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(tick) CE Transducer CE42 AC meter works without any Current Transformer Ring however, the cable entry can
be too narrow for some cable's diameter.

(tick) CE Transducer CE42CT AC meter works best with the CE-CTH Split Core rings. Specifically with the rings
that has the a conversion ratio to of 1A

(tick) Carlo Gavazzi EM210 AC meter works best with the Rogowski CT rings.

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Item Codes/Data

Meter
Accuracy

Ring
Accuracy

Accuracy
Calculation

Calculation
Examples

Galooli Item Code

Voltage reading accuracy

Current reading accuracy

CT Accuracy

Overall voltage accuracy

Overall current accuracy*

Overall kwh
accuracy*

Input voltage

Voltage-

Voltage+

Input current

Current-

Current+

Kwh

Kwh-

Kwh+

400-ACMetCE42CT-502 (Meter)

0.50%

0.50%

400-AcRin24H30A1A-502 (Ring)

0.50%

0.50%

0.50%

0.50%

1.00%

1.50%

230

227.5

232.5

150

-148.5

+151.5

200

-197

+203

400-AcRin24H50A1A-502 (Ring)

0.50%

0.50%

0.50%

0.50%

1.00%

1.50%

230

227.5

232.5

50

-49.5

+50.5

200

-197

+203

400-AcRin24H150A1A-502 (Ring)

0.50%

0.50%

1.00%

0.50%

1.50%

2.00%

230

227.5

232.5

30

-29.55

+30.45

200

-196

+204

400-AcRin36H30A1A-502 (Ring)

0.50%

0.50%

0.50%

0.50%

1.00%

1.50%

230

227.5

232.5

150

-148.5

+151.5

200

-197

+203

400-AcRin36H50A1A-502 (Ring)

0.50%

0.50%

0.50%

0.50%

1.00%

1.50%

230

227.5

232.5

50

-49.5

+50.5

200

-197

+203

400-AcRin36H150A1A-502 (Ring)

0.50%

0.50%

1.00%

0.50%

1.50%

2.00%

230

227.5

232.5

30

-29.55

+30.45

200

-196

+204

400-ACMetAJ42B-502
(RingMeter)

0.50%

0.50%

1.00%

230

225

235

200

-199

+201

200

-198

+202

400-AcRin150A5A-502
(Ring)

0.50%

0.50%

1.00%

0.50%

1.50%

2.00%

230

228.8

231.2

150

-147.75

+152.25

200

-196

+204

400-AcRin50A5A-502
(Ring)

0.50%

0.50%

3.00%

0.50%

3.50%

4.00%

230

228.8

231.2

50

-44.75

+55.25

200

-192

+208

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What is the best way to install the AC meters and Current Transformer Rings on site?

The installation process of the AC Meter and Current Transformer Ring needs to be accurate and in the right order for the current measurement will be correct.

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