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- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDYD-1010C is a professional field-oriented cascade power frequency withstand voltage test system designed for insulation strength test of 110kV and below high-voltage electrical equipment in remote substations, power plants, and construction sites. It fully complies with DL/T 848.2-2004 and GB/T 16927.1-2011, adopting an innovative 2-stage cascade structure consisting of two identical 5kVA/50kV oil-immersed test transformers, which can be easily transported separately and assembled on site in 10 minutes, solving the problem of heavy single-unit 100kV transformers being difficult to move.
Equipped with a portable digital control box and high-brightness 4-digit LED meters, it provides real-time display of high-voltage side voltage, current, and test time with clear readings even under strong sunlight. It features smooth manual voltage regulation, 1s-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. The system supports both cascade operation (100kV/10kVA) and single-stage operation (50kV/10kVA), offering flexible configuration for different test requirements. Ideal for on-site commissioning, periodic maintenance, and acceptance tests of 110kV power transformers, GIS, XLPE power cables, insulators, and bushings.
Specifications
|
Parameter |
Specification |
|
Input Power |
Single-phase AC220V±10%, 50Hz |
|
Rated Capacity |
10kVA (cascade) / 10kVA (single-stage) |
|
Rated Output Voltage |
0–100kV AC (cascade) / 0–50kV AC (single-stage) |
|
Rated Output Current |
100mA (cascade) / 200mA (single-stage) |
|
Output Waveform Distortion |
≤3% |
|
Measurement Accuracy |
Voltage ±1.5% F.S；Current ±2.5% F.S |
|
Display |
3 independent 4-digit digital LED meters |
|
Timing Range |
1s–99H adjustable；audible and visual alarm |
|
Protection Functions |
Zero-start, Over-current (10–110% adjustable), Breakdown, Emergency stop, Cascade interlock |
|
Cooling Method |
Oil-immersed self-cooling |
|
Control Box Dimensions (mm) |
450×350×250 |
|
Single Transformer Dimensions (mm) |
Φ280×650 (including grading ring) |
|
Weight |
Control box: ~25kg；Single transformer: ~45kg；Total: ~115kg |
|
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 transformers: 10kV–110kV distribution and power transformers
- GIS & switchgear: 110kV gas-insulated switchgear, vacuum breakers, busbars
- Power cables: 10kV–110kV XLPE insulated power cables
- Insulators & bushings: high-voltage insulators, transformer bushings
- Electrical safety tools: insulating gloves, boots, rods, blankets (single-stage mode)
- Capacitors & motors: medium-voltage insulation test
Typical Usage Scenarios
- Remote substation commissioning: new equipment acceptance tests in hard-to-reach locations
- Preventive maintenance: periodic insulation strength tests
- Construction site testing: on-site test of newly installed equipment
- Factory quality control: production line testing of medium-voltage equipment
- Emergency fault diagnosis: insulation degradation or damage detection
Advantages
Dual-Mode Operation
Cascade (100kV/10kVA) + single-stage (50kV/10kVA) → one system covers all test requirements from 10kV to 110kV
4-Digit High-Brightness Display
Clear readings even under strong sunlight → eliminates reading errors in field environments
Comprehensive Safety Protection
Multiple protection layers + hard-wired emergency stop → maximum safety for operators and expensive test equipment
Oil-Immersed Self-Cooling
Excellent heat dissipation；30 minutes continuous full-load operation → suitable for long-duration field tests
Simple On-Site Assembly
Tool-free connection between transformers → assembled and ready for test in 10 minutes
FAQ
Q: Can it be used as a single 50kV test system?
A: Yes. It supports both cascade (100kV/10kVA) and single-stage (50kV/10kVA) operation, offering flexible configuration for different test requirements.
Q: How long does it take to assemble the cascade system on site?
A: With tool-free quick connectors, the system can be assembled and ready for test in 10 minutes by two people.
Q: What protection functions does it have?
A: Zero-start protection, adjustable over-current protection, breakdown protection, hard-wired emergency stop, and cascade connection interlock.
