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- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDYD-300kVA/100kV is a high-power, heavy-duty power frequency withstand voltage test system designed for AC insulation strength test of 110kV and below high-voltage electrical equipment in power utilities, substations, power 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 an intelligent control box with built-in voltage regulator and an oil-immersed test transformer, delivering stable sine wave output and reliable performance for long-duration tests.
Equipped with a large LCD display and intuitive operation interface, it supports both manual voltage regulation and one-key automatic test (auto boost → hold time → auto step-down → auto shutdown). It features comprehensive safety protection including zero-start, over-voltage, over-current, breakdown, and emergency stop, ensuring maximum safety for operators and test samples. With oil-immersed self-cooling and heavy-duty industrial design, it can operate continuously for 30 minutes at full load. Ideal for commissioning, periodic maintenance, and type tests of 110kV power transformers, GIS, switchgear, XLPE power cables, insulators, and bushings.
Specifications
|
Parameter |
Specification |
|
Rated Capacity |
300kVA |
|
Rated Output Voltage |
0–100kV AC (RMS, linear adjustable) |
|
Rated Output Current |
0–3A AC |
|
Input Power |
3-phase 380V±10%, 50Hz |
|
Output Waveform Distortion |
≤3% |
|
Voltage Measurement Accuracy |
±1.5% (F.S) |
|
Current Measurement Accuracy |
±1.5% (F.S) |
|
Continuous Operation Time |
30 minutes at full load |
|
Cooling Method |
Oil-immersed self-cooling |
|
Operation Modes |
Manual (knob regulation) + Automatic (one-key test) |
|
Timing Range |
0–9999s adjustable；audible alarm |
|
Protection Functions |
Zero-start, Over-voltage, Over-current, Breakdown, Emergency stop |
|
Standard Accessories |
Protective sphere gap, HV test leads, ground cable, discharge rod |
|
Test Transformer Dimensions (mm) |
Φ800×1600 (including grading ring) |
|
Control Box Dimensions (mm) |
800×600×1200 |
|
Weight |
Test transformer: ~650kg；Control box: ~180kg |
|
Operating Temperature |
-10℃ ~ +40℃；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 transformers: 10kV–110kV power transformers (power frequency withstand voltage test)
- GIS & switchgear: 110kV gas-insulated switchgear, vacuum breakers, busbars
- Power cables: 10kV–110kV XLPE insulated power cables
- Insulators & bushings: high-voltage insulators, transformer bushings
- Lightning arresters: power frequency withstand voltage test
- Generators & motors: medium-voltage rotating machines
Typical Usage Scenarios
- Substation commissioning: new equipment acceptance tests
- Preventive maintenance: periodic insulation strength tests
- Type tests: electrical equipment manufacturer production line tests
- Fault diagnosis: insulation degradation or damage detection
- On-site field testing: split design for remote substation use
Advantages
300kVA High Power Output
Sufficient capacity for 110kV long cables and large transformers → stable output, no voltage drop during test
Oil-Immersed Self-Cooling Design
Excellent heat dissipation；30 minutes continuous full-load operation → suitable for long-duration type tests
Manual/Automatic Dual Mode
Flexible operation；one-key automatic test reduces human error → improves testing efficiency
Comprehensive Safety Protection
Multiple protection layers + emergency stop → maximum safety for operators and equipment
Split Design & Heavy-Duty Build
Easy to transport and assemble；industrial-grade construction → reliable performance in harsh environments
FAQ
Q: Can it test 110kV long XLPE cables?
A: Yes. 300kVA high capacity provides sufficient current to drive large capacitive loads like 110kV long cables.
Q: Does it support automatic test procedures?
A: Yes. Set test voltage and hold time, and the system will automatically boost, hold, step down, and shut down.
Q: What protection functions does it have?
A: Zero-start, over-voltage, over-current, breakdown protection, and hard-wired emergency stop.
Q: Is the test transformer oil-immersed or dry-type?
A: It is an oil-immersed test transformer with excellent heat dissipation and insulation performance.
