Products Description
GOLDHOME HM-YDQW-20/150 Partial Discharge-Free Test Transformer System, with a rated capacity of 20 kVA and a high voltage of 150 kV, features a partial discharge level of less than 5 pC at 100% UH. It is suitable for power-frequency withstand voltage testing of insulation materials and electrical products.
product features
- Power-Frequency Partial Discharge-Free Test Transformer (HM-YDQW-20/150)
- Structure Type: Vertical, Metal Enclosure
- Number of Phases: Single-phase
- Frequency: 50 Hz
- Rated Capacity: 20 kVA
- Input Voltage: 0.4 kV
- Input Current: 50 A
- High-Voltage Winding: 150 kV
- High-Voltage Current: 0.13 A
- Waveform Distortion Rate: ≤3%
- Measuring Winding Voltage Ratio: 1500:1
- Overcurrent Capacity: Under operating conditions of 150% In (rated current) for 300 seconds, the overcurrent shall not cause thermal damage or deformation to the test transformer windings.
- Overvoltage Capacity: Under an overvoltage condition of 110% UH (165 kV) for 60 s, no insulation damage to the test transformer shall occur, and the waveform distortion rate shall be ≤5% during this period.
- Insulation Level: Power-frequency withstand voltage level of 5 kV/1 min between the low-voltage input terminals and ground
- Dielectric Loss: <0.3%
- Noise: ≤60 dB
- Electrical Strength of Insulating Medium: Breakdown voltage greater than 5 kV/2.5 mm; trace moisture content less than 10 ppm; dielectric loss factor less than 0.3% (at 90°C)
- Partial Discharge Level: Less than 5 pC at 100% UH; less than 3 pC at 80% UH
- Voltage Non-uniformity: ≤±5%
- Operating Time: Permitted to operate for 10 minutes starting from ambient temperature at 100% UH and IH; permitted for continuous operation starting from ambient temperature at 80% UH and IH, with transformer winding temperature rise ≤ 65 K.
fAQ
Q: What is the partial discharge level of this system?
A: At 100% of the rated voltage (150 kV), the system's partial discharge level is less than 5 pC; at 80% of the rated voltage, it is less than 3 pC.
Q: Is the system gas-insulated or oil-immersed?
A: It features a gas-insulated (SF6 gas insulation) design, offering advantages such as compact size, light weight, no oil contamination, and maintenance-free operation.
Q: Does the system support automatic operation?
A: Yes. It is equipped with an intelligent control system that features automatic voltage ramp-up and ramp-down test functions. The voltage ramp-up rate is configurable, and the system automatically starts timing once the set voltage is reached.
Products Details
Hot Tags: 150kv sf6 pd free hv test transformer, China 150kv sf6 pd free hv test transformer manufacturers, factory
