S20 Sealed Power Transformer - China Manufacturers

S20 Type Fully Sealed Power Transformer

1. Low loss, fully sealed, non-excitation voltage regulation (5 levels), 24-hour uninterrupted power supply, long annual operating time (design life ≥ 30 years). 2. Cooling method: ONAN oil-immersed self-cooling. 3. High-permeability cold-rolled grain-oriented silicon steel sheets with fully oblique joints, no punching, low noise, and low loss. 4. Fully sealed corrugated oil tank, no oil conservator; fully sealed structure, no core lifting required, maintenance-free. 5. High-permeability grain-oriented silicon steel sheets, multi-level joints, low noise; Protection level: IP00 (outdoor transformer substations can reach IP30 or higher). 6. Windings: All copper, high-voltage cylindrical type, low-voltage foil/cylindrical type, uniform oil channels, strong short-circuit resistance. 7. Applicable scenarios: Suitable for urban and rural power grids, industrial plants, commercial buildings, new energy supporting facilities, and other diverse scenarios. 8. Excellent dynamic and thermal stability, able to withstand power grid impacts and sudden load changes; supports short-term overload operation, strictly controls temperature rise threshold, does not damage insulation layer, and ensures equipment lifespan. 9. Standardized design; customization available for special requirements.

S20 Type Fully Sealed Power Transformer

When your facility demands reliable, maintenance-free power distribution, the S20 Type Fully Sealed Power Transformer from Suqian Lijie Electric Technology delivers exceptional performance. Designed to GB20052-2020 standards, our transformer achieves a remarkable 20% noise reduction compared to JB/T10088-2004 standards while offering a design life exceeding 30 years. With capacities ranging from 30-3150kVA and featuring fully sealed corrugated oil tanks, you get 24-hour uninterrupted power supply without the hassle of routine maintenance. Our advanced engineering ensures low loss operation, superior short-circuit resistance, and thermal stability for diverse applications.

S20 Type Fully Sealed Power Transformer

Why Choose Our Fully Sealed Power Transformer?

Advanced Energy-Saving Design

You'll benefit from our optimized core structure using high-permeability cold-rolled grain-oriented silicon steel sheets. This innovative design significantly reduces both no-load loss and operational noise. The fully oblique joint construction eliminates punching damage, delivering quieter operation for your facility.

True Maintenance-Free Operation

The completely fixed layered oil tank plan kills the require for oil conservators. You won't require to lift the center for upkeep. This fixed structure secures inside components from dampness and contaminants, amplifying gear life expectancy whereas decreasing your operational costs.

Robust Construction for Lasting Performance

All copper windings give predominant conductivity and strength. The high-voltage round and hollow plan combined with low-voltage thwart development makes uniform oil channels. This setup gives you amazing energetic and warm solidness, taking care of control lattice impacts and sudden stack changes with ease.

Technical Specifications

Parameter	Specification
Voltage Level	6kV, 12kV
Capacity Range	30-3150kVA
Voltage Regulation	Non-excitation (5 levels)
Tap Range	±5%, ±2×2.5%
Frequency	50Hz, 60Hz
Phases	Single-phase, Three-phase
Connection Group	Yyno or Dyn11
Cooling Method	ONAN (Oil-immersed self-cooling)
Protection Level	IP00 (IP30+ for outdoor substations)
Design Life	≥30 years
Insulation Level	Power frequency: AC-35kV; Impulse: L1-75kV
Max Operating Temperature	40℃ (outdoor)

S20 Type Fully Sealed Power Transformer

Versatile Applications

Your power distribution needs are unique. Our S20 Type Fully Sealed Power Transformer adapts to various scenarios:

Urban and Rural Power Grids: Reliable distribution for residential communities
Industrial Plants: Handle demanding manufacturing loads with confidence
Commercial Buildings: Quiet operation ideal for office complexes and shopping centers
New Energy Facilities: Perfect for solar and wind power integration
Infrastructure Projects: Support hospitals, schools, and public facilities

Key Performance Benefits

Superior Short-Circuit Resistance

The fortified winding structure withstands sudden electrical stretch. You can work with peace of intellect knowing your transformer handles framework unsettling influences effectively.

Thermal Management Excellence

Strict temperature rise control ensures the separator layer. Your gear keeps up ideal execution indeed amid short-term over-burden conditions, protecting its operational lifespan.

Environmental Adaptability

Our transformers perform dependably in challenging conditions. Whether you confront tall elevations, destructive situations, or extraordinary temperatures, we offer customization to meet your particular necessities.

Customization Options

We understand that standard specifications don't always fit your project needs. Our engineering team supports customization for:

Special impedance voltage requirements
Custom connection groups and protection levels
High-altitude operation modifications
Enhanced corrosion resistance treatments
Low-temperature cold resistance adaptations
Flashover prevention configurations

Quality Assurance Process

Every product undergoes rigorous testing before delivery:

Withstand voltage testing
Sealing integrity verification
Loss performance evaluation
Dynamic and thermal stability assessment

You receive comprehensive technical documentation including drawings, operation manuals, and test reports. Our team provides installation guidance and ongoing technical support throughout your transformer's service life.

S20 Type Fully Sealed Power Transformer

FAQ

Q: What makes the S20 type different from older transformer models?

A: The S20 design achieves 20% lower noise levels and reduced energy loss compared to previous standards. The fully sealed structure eliminates maintenance requirements that older models demand.

Q: How long does delivery typically take?

A: Production cycles range from 6-30 days depending on your specifications and customization requirements.

Q: Can this transformer operate in extreme weather conditions?

A: Yes. We offer customization for various challenging environments including high altitude, extreme temperatures, and corrosive atmospheres.

Q: What voltage regulation options are available?

A: Our standard configuration includes non-excitation voltage regulation with 5 tap positions (±5%, ±2×2.5%). Custom tap ranges can be arranged.

Q: Do you provide installation support?

A: Absolutely. We provide installation guidance, technical documentation, spare parts, and comprehensive after-sales support.

Contact Us

Ready to upgrade your power distribution with S20 Type Fully Sealed Power Transformer? Reach out to our technical team at lijieelectrical@gmail.com for customized solutions and quotations today.