Bulgarian Institute for Standardization
Standards – always a step ahead
Phone: +359 2 8174 523, +359 2 8174 504
E-mail: info@bds-bg.org
1797 Sofia, 13 "Lachezar Stanchev" Str., "Izgrev" Complex
ID number: 175079183, VAT number: BG175079183
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Projects and standards

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

40.20 DIS ballot initiated

ТК-79 more

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

45.99 Dispatch of FV draft to CCMC

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

40.60 Close of voting

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

45.99 Dispatch of FV draft to CCMC

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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

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Power transformers - Part 1: General

10.99 New project approved

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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)

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

10.99 New project approved

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

40.60 Close of voting

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Power transformers - Part 6: Reactors

10.99 New project approved

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Synthetic esters - Guidelines for maintenance and use in electrical equipment

40.20 DIS ballot initiated

ТК-67 more

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

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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

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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

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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

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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

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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

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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

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