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Power transformers - Part 20: Energy efficiency
10.99 New project approved
Corrigendum 1 - Power transformers - Part 20: Energy efficiency
10.99 New project approved
Power transformers - Part 21: Standard requirements, terminology, and test code for step-voltage regulators
10.99 New project approved
Power transformers - Part 23: DC magnetic bias suppression devices
10.99 New project approved
Power transformers - Part 26: Functional requirements of insulating liquids for use in power transformers
10.99 New project approved
Power transformers - Part 4: Lightning impulse and switching impulse tests of power transformers and reactors
50.60 Close of voting. Proof returned by secretariat
Power transformers - Part 57-129: Transformers for HVDC applications
20.99 WD approved for registration as CD
Power transformers - Part 57-129: Transformers for HVDC applications
10.99 New project approved
Explosive atmospheres - Part 0: Equipment - General requirements
50.60 Close of voting. Proof returned by secretariat
Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"
50.60 Close of voting. Proof returned by secretariat
Explosive atmospheres - Part 10-2: Classification of areas - Explosive dust atmospheres
50.60 Close of voting. Proof returned by secretariat
Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres
40.60 Close of voting
Explosive atmospheres - Part 101: Principles of explosion protection
40.20 DIS ballot initiated: 12 weeks
mendment 1 - Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
40.20 DIS ballot initiated: 12 weeks
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
10.99 New project approved
Corrigendum 1 - Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
10.99 New project approved
Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and artificially ventilated room "v"
40.60 Close of voting
Explosive atmospheres - Part 15: Equipment protection by type of protection "n"
40.60 Close of voting