GB/T 31238-20141000kV current transformers technical specifications (English PDF)
1000KV交流电流互感器技术规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 30, 2014
Implementation date
April 1, 2015
Scope
GB/T 31238-2014 is the English-translated version of 1000KV交流电流互感器技术规范.
GB/T 31238-2014 is the Chinese standard "1000kV current transformers technical specifications". Its scope clause reads: This standard specifies the 1000kV AC system GIS and cannula with an electromagnetic current transformer conditions, ratings, technical performance Requirements, structural requirements and testing and other requirements.
This standard applies to installations for 1000kVGIS and casing for electrical measurement instrumentation and protection equipment with a current transformer. Its clauses include terms and definitions; conditions of use.
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Document preview — GB/T 31238-2014
National Standard of the People's Republic of China
- ICS
- 29.120
- Classification
- K 34
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 conditions of use
- 6 technical performance requirements
- 7 structural requirements
- 8 Test
- 9 packaging, transportation, storage, file storage and factory
1 Scope
This standard specifies the 1000kV AC system GIS and cannula with an electromagnetic current transformer conditions, ratings, technical performance
Requirements, structural requirements and testing and other requirements.
This standard applies to installations for 1000kVGIS and casing for electrical measurement instrumentation and protection equipment with a current transformer.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 1208 current transformer
GB/T 2900.15 Electrotechnical terminology transformers, transformers, regulators and reactors
GB/T 2900.50 Electrotechnical terminology Generation, transmission and distribution of generic terms
GB/T 2900.57 Electrotechnical terminology Generation, transmission and distribution operations
GB/T 11021 electrical insulation thermal resistance rating
GB 16847 protection technology requirements for current transformers for transient performance
GB /Z24836-2009 1100kV gas insulated switchgear equipment specification
GB /Z24843-2009 1000kV auto single-phase oil-immersed power transformers technical specification
3 Terms and Definitions
GB 1208, GB/T 2900.15, GB/T 2900.50, GB/T 2900.57 and GB 16847 and the following definition of terms and definitions
Apply to this document.
4 Conditions of Use
4.1 normal conditions of use
4.1.1 Ambient temperature
Maximum ambient temperature. 40 °C.
Daily average temperature. not exceeding 35 °C.
Minimum ambient temperature. -25 °C, (if necessary, can be -40 °C).
4.1.2 Altitude
Altitude does not exceed 1000m.
4.2 Special conditions
4.2.1 Ambient temperature
Installation site ambient temperature significantly exceeded 4.1.1 listed in the normal conditions of use range, the minimum and maximum ambient temperature range of priorities […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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