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Environmental testing - Part 3-6: Supporting documentation and guidance - Confirmation of the performance of temperature/ humidity chambers
40.99 Full report circulated: DIS approved for registration as FDIS
Insulation co-ordination - Part 1: Definitions, principles and rules
40.60 Close of voting
Insulation co-ordination - Part 14: Application procedures for AC/DC filters
40.20 DIS ballot initiated: 12 weeks
Insulation co-ordination — Part 15: Insulation co-ordination for DC transmission lines
30.20 CD study/ballot initiated
Insulation co-ordination - Part 2: Application guidelines
30.60 Close of voting/ comment period
Instructions for simulation-based insulation coordination and modelling of electrical networks
50.00 Final text received or FDIS registered for formal approval
Basic and safety principles for man-machine interface, marking and identification - Coding principles for indicators and actuators
30.60 Close of voting/ comment period
Power transformers - Part 19-2: Rules for the determination of uncertainties in the measurement of the losses of reactors
20.99 WD approved for registration as CD
Power transformers - Part 2: Temperature rise for liquid-immersed transformers
30.99 CD approved for registration as DIS
Power transformers - Part 21: Standard requirements, terminology, and test code for step-voltage regulators
20.99 WD approved for registration as CD
Power transformers - Part 22-1: Power transformer and reactor fittings - Protective devices
20.99 WD approved for registration as CD
Power transformers - Part 22-7: Power transformer and reactor fittings - Accessories and fittings
20.99 WD approved for registration as CD
Power transformers - Part 22-8: Power transformer and reactor fittings - Devices suitable for use in communication networks
20.99 WD approved for registration as CD
Power transformers - Part 4: Lightning impulse and switching impulse tests of power transformers and reactors
60.00 Standard under publication
Power transformers - Part 5: Ability to withstand short circuit
30.60 Close of voting/ comment period
Power transformers - Part 57-129: Transformers for HVDC applications
20.99 WD approved for registration as CD
Technical guideline for the Application, Specification, and Testing of Phase-Shifting Transformers
20.99 WD approved for registration as CD
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