Clause
1. Scope
2. Normal and special service conditions
3. Definitions
3.101 General terms
3.102 Switching devices
3.103 Parts of switching devices
3.104 Operation (of a mechanical switching device)
3.105 Characteristic quantities
4. Rating
4.1 Rated voltage
4.2 Rated insulation level
4.3 Rated frequency
4.4 Rated normal current and temperature rise
4.5 Rated short-time withstand current
4.6 Rated peak withstand current
4.7 Rated duration of short circuit
4.8 Rated supply voltage of closing and opening devices
and auxiliary circuits
4.9 Rated supply frequency of operating devices and
auxiliary circuits
4.10 Rated pressure of compressed gas supply for operation
4.101 Rated short-circuit making current
4.102 Rated contact zone
4.103 Rated mechanical terminal load
4.104 Rated values of maximum force required for manual
operation (under consideration)
4.105 Behaviour when carrying rated peak withstand current
and rated short-time withstand current
4.106 Behaviour of earthing switches when making
short-circuit currents
4.107 Co-ordination of rated voltages, rated normal
currents and rated peak withstand currents
5. Design and construction
5.1 Requirements for liquids in disconnectors and
earthing switches
5.2 Requirements for gases in disconnectors and earthing
switches
5.3 Earthing of disconnectors and earthing switches
5.4 Auxiliary equipment
5.5 Dependent power closing
5.6 Stored energy closing
5.7 Operation of releases
5.8 Low and high pressure interlocking devices
5.9 Nameplates
5.101 Special requirements for earthing switches
5.102 Requirements in respect of the isolating distance of
disconnectors
5.103 Mechanical strength
5.104 Position of the movable contact system and its
indicating or signalling devices
6. Type tests
6.1 Dielectric tests
6.2 Radio interference voltage (r.i.v.) tests
6.3 Temperature-rise tests
6.4 Measurement of the resistance of the main circuit
6.5 Short-time and peak withstand current tests
6.101 Tests to prove the short-circuit making performance
of earthing switches
6.102 Operating and mechanical endurance tests
6.103 Operation under severe ice conditions
6.104 Operation at the temperature limits
7. Routine tests
7.1 Power-frequency voltage withstand dry tests on the
main circuit
7.2 Voltage withstand tests on auxiliary and control
circuits
7.3 Measurement of the resistance of the main circuit
7.101 Mechanical operating tests
8. Guide to the selection of switching devices for
service
8.101 General
8.102 Selection of rated vales for normal service
conditions
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, erection and
maintenance
10.1 Conditions during transport, storage and erection
10.2 Erection
10.3 Maintenance
Figures
Annex ZA: Other international publications quoted in this
standard with the references of the relevant
European publications