1 General
1.1 Scope
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
3.4 Switching devices
3.5 Parts of by-pass switches
3.6 Operation
3.7 Characteristic quantities
3.8 Definitions related to series capacitor banks
3.9 Index of definitions
4 Ratings
4.1 Rated voltage (U[r])
4.2 Rated insulation level
4.3 Rated frequency (f[r])
4.4 Rated normal current (I[r]) and temperature rise
4.5 Rated short-time withstand current (I[k])
4.6 Rated peak withstand current (I[p])
4.7 Rated duration of short circuit (t[k])
4.8 Rated supply voltage of closing and opening
devices and of auxiliary and control circuits (U[a])
4.9 Rated supply frequency of closing and opening
devices and auxiliary circuits
4.10 Rated pressures of compressed gas supply for
insulation, operation and/or by-passing and
insertion
4.101 Rated operating sequence
4.102 Rated by-pass making current (IBP)
4.104 Rated reinsertion voltage (UINS)
4.105 Rated time quantities
4.106 Number of mechanical operations
5 Design and construction
5.1 Requirements for liquids in by-pass switches
5.2 Requirements for gases in by-pass switches
5.3 Earthing of by-pass switches
5.4 Auxiliary equipment
5.5 Dependent power operation
5.6 Stored energy operation
5.7 Independent manual operation
5.8 Operation of releases
5.9 Low- and high-pressure interlocking 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
5.101 Requirements for simultaneity within a pole
5.102 General requirement for operation
5.103 Pressure limits of fluids for operation
5.104 Vent outlets
6 Type tests
6.1 General
6.2 Dielectric tests
6.3 Radio interference voltage (r.i.v.) tests
6.4 Measurement of the resistance of the main circuit
6.5 Temperature-rise tests
6.6 Short-time withstand current and peak withstand
current tests
6.7 Verification of the degree of protection
6.8 Tightness tests
6.9 Electromagnetic compatibility (EMC) tests
6.101 Mechanical and environmental tests
6.102 Miscellaneous provisions for by-pass making and
insertion tests
6.103 Invalid tests
6.104 Sequence of the tests
6.105 By-pass making current test-duty
6.106 Insertion current test-duty
6.107 Criteria to pass the test duties
7 Routine tests
7.1 Dielectric test on the main circuit
7.2 Dielectric test 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
8 Guide to the selection of by-pass switches for service
9 Information to be given with enquiries, tenders and
orders
9.101 Information to be given with enquiries and orders
9.102 Information to be given with tenders
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
Annex A (normative) Tolerances on test quantities during
type tests
Annex B (normative) Records and reports of type tests
Annex C (informative) List of symbols and abbreviations
used
Annex D (informative) Examples of by-pass switch ratings
Annex E (informative) By-pass switches used as the primary
by-passing devices
Annex F (informative) Explanatory note regarding transient
recovery voltage during reinsertion
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
Bibliography