IEC 60214-2:2004

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Types of tap-changer
   5.1 General
   5.2 On-load tap-changers
   5.3 Off-circuit tap-changers
   5.4 Liquid-immersed tap-changers
   5.5 Dry-type tap-changers
   5.6 Other types
   5.7 Protective devices
6 Selection of tap-changers
   6.1 General
   6.2 On-load tap-changers
   6.3 Off-circuit tap-changers
7 Location of liquid-immersed tap-changers
   7.1 Tap selectors
   7.2 Diverter and selector switches
8 Fittings
   8.1 Valves, air-release vents and liquid sampling devices
   8.2 Liquid level gauges
   8.3 Low liquid level alarms
   8.4 Nameplate and other plates
   8.5 Devices to aid maintenance
   8.6 Dehydrating breathers
9 Field service (operation, maintenance and monitoring)
   9.1 Operation
   9.2 Maintenance
   9.3 Monitoring in service
10 Information to be provided by the transformer manufacturer
   10.1 Information required at the enquiry or order stage for
        an on-load tap-changer
   10.2 Information required with enquiry or order for
        off-circuit tap-changers
   10.3 Documentation
11 Protection and safety
   11.1 Protection
   11.2 Safety aspects
   11.3 Immersing medium

Assists in the selection of tap-changers designed in accordance with IEC 60214-1 for use in conjunction with the tapped windings of transformers or reactors. Also assists in understanding the various types of tap-changers and their associated equipment available. Covers both on-load tap-changers and off-circuit tap-changers.