BS 5611:1978
Current
The latest, up-to-date edition.
Application guide for on-load tap-changers
Hardcopy , PDF
English
10-31-1978
National foreword
Cooperating organizations
1. Scope
2. Selection of a tap-changer
2.1 General remarks
2.2 Insulation level
2.3 Current
2.4 Breaking capacity
2.5 Number of tapping positions
2.6 Discharge problems with change-over selectors
2.7 Mechanical life
2.8 Motor-drive mechanism
2.9 Pressure and vacuum tests
2.10 Low-temperature conditions
2.11 Continuous operation
3. Location of oil-immersed tap-changer components
3.1 Tap selectors
3.2 Diverter and selector switches
3.3 Oil level alarm contacts
4. Field service
4.1 Safety of operation
4.2 Parallel operation
4.3 Contact erosion and oil contamination
5. Information required with enquiry or order
5.1 Rating and general data
5.2 Insulation level
5.3 Pressure, vacuum and temperature requirements
5.4 Special
5.5 Fittings
5.6 Motor-drive mechanism
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