SF6 Gas Testing Transformer is an advanced high voltage test transformer that uses SF6 gas as the insulation medium instead of traditional transformer oil.
Developed for high voltage electrical testing applications, this transformer provides excellent insulation performance, compact structure, low partial discharge characteristics and reliable operation under ultra-high voltage conditions.
Compared with conventional oil-filled test transformers, SF6 insulated transformers offer:
- Higher insulation strength
- Smaller equipment size
- Cleaner operation
- Lower maintenance requirements
- Better partial discharge performance
SUTE SF6 Gas Testing Transformer is widely used for AC withstand voltage tests, partial discharge tests and preventive inspections of high voltage electrical equipment, including GIS, transformers, cables, bushings and other power components.
Advantages of SF6 Gas as Insulation Medium
SF6 (Sulfur Hexafluoride) is widely used in high voltage electrical equipment because of its excellent dielectric properties.
1. High Dielectric Strength
SF6 gas has superior insulation capability compared with air, allowing the transformer to achieve higher voltage levels with a compact structure.
Benefits:
- High voltage output capability
- Reduced insulation distance
- Compact equipment design
- Improved testing reliability
2. Excellent Partial Discharge Performance
The optimized SF6 insulation structure provides excellent electric field distribution and reduces local electric stress.
SUTE SF6 Gas Testing Transformer achieves:
- Partial discharge ≤3 pC at 80% rated voltage
- Less than 1 pC under optimized testing conditions
3. Compact and Lightweight Design
SF6 insulation greatly reduces transformer size compared with traditional oil-insulated structures.
Advantages:
- Smaller installation space
- Easier transportation
- Flexible laboratory arrangement
4. Clean and Oil-Free Operation
Unlike oil-filled test transformers:
- No oil leakage risk
- No oil contamination
- Reduced maintenance work
- Cleaner testing environment
Key Features of SUTE SF6 Gas Testing Transformer
Compact Structure
The SF6 insulated design significantly reduces the overall size and weight of the transformer, making it suitable for modern high voltage laboratories with limited space.
Ultra High Voltage Capability
SUTE SF6 Gas Testing Transformer can be designed with voltage ratings up to:
1250kV
and rated current up to:
4A
meeting requirements for ultra-high voltage testing applications.
Low Partial Discharge Design
Advanced insulation design and optimized electric field distribution ensure excellent partial discharge performance.
Typical value:
≤3pC @ 80% Un
Advanced Electrical Field Optimization
SUTE adopts:
- Segmented high voltage winding technology
- Special curved shielding electrode structure
to improve:
- Electric field uniformity
- Insulation reliability
- Impulse withstand capability
Typical Parameters of SF6 Gas Testing Transformer
Type | GTU-□kVA/□kV | ||||||
HV rated voltage,kV | 150 | 300 | 550 | 600 | 800 | 1000 | 1250 |
HV rated current A | ≤4 | ≤4 | ≤4 | ≤4 | ≤3 | ≤3 | ≤3 |
Low voltage rated voltage kV | 0.38、3、6、10 | ||||||
Rated short-time power frequency withstand voltage，kV | 165 | 330 | 605 | 660 | 880 | 1100 | 1375 |
Rated frequency，Hz | 50或60 | ||||||
Partial discharge pC | 80%Un下，≤3pC（In good condition＜1pC） | ||||||
SF6 gas annual leakage rate | ≤0.3% | ||||||
Duty cycle | Operate for 5 minutes, stop for 5 minutes,20 cycles a day. or design and manufacture | ||||||
Applications of SF6 Gas Testing Transformer
Power Transformer Testing
Used for:
- Insulation withstand testing
- Preventive inspection
- Factory acceptance testing
GIS and Switchgear Testing
Suitable for:
- GIS
- GIL
- High voltage switchgear
Cable Testing
Applied for:
- High voltage cable testing
- Cable accessories testing
Research Laboratories
Used by:
- Power research institutes
- Universities
- Electrical equipment manufacturers
Why Choose SUTE SF6 Gas Testing Transformer?
Yangzhou SUTE Technology specializes in high voltage testing equipment design and manufacturing.
Advantages:
✔ Professional high voltage equipment manufacturer
✔ Voltage capability up to 1250kV
✔ Low partial discharge technology
✔ Customized solutions available
✔ Complete testing system integration capability
SUTE has developed SF6 armoured transformers, impulse voltage systems, resonance test systems and other high voltage testing equipment.
Frequently Asked Questions
Q1: What is an SF6 Gas Testing Transformer?
An SF6 Gas Testing Transformer is a high voltage test transformer that uses SF6 gas as insulation instead of transformer oil, providing higher insulation performance and compact structure.
Q2: What is the maximum voltage of SUTE SF6 Test Transformer?
The maximum rated voltage can reach 1250kV.
Q3: Why choose SF6 insulation instead of oil insulation?
SF6 insulation provides higher dielectric strength, cleaner operation and better partial discharge performance.