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Position: Chinese Standard in English/GB 16895.12-2001
GB 16895.12-2001   Electrical installations of buildings--Part 4:Protection for safety--Chapter 44:Protection against overvoltages--Section 443:Protection against overvoltages of atmospheric origin or due to switching (English Version)
Standard No.: GB 16895.12-2001 Status:abolished remind me the status change

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Language:English File Format:PDF
Word Count: 3500 words Price(USD):384.0 remind me the price change

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Implemented on:2002-11-1 Delivery: via email in 1 business day
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Standard No.: GB 16895.12-2001
English Name: Electrical installations of buildings--Part 4:Protection for safety--Chapter 44:Protection against overvoltages--Section 443:Protection against overvoltages of atmospheric origin or due to switching
Chinese Name: 建筑物电气装置 第4部分:安全防护 第44章:过电压保护 第443节:大气过电压或操作过电压保护
Chinese Classification: Q77    Building electrical equipment and disaster prevention equipment and instrument
Professional Classification: GB    National Standard
ICS Classification: 91.140.50 91.140.50    Electricity supply systems 91.140.50
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of PRC
Issued on: 2001-11-21
Implemented on: 2002-11-1
Status: abolished
Superseded by:GB/T 16895.10-2010 Low-voltage electrical installations—Part 4-44: Protection for safety—Protection against voltage disturbances and electromagnetic disturbances
Superseded on:2011-7-1
Abolished on:2011-07-01
Language: English
File Format: PDF
Word Count: 3500 words
Price(USD): 384.0
Delivery: via email in 1 business day
443.1 General 443.1.1 Scope and object This standard specifies protection of electrical installations against transient overvoltages of atmospheric origin transmitted by the supply distribution system and against switching overvoltages generated by the equipment within the installation, in Electrical Installations of Buildings - Part 4: Protection for Safety. Consideration shall be given to the overvoltages which can appear at the origin of an installation, to the expected ceraunic level and to the location and characteristics of overvoltage protective devices, so that the probability of incidents due to overvoltage stresses is reduced to an acceptable level for the safety of persons and property, as well as for the continuity of service desired. The values of transient overvoltages depend on the nature of the supply distribution system(underground or overhead) and the possible existence of a low-voltage protective device upstream of the origin of the installation and the level of the supply system. This standard provides guidance where protection against overvoltages is covered by inherent control or assured by protective control. If the protection according to this standard is not provided, insulation coordination is not assured and the risk due to overvoltages shall be evaluated. Notes: 1 Where, in this standard, the term "transient overvoltage" is used, it is intended to mean statistical lightning overvoltage as defined: The statistical level of overvoltages is defined as the overvoltage applied to equipment as a result of an event of one specific type in the system (line energization, reclosing, fault occurrence, lightning discharge, etc.), the peak value of which has a probability of being exceeded which is equal to a specified reference probability. 2 As regards transient atmospheric overvoltages, no distinction is made between earthed and unearthed systems. 3 Switching overvoltages generated outside the installation and transmitted by the supply network are under consideration. 4 The rules of this standard do not apply to telecommunication systems. 443.1.2 Normative References The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. At time of publication, the editions indicated were valid. All the standards will be modified, however, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. GB 16895.11-2001 Electrical Installations of Buildings - Part 4: Protection for Safety - Chapter 44: Protection against Overvoltages - Section 442 - Protection of Low-voltage Installations against Temporary Overvoltages and Faults between High-voltage Systems and Earth (idt IEC 60364-4-442: 1993) GB/T 16935.1-1997 Insulation Coordination for Equipment within Low-voltage Systems - Part 1: Principles, Requirements and Tests(idt IEC 60664-1: 1992) IEC 60038:1983 Standard Voltages IEC 60050(826): 1990 International Electrotechnical Vocabulary (IEV) - Chapter 826: Electrical Installations of Buildings IEC 60364-5-534: 1997 Electrical Installations of Buildings - Part 5: Selection and Erection of Electrical Equipment - Chapter 53: Switchgear and Controlgear - Section 534: Devices for Protection against Overvoltages IEC 61024-1:1990 Protection of Structures against Lightning - Part 1: General Principles
Foreword i IEC Forward ii IEC Introduction iii 443.1 General 443.2 Classification of Impulse Withstand Categories (Overvoltage Categories) 443.3 Arrangements for Overvoltage Control 443.4 Selection of Equipment in the Installation Annex A (Informative) Guidance for Protective Control Applied in the Overhead Lines according to Note 1 of 443.3.2.1
Referred in GB 16895.12-2001:
*-
*GB/T 16935.1-1997 Insulation coordination for equipment within low-voltage systems Part 1: Principles,requirements and tests
GB 16895.12-2001 is referred in:
* GB/T 16895.17-2002 Eletrical installatoins of buildings - Part 5: Selectrion and erection of electrical equipment - Section 548: Earthing arrangements and equipotential bonding for information technol
*GB/T 21431-2008 Technical specifications for inspection of lightning protection system in building
Code of China
Standard
GB 16895.12-2001  Electrical installations of buildings--Part 4:Protection for safety--Chapter 44:Protection against overvoltages--Section 443:Protection against overvoltages of atmospheric origin or due to switching (English Version)
Standard No.GB 16895.12-2001
Statusabolished
LanguageEnglish
File FormatPDF
Word Count3500 words
Price(USD)384.0
Implemented on2002-11-1
Deliveryvia email in 1 business day
Detail of GB 16895.12-2001
Standard No.
