
I. Current Transformer (CT) | II. Voltage Transformer (PT) |
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1. Magnetization curve | 1. Excitation characteristic test |
2. Transformation ratio test | 2. Transformation ratio test |
3. Polarity | 3. Polarity |
4. 5% and 10% error curve | 4. Ratio error, phases |
5. Current Injecting | 5. Degauss |
6. Degauss | 6. Calculation of knee point value |
7. Ratio error, phases | 7. Actual secondary load (burden), test (burden) |
8. Automatic calculation of excitation knee point value | 8. Resistance test |
9. Actual secondary load test (burden) (load test) | |
10. Resistance test | |
11. Secondary winding time constant (Ts) | |
12. Remanence coefficient (Kr) | |
13. Transient dimensioning factor (Ktd) | |
14. Peak instantaneous error (Er) | |
15. Magnetizing inductance (LU) |
Electrical parameters | ||
---|---|---|
Accuracy | 0.05%, 0.1% | |
Power supply | AC 220V±10% or AC 110V±10%, 50/60Hz | |
Excitation output voltage | 0-220Vrms | |
Excitation output current | 0-5Arms (20A peak-value) | |
Automatic frequency variation range | 0.1-60Hz | |
Equivalent excitation voltage | ≤5000V | |
Accuracy | ≤0.5% (0.2%RD+0.3%RG) | |
Secondary winding DC resistance measurement | Range | 0.1-300Ω |
Accuracy | ≤0.5% (0.2%RD+0.3%RG) | |
Secondary actual load measurement | Range | 5VA-1000VA |
Accuracy | ≤0.5% (0.2%RD+0.3%RG)±0.1VA | |
CT/PT phase error measurement | Accuracy | ±4min |
Resolution | 0.01min | |
CT ratio error measurement | Range | 1-30000 |
Accuracy | ≤0.5% | |
PT ratio error measurement | Range | 1-10000 |
Accuracy | ≤0.5% | |
Standards | ||
Reference standards | GB1207-2006, GB1208-2006, GB16847-1997 IEC60044-1, IEC60044-6, IEC61869-2-2012 | |
Safety standards | GB 4793.1-2007 | |
EMC | EMC standard 89/336/EEC | |
FCC Subpart B of Part 15 Class A | ||
IEC 1000-4-2/3/4/6 | ||
Mechanical parameters | ||
Overall dimension (L x W x H) (mm) | 410 x 250 x 300 | |
Weight (kg) | ≤10 | |
Environmental conditions | ||
Relative humidity | 90RH% | |
Operating temperature | -10°C to +40°C | |
Altitude | ≤2000m |
The test items mainly include | |
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Steady | Transient |
excitation characteristic | secondary winding time constant (Ts) |
transformation ratio | remanence coefficient (Kr) |
polarity | transient dimensioning factor (Ktd) |
ratio error | peak instantaneous error (Er) |
phases | magnetizing inductance (LU) |
5% and 10% error curves | other parameters |
resistance | |
secondary load |
Beijing GFUVE Instrument Transformer Manufacturer Co.,Ltd.
Beijing GFUVE Instrument Transformer Manufacturer Co., Ltd. was established in 2008. It combined design, manufacturing and sales together as one high-tech enterprise. GFUVE Instrument Transformer company mainly produces less than 35kV current transformer and voltage transformer, split core ct and current clamp models etc.
GFUVE is a leader manufacturer of split core current transformer products in China. It is professional in current transformer, potential transformer and related accessory. The product of outdoor split core current transformer develops very quickly in the global market. Our company has achieved certification to ISO9001. The products are sold to over 30 provinces in China and exported to overseas including South America, Middle East, Southeast Asia, Australia and Africa.
Please contact us now for further business relationship. We are here to provide you the best service and the best product.