Welcome to National Center of Quality Supervision and Testing on Electricity Meters !
Calibration
Traditional electrical parameters and power quality parameters


  

 

Measuring instrument

Calibration items

Measuring range

Calibration uncertainty

Power quality testing and analysis device, etc.

Voltage deviation

(1~1008)V

Urel=0.03%,k=2

Frequency deviation

(45~65)Hz

Urel=0.006%,k=2

Harmonic voltage

Harmonic number: (2~100), Harmonic content : (0~1) %

U=0.014%,k=2

Harmonic number:(2~100),Harmonic content :(1~20) %

Urel=0.07%,k=2

Harmoniccurrent

Harmonic number:(2~100),Harmonic content :(0~3) %

U=0.02%,k=2

Harmonic number:(2~100),Harmonic content :(3~20) %

Urel=0.08%,k=2

Harmonic active power

(0~150)W

U=0.05%,k=2

Three-phase unbalance

(0~5) %

U=0.03%,k=2

Inter-harmonics voltage

(16~5000)Hz,(0~1) %

U=0.03%,k=2

(16~5000)Hz,(1~20) %

Urel=1.2%,k=2

Inter-harmonics current

(16~5000)Hz,(0~3) %

U=0.02%,k=2

(16~5000)Hz,(3~20) %

Urel=1.2%,k=2

Flicker

±30%

Urel=0.3%,k=2