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| After-sales Service: | Yes |
| Warranty: | 1 Year |
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Feature of KDJF2020B No Partial Discharge Withstand Voltage Test System:
| YDQ Gas Type Transformer | |||
| Voltage accuracy | <AC 1.0% | Frequency | 50Hz |
| Measurement winding split ratio | 100:1 | No-load current: | 5% |
| Waveform distortion rate | ≤5% | Partial discharge | 100% UN is not more than 5PC |
| System noise level | ≤65dB | Partial discharge at rated voltage | ≤3pC |
| Connection group | II0 | Cooling method | ONAN |
| Use conditions | Indoor | Output current | 100mA |
| Insulation medium | SF6 | Power distortion | <3% |
| System partial discharge at rated voltage | ≤5PC | Dimensions | about 480*480*750mm |
| Weight | about 55kg | Structure | epoxy barrel SF6 gas |
| Overcurrent capability | Under the condition of 150% (0.75) rated current for 300S, the overcurrent test transformer windings will not cause thermal damage and winding deformation | ||
| Overvoltage capability | Overvoltage at 110℅UH (55kV) for 60S should not cause insulation damage to the test transformer, and the waveform distortion rate is ≤5% at this time | ||
| Insulation level | Low-voltage end power frequency withstand 15kV/min | Dielectric loss | ≤0.5% |
| Partial discharge | less than 5PC at 100%UH; less than 3PC at 80%UH | ||
| Running time | 60min of operation is allowed from ambient temperature at 100%HU, IH, and continuous operation is allowed from ambient temperature at 80%UH, IH | ||
| Temperature rise test | Under normal use conditions, the winding temperature rise is less than 65K, and the oil surface temperature is less than 55K | ||
| Protection | Overcurrent relays are used for overcurrent protection on both the primary and secondary sides to ensure the safety of personnel and equipment under any circumstances | ||
| Sealing material | A special "double-layer sealing method" is used under the seal structure design to ensure that the service life of the test transformer is not less than 15 years | ||
| No Partial Discharge Protection Resistor | |||
| System partial discharge at rated voltage | ≤5pC | Rated frequency | 50Hz |
| Rated current | long-term current 0.3A | Surface creepage | 150kV.d |
| Heat resistance grade | F | Weight | about 3Kg |
| Partial discharge | <3pC at 100% rated voltage, <2pC at 80% rated voltage | ||
| Temperature rise | Continuous operation resistor surface temperature is less than 80K at 100% rated current | ||
| Operation time | 60min from ambient temperature at 100%HU, IH, continuous operation from ambient temperature at 80%UH, IH | ||
| No Partial Discharge Coupling Capacitors | |||
| Rated frequency | 50Hz | Nominal voltage divider ratio | 1000:1 |
| Accuracy | 0.5 | Dielectric loss | <0.2% |
| Partial discharge | <3pC at rated voltage, <2pC at 80% rated voltage | ||
| Measurement accuracy | ≤±1% | Weight | about 20Kg |
| Operation time | 60 minutes from ambient temperature at 100%HU, IH, continuous operation at 80%UH, IH | ||
| Isolation Filter | |||
| Input voltage | 0.45kV | Output voltage | 0.45kV |
| Rated current | 40A | Rated frequency | 50-60Hz |
| Number of lines | 1 | Quality factor of filter reactor | >70 |
| Partial discharge background level | ≤5pC | Damping resistor power | 100W |
| Attenuation characteristics | 40kHz-100kHz>40dB; 100kHz-1MHz>50dB |
Insulation level | 5kV/1min abnormal discharge phenomenon |
| Operation time | 60min from ambient temperature at 100%HU, IH, continuous operation from ambient temperature at 80%UH, IH, the temperature rise of the winding meets the national standards | ||
| Dimensions | about 350*340*400 (mm) | Weight | about 25Kg |
Detection sensitivity and allowable current:
| Input unit No. |
Tuning capacitor | Unit | Sensitivity (pC) (Asymmetric circuit) |
| 1 | 6-25-100 | pF | 0.02 |
| 2 | 25-100-400 | pF | 0.04 |
| 3 | 100-400-1500 | pF | 0.06 |
| 4 | 400-1500-6000 | pF | 0.1 |
| 5 | 1500-6000-25000 | pF | 0.2 |
| 6 | 0.006-0.025-0.1 | μF | 0.3 |
| 7 | 0.025-0.1-0.4 | μF | 0.5 |
| 8 | 0.1-0.4-1.5 | μF | 1 |
| 9 | 0.4-1.5-6.0 | μF | 1.5 |
| 10 | 1.5-6.0-25 | μF | 2.5 |
| 11 | 6.0-25-60 | μF | 5 |
| 12 | 25-60-250 | μF | 10 |
| 13 | Resistor | 0.5 |
| Power Frequency Withstand Voltage Boost Device Console | |||
| Input voltage | 380V±10% | Output current | 75A |
| Output voltage | 0~0.43kV | Dimensions & Weight | about 480*460*730 (mm), 30Kg |
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