National Metrological Verification Regulations of the People's Republic of China
Latest
JJG 313-2010
Scope
This regulation is applicable to the initial verification, subsequent verification and in-use inspection of current transformers for measurement (hereinafter referred to as current transformers) of level 0.001 to level 0.5 with a rated frequency of 50 Hz (or 60 Hz).
JJG 313-2010 history
2010JJG 313-2010 Verification Regulation of Instrument Current Transformers
1994JJG 313-1994 Verification Regulation of Current Transformers of Measuring Service