Announcement　of　the　Ministry　of　Housing　and　Urban-Rural　Development　of　the　People　s　Republic　of　China

Foreword

1　General　Provisions

2　Terms

3　Basic　Requirements

• 3.1　General　Requirements

• 3.2　Composition　of　Earthing　System

• 3.3　Earth　Electrode

• 3.4　Earthing　Connection

• 3.5　Main　Earthing　Conductor

• 3.6　Earthing　Conductor

• 3.7　The　Types　of　Equipotential　Bonding

• 3.8　The　Accessing　Ways　of　Various　Cables

• 3.9　The　Layout　Requirements　of　Earthing　Conductor

• 3.10　The　Protection　of　the　Computer　Network　Interface　and　Control　Terminal　Interface

• 3.11　The　Earthing　of　Centralized　Monitoring　System　and　the　Interface　Protection

• 3.12　The　Layout　of　Cables　in　the　Bureau

• 3.13　Power　Distribution　System

• 3.14　The　Earthing　of　Auxiliary　Equipment　in　the　Equipment　Room

• 3.15　The　Lightning　Protection　and　Earthing　of　Optical　Fiber　Cable

• 3.10　The　Protection　of　Network　Interface　of　Computer　and　Control　Terminal　Interface

• 3.11　The　Earthing　of　Centralized　Monitoring　System　and　Protection　of　the　Interface

4　The　Lightning　Protection　and　Earthing　of　Comprehensive　Telecommunication　Building

• 4.1　General　Requirements

• 4.2　The　Types　of　Earthing　and　Bonding

• 4.3　The　Types　of　Internal　Equipotential　Bonding

• 4.4　Earth　Grid

• 4.5　The　Earthing　of　the　Cables　Entering　into　Bureau

• 4.6　The　Earthing　of　Telecommunication　Equipment

• 4.7　The　Earthing　of　Power　Supply　System

• 4.8　The　Earthing　of　Other　Facilities

• 4.9　The　Lightning　Protection　Design　of　Building

5　The　Lightning　Protection　and　Earthing　of　Cable　Telecommunication　Bureaus（Stations）

• 5.1　Exchange　Bureau　and　Data　Bureau

• 5.2　Access　Network　Station　and　Module　Bureau

• 5.3　Broadband　Access　Sites

• 5.4　Fiber　Cable　Repeater　Station

• 5.5　The　Earthing　of　DC　Power　Distribution　System　for　Telecommunication　Equipment

6　The　Lightning　Protection　and　Earthing　of　Mobile　Telecommunication　Base　Station

• 6.1　General　Requirements

• 6.2　Earth　Grid

• 6.3　Direct　Stroke　Protection

• 6.4　The　Earthing　of　Antenna　and　Feeding　Cable

• 6.5　The　Lightning　Protection　and　Earthing　of　DC　Remote　Feeding　System

• 6.6　The　Lightning　Protection　of　Earthing　of　GPS　Antennas　and　Feeding　Cables

• 6.7　Internal　Equipotential　Bonding

• 6.8　The　Handling　of　Earthing　Connection　and　Indoor　Earthing

• 6.9　The　Earthing　of　Other　Accessing　Cables

• 6.10　The　Earthing　of　DC　Power　Distribution　System　for　Telecommunication　Equipment

• 6.6　The　Lightning　Protection　of　Earthing　of　GPS　Antennas　and　Feeding　Cable

7　The　Lightning　Protection　and　Earthing　of　Small　Telecommunication　Station

• 7.1　General　Requirements

• 7.2　Earth　Grid

• 7.3　Direct　Lightning　Protection

• 7.4　Others

8　The　Lightning　Protection　and　Earthing　of　Microwave　and　Satellite　Stations

• 8.1　The　Lightning　Protection　and　Earthing　of　Microwave　Stations

• 8.2　The　Lightning　Protection　and　Earthing　of　Satellite　Stations

9　The　Design　of　Lightning　Over-Voltage　Protection　for　Telecommunication　Bureaus（Stations）

• 9.1　General　Requirements

• 9.2　The　Application　Requirements　of　SPD

• 9.3　The　Principles　of　Lightning　Over-Voltage　Protection　for　the　Power　System　in　Telecommunication　Bureaus（Stations）

• 9.4　The　Installation　Requirements　of　Power　SPD

• 9.5　The　Principles　of　Lightning　Over-Voltage　Protection　Design　for　Computer　Networks　and　Signal　Cables

Appendix　A　The　Statistics　Tables　of　the　Average　Number　of　Thunderstorm　Days　in　One　Year　on　Major　Cities

Appendix　B　The　Nationwide　Zoned　Map　of　the　Average　Number　of　Thunderstorm　Days　in　One　Year

Appendix　C　The　Requirements　of　SPD　Protection　Mode

Appendix　D　Mesh，Star　and　Star-Mesh　Mixed　Earthing　System

Appendix　E　The　Test　of　Earthing　Resistance

Appendix　F　The　Measurement　of　Earth　Resistivity

Appendix　G　Lightning　Protection　Zones

Explanation　of　Wording　in　This　Code

List　of　Quoted　Standards

Explanation　of　Provisions

Instructions　of　Formulation