HZJW-15kVA/150kV PD-free AC Withstand Voltage Test System
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HZJW-15kVA/150kV PD-free AC Withstand Voltage Test System
PD-free AC Withstand Voltage Test System is a testing equipment used to test the insulation performance of various insulation materials, insulation structures, electrical products, and equipment such as power transformers, transformers, lightning arresters, etc
Technical Parameters
| Parameter | Specification |
|---|---|
| Partial discharge (Insulating cylinder type) | For rated voltages (UH) ranging from 10 to 150kV, the partial discharge at 100% UH is ≤3–10Pc |
| Allowed operating time | 1. Under rated voltage and current: Can operate for 30 minutes starting from ambient temperature.2. At two-thirds of the rated voltage and current: Can operate continuously. |
| Impedance of a single test transformer | 3%–12% |
| Waveform distortion rate | <3% |
| Other parameters | Comply with the JB/T9641-1999 "Test Transformers" standard |
Usage Instructions
Power Source Selection: Select a power source with appropriate capacity and voltage.
Equipment Placement and Wiring: Position each device properly before wiring, ensuring adequate insulation distance from surrounding objects. Choose suitable wires and correctly connect each one.
Grounding: Connect the grounding wires for each device, paying special attention to ensuring that the grounding point is a single-point ground.
Startup Preparation: Prepare for startup and follow the manual or automatic operation procedures (refer to the console user manual).
Test Area Security: Close the test area door.
Conduct the Test: Perform the test according to the manual or automatic power frequency control console steps.
Post-Test Shutdown: After the test, cut off the power supply, attach a grounding rod to the high-voltage output terminal, then disconnect the test specimen.
Data Recording and Reporting: Carefully record the test data, compile it into a report, analyze the report, and draw clear conclusions.
Precautions
The main circuit power capacity should meet the maximum output power requirement.
When increasing the voltage, observe if all meters are functioning normally. Overloading is strictly prohibited.
All grounding should be a single point ground.
The equipment must not be tilted, and it must not be used when oil is deficient.
The insulating shell and high-voltage bushings of the iron shell must not be collided with or scratched.
The entire equipment must not be stored or used indoors at temperatures below -5°C.
When changing the equipment's environment, the relative temperature difference should not exceed 15K.
The surface of bushings and shells must not be covered with water, ice, or snow. Indoor equipment must not be stored or used outdoors.
After the test, the key to the equipment console should be removed and kept safely.
This set of equipment should be operated and maintained by designated personnel.
Before using this set of equipment, the user must carefully read the instruction manual, especially the provisions specified in items 6 and 7, which must be strictly adhered to.
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