The instrument “КОЭФФИЦИЕНТ-1.3” allows measuring the following parameters for the transformers of all the circuits and groups of connections according to GOST 30830 consequently at every phase:
- Transformation rate;
- No-load operation loss at the low voltage;
- Short circuit impedance.
- Effective (root-mean-square) voltage.
“Коэффициент-1.3” is the new version of the “Коэффициент” instrument distinguishing with the advanced functional capabilities, better metrological characteristics and operating speed.
It is manufactured in two hardware versions:
- Standard (operating temperature range: from 5 °C to 40 °C);
- North (operating temperature range: from minus 15 °C to 55 °C).
It has:
- Permanent memory for 700 measurement results;
- Galvanic isolated interface RS232 for the connection to the computer;
- Programmed number of measurement with the indication of the averaged value;
- Manual or automatic measurement ranging.
The instrument is registered in the State Register of the Measuring Instruments of RF. The measuring instruments type approval certificate RU.C.34.033.A. No. 55541.
Technical Characteristics | ||
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Measured quantity | Measurement range | Measurement error, % ± |
Effective (root-mean-square) alternating voltage value UBH, V |
50-500 |
0.25 (nominal) |
Effective (root-mean-square) first harmonic value UHH, V |
0,5-5 |
|
5-50 |
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50-500 |
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Transformation rate |
0,44-440 |
0.5 (nominal) |
Effective (root-mean-square) current value I, A |
0,002-0,02 |
0.25 (nominal) |
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0,2-2 |
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|
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20-200 (clamp meter) |
1.0 (nominal) |
|
Phase displacement angle between the voltage and current, Δφ, ° |
from -180 ° |
0.25 ° (absolute) |
Real electric power P, W (λ=1.0) |
0,44-4400 |
0.25 (nominal) |
Real electric power P, W |
1.0 (nominal) | |
Real electric power P, W |
2.0 (nominal) | |
Power factor λ |
from -1.0 to +1.0 | 0.05 (absolute) |
Alternating current frequency f, Hz |
from 45 to 65 | 0.05 (absolute) |
Electrical impedance Z, O |
0.11-1.1 1.1-11 11-110,000 |
1.5 (nominal) 1.5 (nominal) 0.5 (nominal) |
Xнand Xк – initial and final points of the measurement range correspondingly |
The instrument delivery package includes the current transducer 100 A
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Each specific instrument is calibrated with the specific current transducer 100 A (clamp meter). |
The following parts can be additionally supplied with the instrument:
the set of 4 measurement cables
Measurement cables set | Length, m | PVC tube | Silicone tube | Hardware version |
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2 |
+ |
1 |
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+ |
2 |
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5 |
+ |
3 |
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+ |
4 |
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10 |
+ |
5 |
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+ |
6 |
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15 |
+ |
7 |
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+ |
8 |
The current transducer 1000 A (Rogowski coil) | |
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Each specific instrument is calibrated with the specific current transducer 1,000 A (Rogowski coil). |