Detail of DB 11/065-2000

Introduction of DB 11/065-2000

1 Scope This code specifies the general technical specification of the electrical fire prevention detection, visual check, instrument detection and judgment method for potential problem of electrical fire. This code is applicable to the electrical fire prevention detection for 10kV or below power user. This code is not applicable to the electrical fire prevention detection of mining shaft bottom, explosive-risk place as well as electrostatic prevention, lightning protection and fire prevention facilities. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. All standards are subject to the revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest edition of the standards indicated below. GB 763-1990 "Heating of A.C. High-voltage Apparatus under Long Runs" GB 1497-1985 "Basic Standard for Low-voltage Apparatus" GB 2313-1993 "Ballasts for Tubular Fluorescent Lamps-General and Safety Requirements" GB 6450 "Dry-type Power Transformers" GB 7000-1996 "Safety Requirements and Tests for Luminaires" GB 16895.3-1997 "Electrical Installations of Buildings-Part 5: Selection and Erection of Electrical Equipment-Chapter 54: Earthing Arrangements and Protective Conductors" GB 50045-1995 "Code for Fire Protection Design of Tall Building" GB 50052-1995 "Code for Design of Electric Power Supply Systems" GB 50053-1994 "Code for Design of 10kV & under Electric Substation" GB 50054-1995 "Code for Design of Low Voltage Electrial Installations" GB 50055-1993 "Code for Design of Electric Distribution of General-purpose Utilization Equipment" GB 50150-1991 "Standard for Hand-over Test of Electric Equipment Electric Equipment Installation Engineering" GB 50168-1992 "Code for Construction and Acceptance of Cable System Electric Equipment Installation Engineering" GB 50171-1992 "Code for Construction and Acceptance of Switchbeard Outfit Complete Cubicle and Secondary Circuit Electric Equipment Installation Engineering" GB 50194-1993 "Safety Code of Power Supply and Consumption for Installation Construction Engineering" GB 50217-1994 "Code for Design of Cables of Electric Work" GB 50222-1995 "Code for Fire Prevention in Design of Interior Decoration of Buildings" GB 50254-1996 "Code for Construction and Acceptance of Low-voltage Apparatus Electric Equipment Installation Engineering" GB 50258-1996 "Code for Construction and Acception of 1kV and under Feeder Cable Engineering Electric Equipment Installation Engineering" GB 50259-1996 "Code for Construction and Acception of Electric Lighting Device Electric Equipment Installation Engineering" GBJ 16-1997 "Code of Design on Building Fire Protection and Prevention" GBJ 303-1988 "Quality Inspection and Assessment of Electric Equipment Installation" DL/T 572-1995 "Operation Specification for Power Transformer" DL/T 664-1999 "Technical Guide for Infrared Diagnosis of Alive Equipment" JGJ/T 16-1992 "Code for Electrical Design of Civil Buildings" SD 292-1988 "Operating Code for Overhead Line and Equipment (Trail) IEC 60364-7-703 "Electrical Safety Requirements for Locations Containing Sauna Heaters" IEC 60364-7-704 "Electrical Safety Requirements for Construction and Demolition Site" IEC 60364-7-713 "Electrical Safety Requirements for Furniture" 3 General Provisions 3.1 The electric equipment and line shall be corresponding with the environment conditions and specified working state. 3.2 The electric equipment and line as well as the accessories shall meet the product quality standard, and shall be provided with the product qualification certificate. 3.3 The electrical fire prevention detection shall be carried out after the electric equipment and line have undergone more than 1h load operation and the temperature change ratio is less than 1℃/h after entering into thermal stability working state. 3.4 The electrical fire prevention detection shall not only comply with this code, but also shall comply with those specified in the national current relevant mandatory codes and standards.

Contents of DB 11/065-2000

Contents Foreword I 1 Scope 2 Normative References 3 General Provisions 4 Power Substation 5 Indoor Low-voltage Distribution Line 5.3 Conductor Connection, Conductor and Equipment or Apparatus Connection 5.4 Insulation Strength of Insulated Conductor 5.5 Socket and Switch 5.6 Low Voltage Apparatus 5.7 Power Cable Line 6 Lighting Device and General Low-voltage Electrical Equipment 6.1 Lighting Device 6.2 Motor 6.3 Rectifying Installation 6.4 Other Small Electrical Equipments 7 Earthing and Equipotential Bounding 7.1 General Technical Requirements 7.2 Selection and Working State of Earthing and Equipotential Bounding 8 Special Locations 8.1 Large Artistic Performance Locations 8.2 Public Recreation Area 8.3 Exhibition and Sales Exhibition Locations as Well as Fair Trade Market of Building Materials and Furniture Illumination Commodity 8.4 Construction Site 8.5 Sauna Room 8.6 Hotel Furniture as Well as Electrical Device and Line in Business Shop Widow and Exhibition Cabinet 9 Detection and Judgment Method for Electrical Fire Potential Problem 9.1 General Technical Requirements 9.2 Selection of Detection Instrument and General Requirements for Technical Performance 9.3 Detection of Temperature and Judgment of Overheated Electrical Fire Potential Problem 9.4 Detection of Discharged Electrical Fire Potential Problem 9.5 Detection of Harmonic Component and Neutral Line Overload Current 9.6 Detection of Insulation Resistance 9.7 Detection of Earthing Resistance 10 Detection and Result Treatment Appendix A (Normative) Connection Methods of the Fire Prevention Leakage Protector Appendix B (Normative) Type of the Earthing System Appendix C (Normative) Division of the IP Protection Degree Appendix D (Informative) Reference Value of the Emissivity of the Common Materials