1 Scope
2 Normative references
3 Definitions
4 Service requirements
5 Characteristics of the unit
5.1 Enumeration of the characteristics
5.2 Type of unit
5.3 Rated values
5.4 Class of use
5.5 Control circuits
5.6 Auxiliary contacts and circuits
6 Construction
6.1 General
6.2 Unit enclosures
6.3 Temperature-rises
6.4 Dielectric strength
6.5 Electrical and mechanical endurance
6.6 Operation
6.7 Corrosion protection
6.8 Noise emission
6.9 Cooling
6.10 Servo-control (where applicable)
6.11 Other facilities
7 Information and marking
7.1 Information
7.2 Marking
8 Tests
8.1 General
8.2 Applicable tests and test sequence
8.3 Performance of tests
Annex A (informative) Information required
A.1 General
A.2 Procurement specification
A.3 Manufacturer's specification