1.1 Scope
This Standard applies to a.c. switchgear and controlgear, designed for indoor and outdoor installation and for operation at service frequency of 50 Hz on systems having voltages up to and including 3.0 kV.
This standard applies to all high-voltage switchgear and controlgear except as otherwise specified.
The scope exceeding the requirements of this standard may be additionally specified in the corresponding standard.
1.2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and 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. For undated references, the latest edition of the normative document referred to applies.
Contents
1 General
1.1 Scope
1.2 Normative References
2 Normal and Special Service Conditions
2.1 Normal Service Conditions
2.2 Special Service Conditions
3 Terms and Definitions
3.1 General Terms
3.2 Assemblies of Switchgear and Controlgear
3.3 Parts of Assemblies
3.4 Switching Devices
3.5 Parts of Switchgear and Controlgear
3.6 Operation
3.7 Characteristic Quantities
4 Ratings
4.1 Rated Voltage (Ur)
4.2 Rated Insulation Level
4.3 Rated Frequency (fr)
4.4 Rated Normal Current and Temperature Rise
4.5 Rated Short-Time Withstand Current (Ik)
4.6 Rated Peak Withstand Current (Ip)
4.8 Rated Supply Voltage of Closing and Opening Devices and of Auxiliary and Control Circuits (Ua)
4.9 Rated Supply Frequency of Closing and Opening Devices and of Auxiliary Circuits
4.10 Rated Pressure of Compressed Gas Supply for Pressure Controlled System
4.11 Rated Filling Level of Gas or Liquid Used for Insulation and/or Operation
5 Design and Construction
5.1 Requirements for Liquids in Switchgear and Controlgear
5.2 Requirements for Gases in Switchgear and Controlgear
5.3 Earthing of Switchgear and Controlgear
5.4 Auxiliary and Control Equipment
5.5 Power Operation
5.6 Stored Energy Operation
5.7 Independent Manual Operation
5.8 Operation of Releases
5.9 Low- and High-Pressure Interlocking and Monitoring Devices
5.10 Nameplates
5.11 Interlocking Devices
5.12 Position Indication
5.13 Degrees of Protection by Enclosures
5.14 Creepage Distances
5.15 Gas and Vacuum Tightness
5.16 Liquid Tightness
5.17 Flammability
5.18 Electromagnetic Compatibility (EMC)
5.19 Radiation of X ray
5.20 Corrosion
6 Type Test
6.1 General Description
6.2 Dielectric Tests
6.3 Radio Interference Voltage (R.I.V.) Test
6.4 Measurement of the Resistance of Circuits
6.5 Temperature-rise Tests
6.6 Short-time Withstand Current and Peak Withstand Current Tests
6.7 Verification of the Protection
6.8 Tightness Tests
6.9 Electromagnetic Compatibility Tests (EMC)
6.10 Additional Tests on Auxiliary and Control Circuits
6.11 X-ray Test Procedure of Vacuum Disconnecting Device
7 Routine Tests
7.1 Dielectric Test on the Main Circuit
7.2 Tests on Auxiliary and Control Circuits
7.3 Measurement of the Resistance of the Main Circuit
7.4 Tightness Test
7.5 Design and Visual Checks
7.6 Mechanical Operation and Mechanical Characteristic Test
8 Guide to the Selection of Switchgear and Controlgear
9 Information to be Given with Enquiries, Tenders and Orders
10 Rules for Transport, Storage, Installation, Operation and Maintenance
10.1 Conditions during Transport, Storage and Installation
10.2 Installation
10.3 Operation
10.4 Maintenance
11 Safety
11.1 Electrical Aspects
11.2 Mechanical Aspects
11.3 Thermal Aspects
11.4 Operation Aspects
12 Environmental Impact of Products
Annex A (Normative) Identification of Test Specimens
Annex B (Normative) Determination of The Equivalent r.m.s. Value of A Short-Time Current During A Short Circuit of A Given Duration
Annex C (Normative) Method for the Weatherproofing Test for Outdoor Switchgear and Controlgear
Annex D (Informative) Tightness (Information, Example and Guidance)
Annex E (Informative) Bibliography
Annex F (Informative) Electromagnetic Compatibility Site Measurements
Annex G (Informative) Methods of Using Resistance Changes to Measure the Coil Temperature Rise
Annex H (Normative ) Condensation Test Method of Switchgear and Controlgear
