EN
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The HVAD-53D is a cost-effective, portable AC/DC dual-purpose dielectric withstand voltage test system designed for insulation strength test and leakage current measurement of 10kV–35kV medium-voltage electrical equipment in power utilities, substations, industrial plants, and electrical equipment manufacturers. It fully complies with DL/T 848.2-2004 and GB/T 16927.1-2011, adopting a split design consisting of a lightweight oil-immersed test transformer and a rugged aluminum alloy control box, delivering stable sine wave output and reliable performance for routine on-site testing.
Equipped with high-precision digital voltmeters and ammeters, it provides real-time display of high-voltage side voltage and low-voltage side current, eliminating the need for external measuring instruments. It features intuitive manual voltage regulation, 0–99H adjustable timing function, and comprehensive safety protection including zero-start, over-current, breakdown, and emergency stop, ensuring maximum safety for operators and test samples. With a compact, portable design and total weight of only 45kg, it is ideal for on-site commissioning, periodic maintenance, and factory quality control of power cables, distribution transformers, switchgear, insulators, and electrical safety tools.
Specifications
|
Parameter |
Specification |
|
Input Power |
Single-phase AC220V±10%, 50Hz |
|
Rated Capacity |
3kVA |
|
AC Output Voltage |
0–50kV RMS (linear adjustable) |
|
AC Output Current |
0–60mA |
|
DC Output Voltage |
0–70kV (negative polarity, linear adjustable) |
|
DC Output Current |
0–35.7mA |
|
Output Waveform Distortion |
≤3% |
|
Voltage Measurement Accuracy |
≤±1.5% F.S |
|
Current Measurement Accuracy |
≤±1.5% F.S |
|
Duty Cycle |
100% rated load for 1 minute, 50% rated load continuous |
|
Timing Range |
0–99H adjustable；audible and visual alarm |
|
Protection Functions |
Zero-start, Over-current (10–110% adjustable), Breakdown, Emergency stop |
|
Cooling Method |
Oil-immersed self-cooling |
|
Control Box Dimensions (mm) |
420×320×200 |
|
Test Transformer Dimensions (mm) |
Φ220×550 (including grading ring) |
|
Weight |
Control box: ~18kg；Test transformer: ~27kg；Total: ~45kg |
|
Operating Temperature |
-20℃ ~ +50℃；Humidity ≤85%RH (non-condensing) |
|
Compliance |
DL/T 848.2-2004, GB/T 16927.1-2011, IEC 60060-1, IEC 61010-1 CAT III 1000V |
Applications
Core Test Objects
- Power cables: 10kV–35kV XLPE/PVC insulated cables (AC/DC withstand & leakage test)
- Distribution transformers: 10kV–35kV winding AC/DC withstand voltage test
- Switchgear & GIS: 10kV–35kV vacuum breakers, load switches, busbars
- Insulators & bushings: high-voltage insulators, transformer bushings
- Electrical safety tools: insulating gloves, boots, rods, blankets (AC withstand test)
- Capacitors & motors: medium-voltage insulation test
Typical Usage Scenarios
- Substation commissioning: new equipment acceptance tests
- Preventive maintenance: periodic insulation strength tests
- Factory quality control: production line testing of electrical equipment
- On-site field testing: portable design for remote substation use
- Safety tool inspection: regular testing of electrical safety equipment
Advantages
AC/DC Dual-Purpose Design
One unit for both AC and DC withstand voltage tests → reduces equipment investment, improves testing efficiency
3kVA Sufficient Capacity
Stable output for 10kV–35kV medium-voltage equipment → no voltage drop during test
Oil-Immersed Self-Cooling Design
Excellent heat dissipation；continuous operation at 50% load → suitable for long-duration tests
Comprehensive Safety Protection
Multiple protection layers + emergency stop → maximum safety for operators and equipment
Ultra-Portable Split Design
45kg total weight；easy to transport and assemble → ideal for on-site field testing
Cost-Effective & Reliable
Simple structure, low maintenance cost；proven performance in thousands of field applications
FAQ
Q: Can it output both AC and DC high voltages?
A: Yes. It supports 0–50kV AC and 0–70kV DC dual output, suitable for both AC and DC withstand voltage tests.
Q: What is the duty cycle of the device?
A: It can operate continuously at 50% rated load, and 1 minute at 100% rated load, which meets the requirements of most routine tests.
Q: Does it require external voltage measuring instruments?
A: No. It has built-in high-precision digital voltmeters and ammeters, providing real-time display of voltage and current directly.
