GB/T 25121-2010
Railway applications.Rolling stock equipment.Capacitors for power electronics (English Version)

Standard No.

GB/T 25121-2010

Language

Chinese, Available in English version

Release Date

2010

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2019-07

Replace By

GB/T 25121.1-2018

Latest

GB/T 25121.1-2018

Scope

This standard applies to power electronic capacitors used in rail transit rolling stock. The rated voltage of capacitors covered by this standard is up to 10000V. The operating frequency of systems employing such capacitors is usually below 2500 Hz, while the pulse frequency can be as high as several kilohertz and in some cases may exceed 10000 Hz. Capacitors are divided into AC capacitors and DC capacitors. The capacitor is installed in the housing as a component. This standard does not apply to the following capacitors: capacitors for induction heating devices with a frequency between 40Hz and 24000Hz (see GB/T 3984.1 and GB/T 3984.2); capacitors for AC motors and similar capacitors (see GB/T 3667.1); Capacitors used in circuits for suppressing one or more harmonics in power supply networks; small AC capacitors for fluorescent lamps and discharge lamps (see GB 18489 or GB/T 18504); capacitors for suppressing electromagnetic interference ( See GB/T 14472); Parallel capacitors for AC power systems with rated voltage above 1 000 V (see GB/T 11024.1, GB/T 11024.2); Self-healing parallel capacitors for AC power systems with rated voltage 1 000 V and below Power capacitors (see GB/T 12747.1, GB/T 12747.2); non-self-healing parallel power capacitors for AC power systems with a rated voltage of 1000 V and below (see GB/T 17886.1, GB/T 17886.2 and GB/T 17886.3) ; Electronic capacitors used in non-main circuits; series capacitors for power systems (see GB/T 6115.1, GB/T 6115.2 and GB/T 6115.3); coupling capacitors and capacitive voltage dividers (see GB/T 19749); Requires energy storage/high current discharge, such as capacitors in photocopiers and laser machines; capacitors for microwave ovens. Examples are given in Chapter 9.

GB/T 25121-2010 Referenced Document

• GB 13539.1 Low-voltage fuses.Part 1:General requirements*， 2015-09-11 Update
• GB/T 16935.1 Insulation coordination of equipment within low-voltage power supply systems Part 1: Principles, requirements and tests*， 2023-09-07 Update
• GB/T 21563 Railway applications.Rolling stock equipment.Shock and vibration tests*， 2018-06-07 Update
• GB/T 2423.22-2002 Environmental testing for electric and electronic products--Part 2: Test methods Test N: Change of temperature
• GB/T 2423.28 Environmental testing for electric and electronic products.Part2:Test methods-Test T:Soldering
• GB/T 2423.3 Environmental testing—Part 2：Testing method—Test Cab:Damp heat,steady state*， 2016-12-13 Update
• GB/T 4798.5 Environmental conditions existing in the application of electric and electronic products.Section 5: Ground vehicle installations

GB/T 25121-2010 history

• 2018 GB/T 25121.1-2018 Railway applications—Rolling stock equipment—Capacitors for power electronics—Part 1: Paper/plastic film capacitors
• 2010 GB/T 25121-2010 Railway applications.Rolling stock equipment.Capacitors for power electronics