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BS EN 62271-104:2015

BS EN 62271-104:2015

$198.66

High-voltage switchgear and controlgear – Alternating current switches for rated voltages higher than 52 kV

Published By Publication Date Number of Pages
BSI 2015 54
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1.1 Scope

Subclause 1.1 of IEC 62271‑1:2007 is not applicable, and is replaced as follows:

This part of IEC 62271 is applicable to three-pole alternating current switches for rated voltages higher than 52 kV, having making and breaking current ratings, for indoor and outdoor installations, and for rated frequencies up to and including 60 Hz.

This standard is also applicable to the operating devices of these switches and to their auxiliary equipment.

NOTE 1

Switches for gas insulated switchgear are covered by this standard.

NOTE 2

Switches having a disconnecting function and called switch-disconnectors are also covered by IEC 62271‑102 .

NOTE 3

Earthing switches are not covered by this standard. Earthing switches forming an integral part of a switch are covered by IEC 62271‑102 .

The main object of this standard is to establish requirements for switches used in transmission and distribution systems. General-purpose switches for this application are designed to comply with the following service applications:

  • arrying rated normal current continuously;

  • carrying short-circuit currents for a specified time;

  • switching of mainly active loads;

  • switching of no-load transformers;

  • switching of the charging current of unloaded cables, overhead lines or busbars;

  • switching of closed-loop circuits;

  • making short-circuit currents.

A further object of this standard is to establish requirements for limited-purpose and special-purpose switches used in transmission and distribution systems.

Limited-purpose switches comply with one or more of the service applications indicated above.

Special-purpose switches may comply with one or more of the service applications indicated above and, in addition, are suitable for one or more of the following applications:

  • switching single capacitor banks;

  • switching back-to-back capacitor banks;

  • switching shunt reactors including secondary or tertiary reactors switched from the primary side of the transformer;

  • applications requiring an increased number of operating cycles;

  • switching under earth fault conditions in non-effectively earthed neutral systems.

1.2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

  • IEC 60050‑441:1984, International Electrotechnical Vocabulary — Chapter 441: Switchgear, controlgear and fuses
  • IEC 60071 (all parts), Insulation co-ordination
  • IEC 60071‑1, Insulation co-ordination — Part 1: Definitions, principles and rules
  • IEC 60270, High-voltage test techniques — Partial discharge measurements
  • IEC 62271‑1:2007, High-voltage switchgear and controlgear — Part 1: Common specifications IEC 62271-1:2007/AMD1:2011
  • IEC 62271‑100:2008, High-voltage switchgear and controlgear — Part 100: Alternating-current circuit-breakers IEC 62271-100:2008/AMD1:2012
  • IEC 62271‑102:2001, High-voltage switchgear and controlgear — Part 102: Alternating current disconnectors and earthing switches IEC 62271-102:2001/AMD1:2011 IEC 62271-102:2001/AMD2:2013
  • IEC 62271‑110:2012, High-voltage switchgear and controlgear — Part 110: Inductive load switching

PDF Catalog

PDF Pages PDF Title
6 English

CONTENTS
10 1 General
1.1 Scope
11 1.2 Normative references
2 Normal and special service conditions
3 Terms and definitions
3.1 General terms
3.2 Assemblies
3.3 Parts of assemblies
12 3.4 Switching devices
13 3.6 Operation
3.7 Characteristic quantities
15 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 (Ir)
4.5 Rated short-time withstand current (Ik)
4.6 Rated peak withstand current (Ip)
4.7 Rated duration of short-circuit (tk)
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
16 4.10 Rated pressure of compressed gas supply for controlled pressure systems
4.11 Rated filling levels for insulation and/or operation
4.101 Rated earth fault breaking current
4.102 Rated short-circuit making current
4.103 Rated mainly active load-breaking current
4.104 Rated closed-loop breaking current
4.105 Rated capacitive switching currents
4.105.1 Rated line-charging breaking current
4.105.2 Rated cable-charging breaking current
4.105.3 Rated single capacitor bank breaking current
4.105.4 Rated back-to-back capacitor bank breaking current
17 4.105.5 Single capacitor bank inrush making current
4.105.6 Rated back-to-back capacitor bank inrush making current
4.105.7 Rated cable and line-charging breaking current under earth fault conditions
4.106 Inductive load switching
4.106.1 Shunt reactor breaking current
4.106.2 Rated no-load transformer breaking current
4.107 Rated mechanical terminal load
4.108 Coordination of rated values for a general-purpose switch
18 4.109 Coordination of rated values for limited-purpose and special-purpose switches
5 Design and construction
5.1 Requirements for liquids in high-voltage switches
5.2 Requirements for gases in high-voltage switches
Tables

