Bulgarian Institute for Standardization
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Criteria: 29.18

Power transformers - Part 25: Neutral grounding resistors

50.60 Close of voting. Proof returned by secretariat

ТК-79 more

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

10.99 New project approved

ТК-79 more

Synthetic organic esters for electrical purposes - Guide for maintenance of transformer esters in equipment

10.99 New project approved

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

ТК-79 more

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

ТК-79 more

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

ТК-79 more

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

ТК-79 more

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

ТК-79 more

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

50.60 Close of voting. Proof returned by secretariat

ТК-79 more

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors

50.60 Close of voting. Proof returned by secretariat

ТК-79 more

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers for general applications

60.55 Ratification completed (DOR)

ТК-79 more

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers for general applications

60.55 Ratification completed (DOR)

ТК-79 more

Power transformers - Part 1: General

60.60 Standard published

ТК-79 more

Power transformers - Part 10: Determination of sound levels

60.60 Standard published

ТК-79 more

Power transformers - Part 13: Self-protected liquid-filled transformers

60.60 Standard published

ТК-79 more

Power transformers - Part 14: Liquid-immersed power transformers using high-temperature insulation materials

60.60 Standard published

ТК-79 more

Power transformers - Part 16: Transformers for wind turbines applications

60.60 Standard published

ТК-79 more

Power transformers - Part 18: Measurement of frequency response

60.60 Standard published

ТК-79 more