SIM Comparison of AC Current Ratio Using Instrument Current Transformers

2020 ◽  
Author(s):  
D. Slomovitz ◽  
A. Santos ◽  
R. Sandler ◽  
G. Barreto ◽  
G. Aristoy ◽  
...  
Keyword(s):  
Current Transformers ◽  
Current Ratio ◽  
Ac Current

Research of Weak AC Current Accuracy Measurement Based on ADE7816

2013 ◽  
Vol 427-429 ◽  
pp. 1032-1035
Author(s):  
Shuo Hu ◽  
Qi Hua Yang ◽  
Gang Hai Liu
Keyword(s):  
Relative Error ◽  
Mutual Inductance ◽  
Average Relative Error ◽  
Current Signal ◽  
Current Transformers ◽  
Accuracy Measurement ◽  
Energy Metering ◽  
Ac Current ◽  
First Time ◽  
Current Accuracy

Converted current signal by mutual inductance coil is merely microampere level when using current transformers measure milliamps-power currents, the weak signal is too easily be interference by external environment to achieve accurate measurements. For the power current below 6mA, designed a system based on energy metering chip ADE7816. By analyzing the experimental results, proposed schemes to reduce the measurement error for the first time. The results show that, when the load is maintained at 10Ω and the value of PGA is set to 4 from 0, the average relative error of results is reduced to 0.63%; additionally, when the value of PGA is maintained at 0, but the load Increased to 52Ω from10Ω, the average relative error of results is 0.02%.

Comparison of AC current ratio standards in the range up to 4 kA

CPEM 2010 ◽  
2010 ◽  
Author(s):  
R. Styblikova ◽  
K. Draxler ◽  
Emil Dimitrov ◽  
Ginka Kumanova ◽  
Erik Dierikx
Keyword(s):  
Current Ratio ◽  
Ac Current ◽  
Ratio Standards

scholarly journals Contribution to experimental investigation of fitting the current transformers' calibration curves

2020 ◽  
Vol 24 (3-4) ◽  
pp. 123-128
Author(s):  
Attila Juhász ◽  
Vladimir Vujičić
Keyword(s):  
Current Transformers ◽  
Current Ratio ◽  
Accuracy Class ◽  
Ratio Error ◽  
Calibration Curves ◽  
Fitting Algorithm ◽  
Time Correction ◽  
Ieee Standard ◽  
Primary Current ◽  
Novel Algorithm

The paper experimentally investigates the problem of fitting calibration curves of current transformers (CTs). An efficient fitting algorithm enables precise and accurate electronic real-time correction of CT errors and thus effective improvement of their accuracy class. The paper presents the results of a novel algorithm that allows correcting the transformers' current ratio error from 0.25% to within 0.004%, based on 8 key calibration points in the range 1% to 200% of the CT's nominal primary current, in line with the new IEEE Standard.

Alternate Current Transformers

1896 ◽  
Vol 42 (1084supp) ◽  
pp. 17330-17331
Author(s):  
J. A. Fleming
Keyword(s):  
Alternate Current ◽  
Current Transformers

Current transformers

1945 ◽  
Vol 15 (60) ◽  
pp. 46
Author(s):  
A.R. Rumfitt
Keyword(s):  
Current Transformers
Sign in / Sign up

Export Citation Format

Share Document