NB/T 31050-2014
Evaluation method of electrical insulation systems for wind turbine generator (English Version)

Standard No.

NB/T 31050-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

Professional Standard - Energy

Status

Be replaced 2021-10

Replace By

NB/T 31050-2021

Latest

NB/T 31050-2021

Scope

This standard stipulates the assessment test methods for single-factor aging of wind turbine insulation systems such as electricity, heat and environment, and recommends the assessment test methods for multi-factor aging of wind turbine insulation systems. This standard applies to grid-connected wind turbines with rated voltages of 6.6kV and below.

NB/T 31050-2014 Referenced Document

• GB/T 11026.4 Electrical insulating materials.Thermal endurance properties.Part 4:Ageing ovens.Single-chamber ovens
• GB/T 17948 Functional Evaluation of Insulation systems for rotating electrical machines-General guidelines
• GB/T 17948.1 Rotating electrical machines.Functional evaluation of insulation systems.Test procedures for wire-wound windings.Thermal evaluation and classification*， 2018-07-13 Update
• GB/T 17948.3 Rotating electrical machines—Functional evaluation of insulation systems—Test procedures for form-wound windings—Thermal evaluation and classification of insulation systems used in rotating machines*， 2017-11-01 Update
• GB/T 17948.4-2006 Functional evaluation of insulation systems for rotating electrical machines.Test procedures for form-wound windings.Elactrical evaluation of insulation systems used in machines up to and including 50MVA and 15kV
• GB/T 17948.5 Rotating electrical machines.Functional evaluation of insulation systems.Test procedures for form-wound windings.Multifactor evaluation by endurance under simultaneous thermal and electrical stresses*， 2016-02-24 Update
• GB/T 17948.6 Rotating electrical machines.Functional evaluation of insulation systems.Test procedures for form-wound windings.Evaluation of thermomechanical endurance of insulation systems*， 2018-07-13 Update
• GB/T 20112 Evaluation and qualification of electrical insulation systems*， 2015-07-03 Update
• GB/T 22566.1 Electrical stresses induced by repetitive pulses in electrical insulation systems - Part 1: General method for electrical aging assessment
• GB/T 22720.1 Rotating electrical machines—Qualification and quality control tests of partial discharge free electrical insulation systems (Type I) used in rotating electrical machines fed from voltage converters*， 2017-11-01 Update
• GB/T 22720.2 Rotating electrical machines—Qualification tests for the partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters*， 2019-06-04 Update
• GB/T 23642-2009 Electrical insulating materials and systems.Electrical measurement of partial discharges(PD) under short rise time and repetitive voltage impulses
• GB/T 2421.1-2008 Environmental testing for electric and electronic products.General and guidance
• GB/T 2423.10 Environmental testing—Part 2:Test methods—Test Fc:Vibration(sinusoidal)*， 2019-06-04 Update
• GB/T 2423.17 Environmental testing for electric and electronic products.Part 2:Test method.Test Ka:Salt mist
• GB/T 2423.21 Environmental testing for electric and electronic products.Part 2 Test methods Test M:Low air pressure
• GB/T 2423.22-2012 Environmental testing.Part 2:Test methods.Test N:Change of temperature
• GB/T 2423.4 Environmental testing for electrical and electronic products - Part 2: Test method Test Db alternating damp heat (12h + 12h cycle)

NB/T 31050-2014 history

• 2021 NB/T 31050-2021 Assessment methods for wind turbine insulation systems
• 2014 NB/T 31050-2014 Evaluation method of electrical insulation systems for wind turbine generator