DL/T 402-2007
Specification of high-voltage alternating-current circuit-breakers (English Version)
- Standard No.
- DL/T 402-2007
- Language
- Chinese, Available in English version
- Release Date
- 2007
- Published By
- Professional Standard - Electricity
- Status
- 2016-07
- Replace By
- DL/T 402-2016
- Latest
- DL/T 402-2016
- Replace
- DL/T 402-1999
- Scope
- This standard is applicable to AC circuit breakers designed and installed indoors or outdoors and operating in systems with a frequency of 50Hz and a nominal voltage of 6kV to 1000kV. This standard only applies to three-pole circuit breakers in three-phase systems and single-pole circuit breakers in single-phase systems. Two-stage circuit breakers used in single-phase systems and when used at frequencies below 50 Hz shall comply with the agreement between the manufacturer and the user. This standard also applies to the operating mechanism of circuit breakers and their auxiliary equipment. This standard does not involve circuit breakers that rely solely on manual operation of the closing mechanism, because it cannot specify the rated short-circuit closing current, and from a safety perspective, this method of manual operation is not recommended. This standard does not cover circuit breakers in mobile power stations for electric traction equipment, which are covered by IEC 60077 [4]. Generator circuit breakers installed between the generator and the step-up transformer are not included in the scope of this standard. Inductive load switching is covered by IEC 62271-301. Except for single-pole automatic reclosing circuit breakers, circuit breakers with predetermined pole-to-pole non-periodicity are not included in the scope of this standard. This standard does not cover self-tripping circuit breakers with mechanical tripping devices or devices that cannot fail. Bypass circuit breakers connected in parallel with line series capacitors and their protective equipment are not included in the scope of this standard, they are covered in IEC 60143-2 [6].
DL/T 402-2007 Referenced Document
- DL/T 404-1997 Indoor AC high voltage switchgear panel
- DL/T 486-2000 Specifications for HV AC disconnectors and earthing switches
- DL/T 593-2006 Common specifications for high-voltage switchgear and controlgear standards
- DL/T 618-1997 Code for hand-over test of gas-insulated metal-enclosed switchgear on site
- DL/T 690-1999 Synthetic testing of high-voltage alternating current circuit-breakers
- GB 2536-1990 Transformer oils
- GB 4208-1993 Degrees of protection provided by enclosure (IP code)
- GB/T 12022-2006 Sulphur hexafluoride for industrial use
- GB/T 14598.7-1995 Electrical relays. Part 3: Single input energizing quantity measuring relays with dependent or independent time
- GB/T 16927.1 High-voltage test techniques.Part 1:General definitions and test requirements*， 2011-12-30 Update
- GB/T 16927.2 High-voltage test techniques.Part 2:Measuring systems*， 2013-02-07 Update
- GB/T 16927.3 High voltage test techniques.Part 3:Definitions and requirements for on-site testing*， 2010-11-10 Update
- GB/T 16927.4 High voltage and high current test techniques.Part 4: Definitions and require.nents for test currents and measuring systems*， 2014-05-06 Update
- GB/T 2900.20-1994 Electrotechnical terminology.High-voltage switchgear
- GB/T 2900.50-1998 Electrotechnical terminology. Generation, transmission and distribution of electricity--General
- GB/T 311.2-2002 Insulation co-ordination Part 2: Application guide for insulation co-ordination for high voltage transmission and distribution equipment
- GB/T 4109-1999 Technical specification of high voltage bushing
- GB/T 762-2002 Standard current ratings
- GB/T 8905-1996 The guide for processing and measuring SF6 gas in power apparatus
DL/T 402-2007 history
- 2016 DL/T 402-2016 High-voltage alternating-current circuit-breakers (IEC 62271-100: 2008 High-voltage switchgear and controlgear.Part 100: Alternating-current circuit-breakers, MOD)
- 2007 DL/T 402-2007 Specification of high-voltage alternating-current circuit-breakers
- 1999 DL/T 402-1999 High-voltage alternating current circuit-breakers
