Projects and standards

Power transformers - Additional European requirements - Part 1-1: Common part - General requirements

40.20 DIS ballot initiated

Power transformers - Additional European requirements - Part 3-1: Large power transformer - General requirements

45.99 Dispatch of FV draft to CCMC

Power transformers - Additional European requirements: Part 3-3 Large power transformer - Accessories

40.60 Close of voting

Connecting terminal flags for bushings from 250A to 4 000 A for insulating liquid filled transformers

45.99 Dispatch of FV draft to CCMC

Power transformers - Part 19: Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors

10.99 New project approved

Power transformers - Part 1: General

10.99 New project approved

Power transformers - Part 19-1: Rules for the determination of uncertainties in the measurement of the losses of power transformers

60.55 Ratification completed (DOR)

Power transformers - Part 2: Temperature rise for liquid-immersed transformers

10.99 New project approved

Power transformers - Part 4: Guide to the lightning impulse and switching impulse testing - Power transformers and reactors

40.60 Close of voting

Power transformers - Part 6: Reactors

10.99 New project approved

Synthetic esters - Guidelines for maintenance and use in electrical equipment

40.20 DIS ballot initiated

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications

50.60 Close of voting. Proof returned by secretariat

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-10: Particular requirements and tests for separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 v

40.60 Close of voting

Safety of transformers, reactors, power supply units and combination thereof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage

40.60 Close of voting

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-13: Particular requirements and tests for auto-transformers and power supply units incorporating auto-transformers for general applications

50.60 Close of voting. Proof returned by secretariat

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-14: Particular requirements and tests for variable transformers and power supply units incorporating variable transformers for general applications

40.60 Close of voting

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-15: Particular requirements and tests for isolating transformers for medical IT systems for the supply of medical locations

50.60 Close of voting. Proof returned by secretariat

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-16: Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units for general applications

50.60 Close of voting. Proof returned by secretariat