1 - AS 2086-1995 A.C. METAL-ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1kV AND UP TO AND INCLUDING 72.5 kV
4 - PREFACE
6 - CONTENTS
8 - SECTION ONE - GENERAL
8 - 1. Scope
8 - SECTION TWO - SERVICE CONDITIONS
8 - 2. Nominal and special service conditions
9 - SECTION THREE - TERMS AND DEFINITIONS
9 - 3. Definitions
9 - 3.101 Switchgear and controlgear
9 - 3.102 Metal-enclosed switchgear and controlgear
10 - 3.103 Transport unit
10 - 3.104 Functional unit
10 - 3.105 Enclosure
10 - 3.106 Compartment
10 - 3.107 Gas-filled compartment
10 - 3.108 Component
10 - 3.109 Partition
11 - 3.110 Shutter
11 - 3.111 Bushing
11 - 3.112 Removable part
11 - 3.113 Withdrawable part
11 - 3.114 Segregation (of conductors)
11 - 3.115 Service position (connected position)
11 - 3.116 Earthing position
11 - 3.117 Test position (of a withdrawable part)
11 - 3.118 Disconnected position (of a withdrawable part)
11 - 3.119 Removed position (of a removable part)
12 - 3.120 Main circuit
12 - 3.121 Auxiliary circuit
12 - 3.122 Rated value
12 - 3.123 Degree of protection
12 - 3.124 Ambient air temperature (of metal-enclosed switchgear and controlgear)
12 - 3.125 Disruptive discharge
12 - 3.126 Minimum functional pressure (of gas-filled compartments)
12 - 3.127 Design pressure (of gas-filled compartments)
12 - 3.128 Design temperature (of gas-filled compartments)
13 - SECTION FOUR - RATED CHARACTERISTICS
13 - 4. Rating
13 - 4.1 Rated voltage
13 - 4.2 Rated insulation level
13 - 4.3 Rated Frequency
13 - 4.4 Rated normal current and temperature rise
13 - 4.4.1 Rated normal current
14 - 4.4.2 Temperature rise
14 - 4.5 Rated short-time withstand current
14 - 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 operation
14 - 4.101 Rated filling pressure (of gas-filled compartments)
14 - SECTION FIVE - RULES FOR DESIGN AND CONSTRUCTION
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 - 5.3.1 Earthing of the main circuit
15 - 5.3.2 Earthing of the enclosure
16 - 5.4 Auxiliary equipment
16 - 5.5 Dependent power closing
16 - 5.6 Stored energy closing
16 - 5.7 Operating of releases
16 - 5.8 Low and high pressure interlocking devices
16 - 5.9 Nameplates
17 - 5.101 Degree of protection and internal fault
18 - 5.102 Enclosure
20 - 5.103 Partitions and shutters
21 - 5.104 Pressure relief of gas-filled compartments
21 - 5.105 Disconnectors and earthing switches
22 - 5.106 Interlocks
23 - 5.107 Provisions for dielectric tests on cables
23 - SECTION SIX - RULES FOR TYPE TESTS
23 - 6. Type tests
24 - 6.1 Dielectric tests
24 - 6.1.1 Ambient air conditions during tests
24 - 6.1.2 Wet test procedure
24 - 6.1.3 Conditions of switchgear and controlgear during dielectric tests
24 - 6.1.4 Application of test voltages and test conditions
25 - 6.1.5 Test voltages
26 - 6.1.6 Lightning and switching impulse voltage tests
26 - 6.1.7 Power-frequency voltage tests on the main circuit
26 - 6.1.8 Artificial pollution tests
26 - 6.1.9 Partial discharge tests
27 - 6.1.10 Dielectric tests on auxiliary and control circuits
27 - 6.2 Radio interference voltage (RIV) tests
27 - 6.3 Temperature-rise tests
27 - 6.4 Measurement of the resistance of the main circuit
27 - 6.5 Short-time and peak withstand current tests
28 - 6.101 Verification of making and breaking capacities
29 - 6.102 Mechanical operation tests
29 - 6.103 Verification of the degree of protection
29 - 6.104 Pressure withstand test for gas-filled compartments
29 - 6.105 Gas tightness tests of gas-filled compartments
30 - 6.106 Measurement of leakage currents
30 - 6.107 Weatherproofing test
30 - 6.108 Arcing due to internal fault
31 - SECTION SEVEN - RULES FOR ROUTINE TESTS
31 - 7. Routine tests
31 - 7.1 Power-frequency voltage tests on the main circuit
31 - 7.2 Dielectric tests on auxiliary and control circuits
31 - 7.3 Measurement of the resistance of the main circuit
32 - 7.101 Partial discharge measurement
32 - 7.102 Mechanical operation tests
32 - 7.103 Pressure tests of gas-filled compartments
32 - 7.104 Gas tightness tests of gas-filled compartments
32 - 7.105 Tests of auxiliary electrical, pneumatic and hydraulic devices
32 - 7.106 Verification of correct wiring
32 - 7.107 Tests after erection on site
33 - 7.108 Measurement of gas condition after filling on site
33 - SECTION EIGHT - GENERAL INFORMATION
33 - 8. Guide to the selection of switching devices for service
33 - 9. Information to be given with enquiries, tenders and orders
33 - 9.101 Information with enquiries and orders
34 - 9.102 Information with tenders
35 - 10. Rules for transport, storage, erection and maintenance
35 - 10.1 Conditions during transport, storage and erection
35 - 10.2 Erection (mounting)
35 - 10.3 Maintenance
37 - Annex AA - Internal fault
38 - AA.1 Introduction
38 - AA.2 Types of accessibility
38 - AA.3 Test arrangements
39 - AA.4 Current and voltage applied
40 - AA.5 Test procedure
41 - AA.6 Assessment of the test
42 - AA.7 Test report
45 - Annex BB - Method of calculating the cross sectional area of bare conductors with regard to thermal stresses due to currents
46 - Annex CC - Recommended method for the weatherproofing test for outdoor metal-enclosed switchgear and controlgear
49 - Annex DD - Guide for voltage tests after erection on site
50 - Annex EE - Rated insulation level for Series II
51 - Annex FF - Partial discharge measurement
51 - FF.1 General
51 - FF.2 Application
52 - FF.3 Test circuits and measuring instruments
52 - FF.4 Test procedure
53 - FF.5 Maximum permissible partial discharge quantity
56 - Annex GG - Gas tightness specifications and tests
56 - INTRODUCTION
56 - GG.1 Scope and object
56 - GG.2 Definitions
58 - GG.3 Specifications for gas tightness
58 - GG.4 Tests
62 - APPENDIX ZZ - LIST OF VARIATIONS BETWEEN THIS STANDARD AND IEC 298
63 - APPENDIX ZA - ITEMS SUBJECT TO AGREEMENT BETWEEN THE MANUFACTURER AND THE USER