Detail of DL/T 593-2006

Introduction of DL/T 593-2006

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 of DL/T 593-2006

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