1 Scope
2 Normative references
3 Service conditions
3.1 Maximum inclination
3.2 Operating pressure
3.3 Sensitivity of the relay contacts to magnetic
fields
3.4 Special mechanical conditions
4 Dimensions
5 Operational performance
5.1 Alarm and trip contacts
5.2 Oil loss from tank
5.3 Latching of trip element
6 Electrical characteristics of switch
6.1 Switch type
6.2 Rated currents
6.3 Breaking and making capacity
7 Mechanical requirements
7.1 Terminal box
7.2 Testing facility
7.3 Gas sampling
7.4 Draining device
7.5 Presence of gas in the relay
7.6 Mounting arrangement
7.7 Pressure and vacuum
8 Nameplate
9 Tests
9.1 Routine tests
9.2 Type tests