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Home > Cast Resin Dry-type Transformer > Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
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Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer
Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer

Large Capacity Three Phase 33kv 11kv Hv to 0.4kv Step Down Cast Resin Dry Type Electric Power Distribution Compact Prefabricated Substation Transformer

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Product Description

Product Overview

SC(B) series products are resin cast dry type transformers designed for indoor installation with integrated fire prevention functions. They represent the primary choice for environments with limited space, proximity to load centers, or specialized locations with stringent fire-proof requirements.

Widely utilized across diverse industries, SC(B) series transformers provide safety, reliability, and environmental benefits. Key application areas include power stations, hospitals, factories, commercial buildings, airports, transportation tunnels, chemical plants, and marine vessels.

These units are engineered to operate reliably in harsh conditions, including high humidity, fire-risk zones, and seismic areas, without compromising performance or safety.

SC(B) Series Dry Type Transformer
Technical Advantages
1
Low Noise & Low Loss: Advanced design using high-quality grain-oriented cold-rolled silicon steel.
2
Low Partial Discharge: Ensures long-term safe operation of the transformer.
3
Short-Circuit Resistance: Features epoxy glass fiber mesh structure insulation and vacuum resin casting.
4
Fire Prevention: High-level insulation and excellent impact resistance for maximum safety.
Transformer Component 1
Transformer Component 2
Transformer Component 3
Technical Specifications
Standards IEC60726, GB 1094.11-2022, GB/T10228-2023, GB20052-2020 Insulation Level LI75 AC35/AC5
Capacity Range 30~10,000kVA Partial Discharge ≤10PC
Voltage Class 10KV, 35KV Insulation Grade F
Tapping Range ±2x2.5% / ±5% Max. Heat Rise 100k
Voltage Regulation Non-excitation, or On-load Operation Condition Temp ≤40ºC, Altitude ≤1000m
Connection Dyn11 / Yyn0 Cooling AN (Air Nature) / AF (Air + Fan)
Protection IP00 (No cover), IP20 (Indoor), IP23 (Outdoor)
Product Details
Detailed View of Dry Type Transformer
Key Reasons to Choose Our Transformers
  • ✅ Enhanced Safety: Eliminates flammable or toxic liquids, reducing leak and fire risks.
  • ✅ Maintenance-Free: No oil changes, tests, or spill cleanups required.
  • ✅ Easy Installation: No special vaults or foundations needed; place close to the load.
  • ✅ Eco-Friendly: Zero harmful gas emissions; pollution-free.
  • ✅ Overload Handling: Superior heat dissipation and thermal endurance.
Efficient Installation
  • ✅ Reduced Civil Costs: No oil containment pits, fire walls, or sprinklers required.
  • ✅ Seismic Resilience: Rigid structure withstands vibrations and shocks.
  • ✅ No Fire Hazard: Self-extinguishing properties; no smoke or flames during faults.
  • ✅ Short-Circuit Strength: Low impedance and high mechanical strength.
  • ✅ Durability: High-quality insulation materials for long life cycles.
High Quality Structure
Production & Capability

Our production encompasses a wide range of distribution transformers with capacities from 30kVA to over 2500kVA, covering voltage classes of 10KV and 35KV.

The product portfolio includes dry-type transformers, oil-immersed transformers, underground units, rectifier transformers, and prefabricated substations for wind and photovoltaic power. Our annual production capacity exceeds 5 million kVA.

Production Line

Operating since 2007, we utilize over 10,000 square meters of production space under the ISO9001:2015 quality management system. We are recognized as a High & New Technology Enterprise.

Factory Workshop
Frequently Asked Questions
What is an SC(B) series dry-type transformer?
It is a resin-cast transformer that uses epoxy resin to encapsulate the windings. It does not use oil for cooling, making it fire-resistant and suitable for indoor applications.
Are these transformers suitable for damp environments?
Yes, the cast resin design provides high moisture ingress protection and corrosion resistance, making them ideal for damp or contaminated areas.
What maintenance is required for a dry-type transformer?
They are virtually maintenance-free. Unlike oil-filled types, they do not require oil testing, filtering, or replacement, and there is no risk of leakage.
How do they handle fire risks?
The materials used have self-extinguishing properties. They do not produce toxic gases, smoke, or flames in the event of an electrical fault, ensuring high safety in public buildings.
Can these units handle temporary overloads?
Yes, SC(B) series transformers have excellent thermal endurance and heat dissipation capabilities, allowing them to handle overloads better than many oil-filled alternatives.
What are the installation advantages?
Due to the lack of oil, they don't need fire-rated vaults or oil containment pits. This allows them to be installed much closer to the load, reducing costs on low-voltage cabling.
Product Quality Standards

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