Table 1 – Preferred values of line- and cable-charging breaking currents for a general-purpose switch
19 5.3 Earthing of high-voltage switches
5.4 Auxiliary and control equipment
5.5 Dependent power operation
5.6 Stored energy operation
5.7 Independent manual or power operation (independent unlatched operation)
5.8 Operation of releases
5.9 Low- and high-pressure interlocking and monitoring devices
5.10 Nameplates
20 5.11 Interlocking devices
Table 2 – Nameplate information
21 5.12 Position indication
5.13 Degree of protection provided by enclosures
5.14 Creepage distances for outdoor insulators
5.15 Gas and vacuum tightness
5.16 Liquid tightness
5.17 Fire hazard (flammability)
5.18 Electromagnetic compatibility (EMC)
5.19 X-ray emission
5.20 Corrosion
5.101 Closing mechanism
5.102 Mechanical strength
5.103 Position of the movable contact system and its indicating or signalling device
5.103.1 Securing the position
22 5.103.2 Indication of position
5.103.3 Auxiliary contacts for signalling
6 Type tests
6.1 General
23 6.2 Dielectric tests
Table 3 – Type tests
24 6.3 Radio interference voltage (r.i.v.) tests
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-radiation test procedure for vacuum interrupters
6.101 Mechanical operation tests
6.101.1 Arrangement of the switch for tests
25 6.101.2 Tests for general-purpose switches
26 6.101.3 Tests for limited-purpose and special-purpose switches
6.101.4 Condition of switch during and after mechanical operation tests
6.101.5 Operation under severe ice conditions
6.101.6 Static terminal load tests
27 6.102 Miscellaneous provision for making and breaking tests
6.102.1 Arrangement of the switch for tests
28 6.102.2 Behaviour of switch during breaking tests
6.102.3 Condition of switch after breaking tests
6.102.4 Condition of switch during and after short-circuit making tests
29 6.103 Test circuits for making and breaking tests
6.103.1 General
6.103.2 Earthing of test circuit and switch
30 6.103.3 Mainly active load circuit (test duty 1 and test duty 3)
Figures

Figure 1 – Single-phase test circuit for mainly active load current switching for test duties 1 and 3
Figure 2 – Single-phase test circuit for transmission line closed loop and parallel-transformer current switching test, for test duties 2a and 2b
31 Figure 3 – Three-phase test circuit for mainly active load current switching, for test duties 1 and 3
32 Figure 4 – Supply and load side transient for mainly active loadcurrent switching tests (see Table 4)
Table 4 – Supply circuit TRV parameters for mainlyactive load current breaking tests
33 6.103.4 Closed-loop circuits (test duty 2)
Figure 5 – Three-phase test circuit for transmission line closed loop and parallel-transformer current switching test for test duties 2a and 2b
34 Table 5 – TRV parameters for transmission line closed loop current breaking tests
35 Figure 6 – Illustration of the transient associated with transmissionline closed loop current breaking tests (see Table 5)
Table 6 – Test duties for single-phase tests on three-pole switcheshaving a non-simultaneity between poles of 0,25 cycle or less
36 Table 7 – Test duties for single-phase tests on three-pole switches having more than 0,25 cycle non-simultaneity and switches operated pole after pole
37 6.103.5 Test circuits for short-circuit making tests (test duty 6)
Table 8 – TRV parameters for parallel transformer current breaking tests
38 Figure 7 – Three-phase test circuit for short circuit making current test for test duty 6
Figure 8 – Single-phase test circuit for short circuit making current testfor test duty 6
39 6.103.6 Test circuits for breaking tests under earth fault conditions (test duties 7a and 7b)
6.104 Test quantities
6.104.1 Test frequency
6.104.2 Test voltage for breaking tests
Table 9 – Test duties for three-phase tests on three-pole switches
40 6.104.3 Breaking current
41 6.104.4 Test voltage for short-circuit making tests
42 6.104.5 Short-circuit making current
6.105 Capacitive current switching tests
6.105.1 Applicability
43 6.105.2 General
6.105.3 Characteristics of supply circuits
6.105.4 Earthing of the supply circuit
6.105.5 Characteristics of the capacitive circuit to be switched
6.105.6 Waveform of the current
6.105.7 Test voltage
44 6.105.8 Test current
6.105.9 Test duties
45 6.105.10 Tests with specified TRV
6.105.11 Criteria to pass the test
6.106 Inductive load switching (test duty 5)
6.106.1 No-load transformer circuit (test duty 5a)
6.106.2 Shunt-reactor current switching tests (test duty 5b)
46 6.107 Tests for general-purpose switches
47 6.108 Tests for limited-purpose switches
6.109 Tests for special-purpose switches
6.110 Type test reports
48 7 Routine tests
7.1 Dielectric tests on 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
7.101 Mechanical operating tests
49 8 Guide to the selection of high-voltage switches
8.1 Selection of rated values
8.2 Continuous or temporary overload due to changed service conditions
8.101 General
8.102 Conditions affecting application
8.103 Insulation coordination
50 9 Information to be given with enquiries, tenders and orders
9.1 Information with enquiries and orders
9.2 Information with tenders
10 Transport, storage, installation, operation and maintenance
11 Safety
12 Influence of the high-voltage switch on the environment
51 Bibliography

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BS EN 62271-104:2015
$198.66