4761 / 4762a / 4764 reference current comparators up to 10 000 A
Electronically compensated reference current transformers for primary current up to 10 000 A. They are used to calibrate CTs, to measure losses of shunt reactors and the capacitance of power capacitors.
- 4761
- 1–1000 A primary taps, up to 2000 A
- 4762a
- 10 mA – 400 A, bridge range extension
- 4764
- 1–5000 A, up to 10000 A
- Error
- < 10–20 ppm, phase < 0.1–0.15 arcmin
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Model 4761 has primary taps of 1–1000 A and operates up to 2000 A. Model 4762a covers 10 mA – 400 A and extends the range of measuring bridges. Model 4764 has taps of 1–5000 A and is rated up to 10000 A. Ratio error < 10–20 ppm, phase error < 0.1–0.15 arcmin, secondary current 5 or 1 A.
Technical specifications
| 4761 | 1–1000 A primary taps, up to 2000 A |
|---|---|
| 4762a | 10 mA – 400 A, bridge range extension |
| 4764 | 1–5000 A, up to 10000 A |
| Error | < 10–20 ppm, phase < 0.1–0.15 arcmin |
| Secondary current | 5 / 1 A |
Request a price and lead time
4761 / 4762a / 4764 reference current comparators up to 10 000 A. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 9030 33 70 00 |
|---|---|
| HS, 6 digits | 9030 33 |
| CN (EU) | 9030 33 70 |
| HTSUS (USA) | 9030 33 38 00 |
| China customs tariff | 9030 33 90 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which comparator is needed for currents above 2000 A?
Model 4764 with taps of 1–5000 A, rated up to 10000 A.
What is the accuracy of the reference comparators?
Ratio error < 10–20 ppm, phase error < 0.1–0.15 arcmin.
What is model 4762a used for?
To extend the range of measuring bridges within 10 mA – 400 A.
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