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GB/T 18379-2001   Voltage bands for electrical installations of buildings (English Version)
Standard No.: GB/T 18379-2001 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 2000 words Price(USD):110.0 remind me the price change

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Implemented on:2001-12-1 Delivery: via email in 1 business day
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Standard No.: GB/T 18379-2001
English Name: Voltage bands for electrical installations of buildings
Chinese Name: 建筑物电气装置的电压区段
Chinese Classification: K60    Electrical equipment and tool in general
Professional Classification: GB    National Standard
ICS Classification: 91.140.50 91.140.50    Electricity supply systems 91.140.50
Issued by: AQSIQ
Issued on: 2001-7-1
Implemented on: 2001-12-1
Status: valid
Language: English
File Format: PDF
Word Count: 2000 words
Price(USD): 110.0
Delivery: via email in 1 business day
INTRODUCTION The installation rules, especially the measures to be applied for protection against electric shock, depend on the value of the voltage used. Since it is neither possible nor necessary to consider each individual voltage value occurring in practical application, common requirements are established for each particular voltage band. This recommendation is intended to furnish the basis for the uniform fixing of such voltage bands. Within the field of the installations to which IEC Technical Committee No. 64 recommendations are applicable (see Sub-clause 11.2 of GB 16895.11]), it is possible to define two voltage bands which are covered respectively by their own rules. Some of the conditions to be prescribed may, however, vary as a function of the voltage even within the same voltage band. It is therefore necessary to introduce additional limits for particular applications or installations (e.g. welding, electroplating, etc.). It is assumed, however, that this applies only to a few of the requirements to be fixed. Such specific voltage limits are given in the relevant requirements. Band I Band I covers: — installations where protection against shock is provided under certain conditions by the value of voltage; — installations where the voltage is limited for operational reasons (e.g. telecommunications, signalling, bell, control and alarm installations). Band II Band II contains the voltages for supplies to household, commercial and industrial installations. This band contains all the voltages of public distribution systems in the various countries. Explanation of Adoption 1] GB 16895.1-1997 Electrical installations of buildings—Part 1: Scope, object and fundamental principles is identical to IEC 60364-1:1992 Electrical installations of buildings Part 1: Scope, object and fundamental principles. 1. Scope This recommendation applies to a.c. electrical installations of buildings supplied at a frequency not exceeding 60 Hz and at a nominal voltage up to and including 1 000 V, and d.c . electrical installations of buildings supplied at a nominal voltage (power source) up to and including 1 500 V. The voltage bands defined are intended mainly for use in connection with installation rules, but may also be used when preparing requirements for electrical equipment. Note. — The extension of the scope to include frequencies higher than 60 Hz is under consideration. 2. Definitions The following definitions are adopted in this standard. 2.1 Nominal voltage Voltage by which an installation (or a part of an installation) is designated. Notes 1. — The actual value of the voltage in the installation may differ from the nominal voltage by a quantity within normal tolerances. 2. — Voltage transients, such as those due to switching, or temporary voltage variations due to abnormal operation, such as those due to fault conditions in the system supplying the installation, are not taken into consideration. 2.2 Earthed systems Systems in which a point — generally the neutral point — is directly connected to earth without any intentional impedance. 2.3 Isolated or not effectively earthed systems Systems in which no point is connected to earth or in which a point — generally the neutral point — is connected to earth by a limiting impedance. 3. A.C Voltage bands A.C voltage bands in which the installations shall be classified according to their nominal voltage are given in Table 1: — for earthed systems, by the r.m.s. values of the voltages between phase and earth and between phases; — for isolated or not effectively earthed systems , by the r.m.s. value of the voltage between phases.