GB 16895.12-2001
English Name
Electrical installations of buildings--Part 4:Protection for safety--Chapter 44:Protection against overvoltages--Section 443:Protection against overvoltages of atmospheric origin or due to switching
Chinese Name
建筑物电气装置 第4部分:安全防护 第44章:过电压保护 第443节:大气过电压或操作过电压保护
Chinese Classification
Q77
Professional Classification
GB
ICS Classification
Issued by
General Administration of Quality Supervision, Inspection and Quarantine of PRC
Issued on
2001-11-21
Implemented on
2002-11-1
Status
abolished
Superseded by
GB/T 16895.10-2010 Low-voltage electrical installations—Part 4-44: Protection for safety—Protection against voltage disturbances and electromagnetic disturbances
Superseded on
2011-7-1
Abolished on
2011-07-01
Superseding
Language
English
File Format
PDF
Word Count
3500 words
Price(USD)
384.0
Keywords
GB 16895.12-2001, GB/T 16895.12-2001, GBT 16895.12-2001, GB16895.12-2001, GB 16895.12, GB16895.12, GB/T16895.12-2001, GB/T 16895.12, GB/T16895.12, GBT16895.12-2001, GBT 16895.12, GBT16895.12
Introduction of GB 16895.12-2001
443.1 General 443.1.1 Scope and object This standard specifies protection of electrical installations against transient overvoltages of atmospheric origin transmitted by the supply distribution system and against switching overvoltages generated by the equipment within the installation, in Electrical Installations of Buildings - Part 4: Protection for Safety. Consideration shall be given to the overvoltages which can appear at the origin of an installation, to the expected ceraunic level and to the location and characteristics of overvoltage protective devices, so that the probability of incidents due to overvoltage stresses is reduced to an acceptable level for the safety of persons and property, as well as for the continuity of service desired. The values of transient overvoltages depend on the nature of the supply distribution system(underground or overhead) and the possible existence of a low-voltage protective device upstream of the origin of the installation and the level of the supply system. This standard provides guidance where protection against overvoltages is covered by inherent control or assured by protective control. If the protection according to this standard is not provided, insulation coordination is not assured and the risk due to overvoltages shall be evaluated. Notes: 1 Where, in this standard, the term "transient overvoltage" is used, it is intended to mean statistical lightning overvoltage as defined: The statistical level of overvoltages is defined as the overvoltage applied to equipment as a result of an event of one specific type in the system (line energization, reclosing, fault occurrence, lightning discharge, etc.), the peak value of which has a probability of being exceeded which is equal to a specified reference probability. 2 As regards transient atmospheric overvoltages, no distinction is made between earthed and unearthed systems. 3 Switching overvoltages generated outside the installation and transmitted by the supply network are under consideration. 4 The rules of this standard do not apply to telecommunication systems. 443.1.2 Normative References The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. At time of publication, the editions indicated were valid. All the standards will be modified, however, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. GB 16895.11-2001 Electrical Installations of Buildings - Part 4: Protection for Safety - Chapter 44: Protection against Overvoltages - Section 442 - Protection of Low-voltage Installations against Temporary Overvoltages and Faults between High-voltage Systems and Earth (idt IEC 60364-4-442: 1993) GB/T 16935.1-1997 Insulation Coordination for Equipment within Low-voltage Systems - Part 1: Principles, Requirements and Tests(idt IEC 60664-1: 1992) IEC 60038:1983 Standard Voltages IEC 60050(826): 1990 International Electrotechnical Vocabulary (IEV) - Chapter 826: Electrical Installations of Buildings IEC 60364-5-534: 1997 Electrical Installations of Buildings - Part 5: Selection and Erection of Electrical Equipment - Chapter 53: Switchgear and Controlgear - Section 534: Devices for Protection against Overvoltages IEC 61024-1:1990 Protection of Structures against Lightning - Part 1: General Principles
Contents of GB 16895.12-2001
Foreword i IEC Forward ii IEC Introduction iii 443.1 General 443.2 Classification of Impulse Withstand Categories (Overvoltage Categories) 443.3 Arrangements for Overvoltage Control 443.4 Selection of Equipment in the Installation Annex A (Informative) Guidance for Protective Control Applied in the Overhead Lines according to Note 1 of 443.3.2.1
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Keywords:
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