EN
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The HVAD-D 10kVA is a high-capacity, mobile power frequency withstand voltage test system designed for insulation strength test 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 DL/T 474.4-2006, adopting a split design consisting of a caster-mounted digital control box and a lightweight oil-immersed test transformer, delivering stable sine wave output and reliable performance for heavy-duty on-site testing.
Equipped with high-precision 4-digit digital voltmeters and ammeters, it provides real-time display of high-voltage side voltage and current with clear readings even under strong sunlight. It features smooth 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 heavy-duty casters and ergonomic handle, it can be easily moved around substations and factory floors, making it 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 (3-phase 380V optional) |
|
Rated Capacity |
10kVA |
|
Standard AC Output Voltage |
0–50kV RMS (linear adjustable) |
|
Standard AC Output Current |
0–200mA |
|
Optional AC Output |
0–100kV AC/100mA |
|
Optional DC Output |
0–70kV DC/100mA (with rectifier unit) |
|
Output Waveform Distortion |
≤3% |
|
Voltage Measurement Accuracy |
≤±1.5% F.S |
|
Current Measurement Accuracy |
≤±1.5% F.S |
|
Duty Cycle |
100% rated load for 30 minutes, 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) |
550×450×1000 (with casters) |
|
Test Transformer Dimensions (mm) |
Φ320×750 (including grading ring) |
|
Weight |
Control box: ~45kg；Test transformer: ~65kg；Total: ~110kg |
|
Operating Temperature |
-20℃ ~ +50℃；Humidity ≤85%RH (non-condensing) |
|
Compliance |
DL/T 848.2-2004, DL/T 474.4-2006, 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 withstand test)
- Distribution transformers: 10kV–35kV winding power frequency 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: mobile design for remote substation use
- Safety tool inspection: regular testing of electrical safety equipment
Advantages
0kVA High Capacity Output
Sufficient current for 35kV long cables and large transformers → stable output, no voltage drop during test
Digital Mobile Control Box
4-digit digital display + heavy-duty casters → clear readings, easy to move around substations and factories
Oil-Immersed Self-Cooling Design
Excellent heat dissipation；30 minutes continuous full-load operation → suitable for long-duration type tests
Comprehensive Safety Protection
Multiple protection layers + emergency stop → maximum safety for operators and equipment
Optional AC/DC Dual Output
One unit for both AC and DC withstand voltage tests → reduces equipment investment, improves testing efficiency
FAQ
Q: What is the difference between HVAD-D 10kVA and HVAD-53D?
A: HVAD-D 10kVA has higher capacity (10kVA vs 3kVA) and higher output current (200mA vs 60mA), making it suitable for 35kV long cables and large transformers；HVAD-53D is more portable for general 10kV equipment testing.
Q: Can it be upgraded to AC/DC dual output?
A: Yes. An optional rectifier unit can be added to provide 0–70kV DC output for DC withstand voltage tests.
Q: Is the control box mobile?
A: Yes. It is equipped with 4 heavy-duty polyurethane casters and an ergonomic handle, making it easy to move around substations and factory floors.
