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GB/Z 30556.2-2017Electromagnetic compatibility -- Installation and mitigation guidelines -- Earthing and cabling (English PDF)

电磁兼容安装和减缓导则接地和布线

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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

Level / Type

National · Recommended

Issue date

December 29, 2017

Implementation date

July 1, 2018

Scope

GB/Z 30556.2-2017 is the English-translated version of 电磁兼容安装和减缓导则接地和布线.

GB/Z 30556.2-2017 is the Chinese standard "Electromagnetic compatibility -- Installation and mitigation guidelines -- Earthing and cabling".

Its scope clause reads: In order to ensure electromagnetic compatibility (EMC) of electrical and electronic equipment or systems, this section gives connections in electrical and electronic systems and facilities.

Ground and wiring guidelines. It is more concerned with the implementation of grounding and the cables used in industrial, commercial and residential facilities.

This section applies to those Installers of sensitive electrical or electronic equipment and systems and equipment with high emission levels that may degrade the surrounding overall electromagnetic (EM) environment, Users and manufacturers within a certain range.

This section is mainly applicable to new facilities, but it is also applicable to the current situation when economic conditions are feasible. There are facilities for expansion and improvement. Its clauses include terms and definitions.

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Document preview — GB/Z 30556.2-2017

National Standard of the People's Republic of China

ICS: 33.100.20
Classification: L 06

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

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 General EMC Considerations for Grounding and Cabling System Installation
4.1 Overview
4.2 EMC and safety (insulation) installation requirements
4.3 Equipment and installation port
5 Grounding and lap
5.1 Safety requirements
5.2 EMC requirements
5.3 Design of the grounding system
6 lap
6.1 Overview
6.2 lap strip
6.3 Connection
6.4 Lapping of specific equipment
6.5 Programs for Users
7 cables and wires
7.1 Overview
7.2 DM circuit and CM circuit, transfer impedance Zt
7.3 Several EMC Rules for Cable and Wire Installation
7.4 Types of cables and their use of EMC
7.5 Parallel Ground Conductor (PEC) Type
7.6 Connection and grounding of cables and parallel ground conductors
7.7 Universal Cable Routing Options
7.8 Cable bundle
7.9 Power port cable
7.10 Signal and Control Port Cables
8 Additional interference mitigation methods
8.1 CM Ferrite Chokes
8.2 Electrical isolation
9 Measurement and test methods
9.1 Grounding and Bonding
9.2 Cables and installations
Appendix A (Informative) Grounding System and Cable Routing Example
Appendix C (informative) Benefits of additional conductors parallel to the cable

1 Scope

In order to ensure electromagnetic compatibility (EMC) of electrical and electronic equipment or systems, this section gives connections in electrical and electronic systems and facilities.

Ground and wiring guidelines. It is more concerned with the implementation of grounding and the cables used in industrial, commercial and residential facilities. This section applies to those

Installers of sensitive electrical or electronic equipment and systems and equipment with high emission levels that may degrade the surrounding overall electromagnetic (EM) environment,

Users and manufacturers within a certain range. This section is mainly applicable to new facilities, but it is also applicable to the current situation when economic conditions are feasible.

There are facilities for expansion and improvement.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

IEC 60050 (161)..1990 International Electrotechnical Vocabulary Chapter 161. Electromagnetic Compatibility [International ElectrotechnicalVo-

Cabulary (IEV)-Chapter161. Electromagneticcompatibility]

IEC 60050 (826). 1982 International Electrotechnical Vocabulary Chapter 826. Electrical Installation of Buildings [International Electrotech- nicalVocabulary(IEV)-Chapter826.Electricalinstalationsofbuildings]

Amendment 1.1990

Amendment 2..1995

IEC 61000-2-5.1995 Electromagnetic compatibility (EMC) Part 2. Environment Chapter 5. Classification of electromagnetic environment Electromagnetic compatibility

Basic standard [Electromagneticcompatibility(EMC)-Part 2.Environment-Section5.Classificationof electromagneticenvironments-BasicEMCpublication]

IEC 61000-5-1.1996 Electromagnetic compatibility (EMC) Part 5-1. Installation and mitigation guidelines General requirements Electromagnetic compatibility

Basic standard [Electromagneticcompatibility(EMC)-Part 5.Instalationandmitigationguidelines-Sec-

Tion1.Generalconsiderations-BasicEMCpublication]

IEC 61024-1.1990 Lightning protection for buildings - Part 1. General principles [Protectionofstructuresagainst lighting-Part 1.Generalprinciples]

ISO /IEC 11801.1995 General Cable for Information Technology User Building Groups [Informationtechnology-Genericca-

Blingforcustomerpremises]

3 Terms and definitions

IEC 60050 (161)..1990 and IEC 60050 (826). 1982 Amendment 1..1990 Amendment 2..1995 defined terms and

The meaning applies to this document.

A list of abbreviations is provided at the end of this chapter.

3.1 Bonding

An operation of connecting an exposed conductive portion of an apparatus, system, or facility that is substantially equipotential to an external conductive member.

Note. For safety reasons, laps generally include (not necessary) connections to the nearest grounding system.

GB/T 37284 | GB/T 37283 | GB/Z 37150 | GB/Z 30556.9 | GB/Z 30556.8 | GB/T 30556.5 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 91 pages — is available in the English PDF.

Referenced standards

Normative references

IEC 60050 · IEC 61000 · IEC 61024 · IEC 11801.1995

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