedances available and the factors that need to be considered when deriving the reference impedances.
Previously included in IEC 60555, it is now included in some parts of the IEC 61000-3 series.
In addition, this document also gives information on the impedance of the public power supply network with a power supply current capability greater than or equal to 100A per phase.
This document is suitable for obtaining reference impedance and common supply for determining disturbance characteristics of electrical equipment (rated current less than or equal to 75A per phase)
Information on consideration of electrical network impedance.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
IEC 61000-3-3 Electromagnetic Compatibility (EMC) Part 3-3.Limits for devices with rated current <= 16A per phase and unconditional access tionalconnection)
Note. GB/T 17625.2-2007 Electromagnetic Compatibility Limits for each phase rated current <=16A and unconditionally connected equipment in public low-voltage power supply system
Limitation of generated voltage variations, voltage fluctuations and flicker (IEC 61000-3-3.2005, IDT)
IEC 61000-3-11 Electromagnetic Compatibility (EMC) Part 3-11.Limits for voltage variations generated in public low-voltage supply systems, tion)
Note. GB/T 17625.7-2013 Electromagnetic compatibility limits are generated in the public low-voltage power supply system for equipment with rated current <=75A and conditional access
Limits of voltage variation, voltage fluctuation and flicker (IEC 61000-3-11.2000, MOD)
IEC 61000-3-12 Electromagnetic Compatibility (EMC) Part 3-12.Limits per phase input current greater than 16A less than or equal to
Note. GB/T 17625.8-2015 Electromagnetic Compatibility Limits The input current per phase is greater than 16A and less than or equal to 75A for equipment connected to public low-voltage systems
Harmonic current limits generated by equipment (IEC 61000-3-12.2004, IDT)
GB/T 43248 | GB/T 40309 | GB/T 38659.1 | GB/T 48008 | GB/T 18487.2 | […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 22 pages — is available in the English PDF.
Referenced standards
Normative references
IEC 61000-3-3 · IEC 61000-3-11 · IEC 61000-3-12
Similar standards
How to Download GB/Z 42004-2022
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/Z 102.17-2026 — Semiconductor devices - Discrete devices - Part 17: Magnetic and capacitive coupler for basic and reinforced insulation
GB/Z 103-2026 — Health informatics - The architecture of internet healthcare service network
GB/Z 108-2026 — Health informatics - Internet healthcare service pattern
Secure payment via Stripe
Payments accepted
GB/Z 42004-2022
$360.00