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Outdoor bushings for 24 kV and 36 kV and for 5 kA and 8 kA, for liquid filled transformers
60.55 Ratification completed (DOR)
Power transformers - Additional European requirements - Part 1-1: Common part - General requirements
10.99 New project approved
Power transformers - Additional European requirements - Part 2-3: Medium power transformer - Accessories
60.55 Ratification completed (DOR)
Power transformers - Additional European requirements - Part 2-4: Medium power transformer - Special tests
60.55 Ratification completed (DOR)
Power transformers - Additional European requirements - Part 2-6: Medium power transformers - Non-conventional magnetic steel technology
60.55 Ratification completed (DOR)
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 3-4: Large power transformer - Special tests for corrugated tank and radiators
60.55 Ratification completed (DOR)
Connecting terminal flags for bushings from 250A to 4 000 A for insulating liquid filled transformers
40.20 DIS ballot initiated
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 19-1: Rules for the determination of uncertainties in the measurement of the losses on power transformers
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
40.60 Close of voting
Power transformers - Part 25: Neutral grounding resistors
50.60 Close of voting. Proof returned by secretariat
Power transformers - Part 4: Guide to the lightning impulse and switching impulse testing - Power transformers and reactors
10.99 New project approved
Synthetic organic esters for electrical purposes - Guide for maintenance of transformer esters in equipment
10.99 New project approved
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
40.20 DIS ballot initiated
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
40.20 DIS ballot initiated
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