1 - AS 2263-1995 GAS-INSULATED METAL-ENCLOSED SWITCHGEAR FOR RATED VOLTAGES OF 72.5 kV AND ABOVE
4 - PREFACE
6 - CONTENTS
9 - 1 Scope
9 - 2 Normal and special service conditions
9 - 3 Definitions
12 - 4 Rating
12 - 4.1 Rated Voltage
12 - 4.2 Rated insulation level
13 - 4.3 Rated frequency
13 - 4.4 Rated normal current and temperature rise
13 - 4.5 Rated short-time withstand current
13 - 4.6 Rated peak withstand current
14 - 4.7 Rated duration of short-circuit
14 - 4.8 Rated supply voltage of closing and opening devices and auxiliary circuits
14 - 4.9 Rated supply frequency of operating devices and auxiliary circuits
14 - 4.10 Rated pressure of compressed gas supply for operating mechanisms
14 - 4.101 Rated density of gas for insulation
14 - 5 Design and construction
15 - 5.1 Requirements for liquids in switchgear and controlgear
15 - 5.2 Requirements for gases in switchgear and controlgear
15 - 5.3 Earthing
15 - 5.4 Auxiliary equipment
15 - 5.5 Dependent power closing
16 - 5.6 Stored energy closing
16 - 5.7 Operation of releases
16 - 5.8 Low and high pressure interlocking devices
16 - 5.9 Nameplates
16 - 5.101 Degree of protection
17 - 5.102 Internal fault
19 - 5.103 Enclosures
20 - 5.104 Partitions
21 - 5.105 Pressure relief
21 - 5.106 Disconnectors and earthing switches
22 - 5.107 Interlocks
22 - 5.108 Noise
23 - 5.109 Provisions for dielectric tests on cables
23 - 6 Type tests
24 - 6.1 Dielectric tests
30 - 6.2 Radio interference voltage (RIV) tests
30 - 6.3 Temperature-rise tests
30 - 6.4 Measurement of the resistance of the main circuit
31 - 6.5 Short-time and peak withstand current tests
32 - 6.101 Verification of making and breaking capacities
32 - 6.102 Mechanical operation tests
33 - 6.103 Verification of the degree of protection for auxiliary circuits and moving parts
33 - 6.104 Proof tests for enclosures
34 - 6.105 Weatherproofing test
34 - 6.106 Test under conditions of arcing due to an internal fault
35 - 6.107 Thermal stability test
35 - 6.108 Operation tests at limit temperatures
36 - 6.109 Gas tightness tests
36 - 7 Routine tests
37 - 7.1 Power-frequency voltage tests on the main circuit
37 - 7.2 Dielectric tests on auxiliary and control circuits
37 - 7.3 Measurement of the resistance of the main circuit
37 - 7.101 Partial discharge measurement
37 - 7.102 Pressure tests of enclosures
37 - 7.103 Gas tightness tests
38 - 7.104 Mechanical operation tests
38 - 7.105 Tests of auxiliary electrical, pneumatic and hydraulic devices
38 - 7.106 Verification of the correct wiring
38 - 7.107 Tests after erection on site
43 - 8 Guide to the selection of the switchgear for service
44 - 9 Information to be given with enquiries, tenders and orders
44 - 9.101 Information with enquiries and orders
45 - 9.102 Information with tenders
46 - 10 Rules for transport, storage, erection and maintenance
46 - 10.1 Conditions during transport, storage and erection
46 - 10.2 Erection
46 - 10.3 Maintenance
47 - Annex AA - Recommended method for the weatherproofing test for outdoor gas-insulated metal-enclosed switchgear
50 - Annex BB - Methods for testing gas-insulated metal-enclosed switchgear under conditions of arcing due to an internal fault
50 - BB1 Introduction
50 - BB2 Short-circuit current arcing test
52 - BB3 Composite verification by calculation and separate tests
53 - Annex CC - Technical and practical considerations of site testing
53 - CC1 Test voltage generators
53 - CC2 Locating discharges
54 - CC3 Special test procedures
54 - CC4 Partial discharge measurements
55 - CC5 Electrical conditioning
55 - CC6 Repetition tests
56 - Annex DD - Gas tightness specifications and tests
56 - DD1 Scope and object
56 - DD2 Definitions
58 - DD3 Specifications for gas tightness
59 - DD4 Tests
63 - Amendment 1