FOREWORD
1 General
1.1 Scope
1.2 Normative references
2 Normal and special service conditions
3 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
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
6 Type tests
6.1 General
6.1.1 Grouping of tests
6.1.2 Information for identification of specimens
6.1.3 Information to be included in type test reports
6.2 Dielectric tests
6.2.1 Ambient air conditions during tests
6.2.2 Wet test procedure
6.2.3 Condition of by-pass switch during dielectric
tests
6.2.4 Criteria to pass the test
6.2.5 Application of test voltage and test conditions
6.2.6 Tests of by-pass switches of U[re] <= 245 kV or
U[rp] <= 245 kV
6.2.7 Tests of by-pass switches of U[re] > 245 kV or
U[rp] > 245 kV
6.2.8 Artificial pollution tests
6.2.9 Partial discharge tests
6.2.10 Tests on auxiliary and control circuits
6.2.11 Voltage test as a condition check
6.3 Radio interference voltage (r.i.v.) tests
6.4 Measurement of the resistance of the main circuit
6.5 Temperature-rise tests
6.5.1 Conditions of the by-pass switch to be tested
6.5.2 Arrangement of the equipment
6.5.3 Measurement of the temperature and the
temperature rise
6.5.4 Ambient air temperature
6.5.5 Temperature-rise tests of the auxiliary and
control equipment
6.5.6 Interpretation of the temperature-rise tests
6.6 Short-time withstand current and peak withstand current
tests
6.6.1 Arrangement of the by-pass switch and of the
test circuit
6.6.2 Test current and duration
6.6.3 Behaviour of the by-pass switch during test
6.6.4 Conditions of the by-pass switch after test
6.7 Verification of the degree of protection
6.7.1 Verification of the IP coding
6.7.2 Mechanical impact test
6.8 Tightness tests
6.9 Electromagnetic compatibility (EMC) tests
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
8 Guide to the selection of by-pass switches for service
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
Annex A (normative) Tolerances on test quantities during type
tests
Annex B (normative) Records and reports of type tests
B.1 Information and results to be recorded
B.2 Information to be included in type test reports
B.2.1 General
B.2.2 Apparatus tested
B.2.3 Rated characteristics of by-pass switch,
including its operating devices and auxiliary
equipment
B.2.4 Test conditions (for each series of tests; if
applicable)
B.2.5 Short-time withstand current and peak withstand
current test
B.2.6 No-load operation
B.2.7 By-pass making current test-duty
B.2.8 Insertion current test-duty
B.2.9 Oscillographic and other records
Annex C (informative) List of symbols and abbreviations used
Figures
Tables