NBN EN 60214 : 1998

SECTION ONE - GENERAL
1 Scope
2 Service conditions
3 Information required with enquires and orders
SECTION TWO - DEFINITIONS
4 Definitions relating to on-load tap-changers (excluding
    motor-drive mechanisms)
5 Definitions relating to motor-drive mechanisms
SECTION THREE - REQUIREMENTS FOR ON-LOAD TAP-CHANGERS
6 Rating
7 Design, construction and safety
8 Type tests
9 Routine tests
10 Nameplate and manufacturer's handbook
SECTION FOUR - REQUIREMENTS FOR MOTOR-DRIVE MECHANISMS FOR
ON-LOAD TAP-CHANGERS
11 Design, construction and safety
12 Type tests
13 Routine tests
14 Nameplate and manufacturer's handbook
APPENDIX A - Supplementary information on switching duty
             relating to tap-changers with resistor
             transition only
APPENDIX B - Method of determining the equivalent temperature
             of the transition resistor using power pulse
             currents
APPENDIX C - Simulated circuits for service duty and breaking
             capacity tests
ANNEX ZA Normative references to international publications
             with their corresponding European publications

Applicable to on-load tap-changers for power transformers together with their motor-drive mechanisms. Concerned chiefly to tap-changers immersed in transformer oil in accordance with IEC 296, but could be used for gas-insulated tap-changers where conditions apply.