LYDQ SF6 Gas-Type AC/DC Hipot Test Set
High-voltage insulation testing with SF6 gas technology – 60% lighter than oil-immersed alternatives
Product Parameter
technical parameters
| voltage classes | 10kV～300kV |
| range of capacity | 1～500kVA |
| no-load current | ＜7% |
| impedance voltage | ＜8% |
| product classification | interflow、ac/dc、Ac cascade、Ac-dc cascade |
Main product specifications
| specifications and models | capacity(kVA) | High Voltage(kV) | High tension current(mA) | low input voltage converter | bend-beam-rheometer | temperature rise℃(30 minutes) | |
| voltage(V) | electricity(A) | ||||||
| LYDQ-1.5/50 | 1.5 | 50 | 30 | 200 | 7.5 | 500 | 10 |
| LYDQ-3/50 | 3 | 50 | 60 | 200 | 15 | 500 | 10 |
| LYDQ-5/50 | 5 | 50 | 100 | 200 | 25 | 500 | 10 |
| LYDQ-10/50 | 10 | 50 | 200 | 200 | 50 | 500 | 10 |
| LYDQ-20/50 | 20 | 50 | 400 | 400 | 53 | 500 | 10 |
| LYDQ-30/50 | 30 | 50 | 600 | 400 | 79 | 500 | 10 |
| LYDQ-50/50 | 50 | 50 | 1000 | 400 | 12 | 500 | 10 |
| LYDQ-5/100 | 5 | 100 | 50 | 200 | 25 | 1000 | 10 |
| LYDQ-10/100 | 10 | 100 | 100 | 200 | 50 | 1000 | 10 |
| LYDQ-20/100 | 20 | 100 | 200 | 400 | 53 | 1000 | 10 |
| LYDQ-30/100 | 30 | 100 | 300 | 400 | 79 | 1000 | 10 |
| LYDQ-50/100 | 50 | 100 | 500 | 400 | 132 | 1000 | 10 |
| LYDQ-20/150 | 20 | 150 | 133 | 400 | 53 | 1500 | 10 |
| LYDQ-30/150 | 30 | 150 | 200 | 400 | 80 | 1500 | 10 |
| LYDQ-50/150 | 50 | 150 | 333 | 400 | 132 | 1500 | 10 |
| LYDQ-100/150 | 100 | 150 | 667 | 400 | 263 | 1500 | 10 |
| LYDQ-50/200 | 50 | 200 | 250 | 400 | 132 | 2000 | 10 |
| LYDQ-100/200 | 100 | 200 | 500 | 400 | 263 | 2000 | 10 |
| LYDQ-150/200 | 150 | 200 | 750 | 400 | 395 | 2000 | 10 |
| LYDQ-200/200 | 200 | 200 | 1000 | 400 | 526 | 2000 | 10 |
| LYDQ-300/200 | 300 | 200 | 1500 | 400 | 790 | 2000 | 10 |
| LYDQ-50/300 | 50 | 300 | 170 | 400 | 132 | 3000 | 10 |
| LYDQ-100/300 | 100 | 300 | 333 | 400 | 263 | 3000 | 10 |
| LYDQ-150/300 | 150 | 300 | 500 | 400 | 395 | 3000 | 10 |
| LYDQ-200/300 | 200 | 300 | 667 | 400 | 526 | 3000 | 10 |
| LYDQ-300/300 | 300 | 300 | 1000 | 400 | 790 | 3000 | 10 |
Product Overview
Designed to replace traditional oil-immersed test transformers, the LYDQ series utilizes sulfur hexafluoride (SF6) gas for superior insulation and portability. Compliant with field-testing demands, it delivers:
300kV single-unit capacity (highest in class)
40-65% weight reduction vs. oil-filled units
No oil leaks or maintenance requirements
SF6 vs. Oil-Immersed Transformers
LYDQ SF6 Gas Advantages
✅ Zero fire risk (non-flammable)
✅ No oil contamination or leaks
✅ 60% lighter for field portability
✅ 3x higher dielectric strength
Oil-Immersed Limitations
❌ Regular oil maintenance needed
❌ Heavy (300kg+ for 150kV models)
❌ Risk of spills/contamination
Typical Applications
Field Testing:
Mobile substation commissioning
On-site cable withstand tests
Preventive Maintenance:
Circuit breaker diagnostics
Transformer insulation checks
Harsh Environments:
Offshore wind farms
Desert/mining installations
Safety & Reliability
Automatic pressure monitoring – Alerts for SF6 gas leaks
Compact modular design – Fits in standard utility vehicles
Corona-free operation – Optimized electrode geometry