GB/T 18379-2001 is referred in:
* GB 50194-2014 Safety code of power supply and consumption for installation construction engineering
* GB 16895.21-2011 Low-voltage electrical installations—Part 4-41:Protection for safety—Protection against electric shock
* GB 19212.1-2008 Safety of power transformers power supplies reactors and similar products - Part 1: General requirements and tests
Code of China
Standard
GB/T 18379-2001  Voltage bands for electrical installations of buildings (English Version)
Standard No.GB/T 18379-2001
Statusvalid
LanguageEnglish
File FormatPDF
Word Count2000 words
Price(USD)110.0
Implemented on2001-12-1
Deliveryvia email in 1 business day
Detail of GB/T 18379-2001
Standard No.
GB/T 18379-2001
English Name
Voltage bands for electrical installations of buildings
Chinese Name
建筑物电气装置的电压区段
Chinese Classification
K60
Professional Classification
GB
ICS Classification
Issued by
AQSIQ
Issued on
2001-7-1
Implemented on
2001-12-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
2000 words
Price(USD)
110.0
Keywords
GB/T 18379-2001, GB 18379-2001, GBT 18379-2001, GB/T18379-2001, GB/T 18379, GB/T18379, GB18379-2001, GB 18379, GB18379, GBT18379-2001, GBT 18379, GBT18379
Introduction of GB/T 18379-2001
INTRODUCTION The installation rules, especially the measures to be applied for protection against electric shock, depend on the value of the voltage used. Since it is neither possible nor necessary to consider each individual voltage value occurring in practical application, common requirements are established for each particular voltage band. This recommendation is intended to furnish the basis for the uniform fixing of such voltage bands. Within the field of the installations to which IEC Technical Committee No. 64 recommendations are applicable (see Sub-clause 11.2 of GB 16895.11]), it is possible to define two voltage bands which are covered respectively by their own rules. Some of the conditions to be prescribed may, however, vary as a function of the voltage even within the same voltage band. It is therefore necessary to introduce additional limits for particular applications or installations (e.g. welding, electroplating, etc.). It is assumed, however, that this applies only to a few of the requirements to be fixed. Such specific voltage limits are given in the relevant requirements. Band I Band I covers: — installations where protection against shock is provided under certain conditions by the value of voltage; — installations where the voltage is limited for operational reasons (e.g. telecommunications, signalling, bell, control and alarm installations). Band II Band II contains the voltages for supplies to household, commercial and industrial installations. This band contains all the voltages of public distribution systems in the various countries. Explanation of Adoption 1] GB 16895.1-1997 Electrical installations of buildings—Part 1: Scope, object and fundamental principles is identical to IEC 60364-1:1992 Electrical installations of buildings Part 1: Scope, object and fundamental principles. 1. Scope This recommendation applies to a.c. electrical installations of buildings supplied at a frequency not exceeding 60 Hz and at a nominal voltage up to and including 1 000 V, and d.c . electrical installations of buildings supplied at a nominal voltage (power source) up to and including 1 500 V. The voltage bands defined are intended mainly for use in connection with installation rules, but may also be used when preparing requirements for electrical equipment. Note. — The extension of the scope to include frequencies higher than 60 Hz is under consideration. 2. Definitions The following definitions are adopted in this standard. 2.1 Nominal voltage Voltage by which an installation (or a part of an installation) is designated. Notes 1. — The actual value of the voltage in the installation may differ from the nominal voltage by a quantity within normal tolerances. 2. — Voltage transients, such as those due to switching, or temporary voltage variations due to abnormal operation, such as those due to fault conditions in the system supplying the installation, are not taken into consideration. 2.2 Earthed systems Systems in which a point — generally the neutral point — is directly connected to earth without any intentional impedance. 2.3 Isolated or not effectively earthed systems Systems in which no point is connected to earth or in which a point — generally the neutral point — is connected to earth by a limiting impedance. 3. A.C Voltage bands A.C voltage bands in which the installations shall be classified according to their nominal voltage are given in Table 1: — for earthed systems, by the r.m.s. values of the voltages between phase and earth and between phases; — for isolated or not effectively earthed systems , by the r.m.s. value of the voltage between phases.
Contents of GB/T 18379-2001
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Keywords:
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