JB/T 7779-2008
Specification for AgWC(12)C(3)electric contacts (English Version)
- Standard No.
- JB/T 7779-2008
- Language
- Chinese, Available in English version
- Release Date
- 2008
- Published By
- Professional Standard - Machinery
- Latest
- JB/T 7779-2008
- Replace
- JB/T 7779-1995
- Scope
- This standard specifies the technical requirements, testing methods, inspection rules, marking, packaging and storage of silver tungsten carbide (12) graphite (3) electrical contact products. This standard applies to silver tungsten carbide (12) graphite (3) electrical contact products produced by powder metallurgy technology for low-voltage switchgear.
JB/T 7779-2008 Referenced Document
- GB/T 223.69-1997 Methods for chemical analysis of iron, steel and alloy. The gas-volumetric method after combustion in the pipe furnace for the determination of carbon content
- GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
- GB/T 5586-1998 Test methods for essential porperty of electric contact material
- GB/T 5587-2003 Basic shapes,dimensions,symbols and notations of silver based electrical contacts
- JB/T 7778.3-2008 Test methods for chemical analysis of silver-tungsten carbide electric contact material.Part 3:Determination of overall carbon content
- JB/T 8985-1999 Metallographic examination of the electric contact materials
JB/T 7779-2008 history
- 2008 JB/T 7779-2008 Specification for AgWC(12)C(3)electric contacts
- 1995 JB/T 7779-1995 Technical conditions of silver tungsten carbide (12) graphite (3) electrical contacts
