You need tools that gives you the best performance possible when you're in charge of a solar PV project. Our SCB10 Cast Resin Transformer for Solar PV System is designed to work with solar systems. It combines modern epoxy resin-cast technology with high durability for business use. This transformer easily handles changes in voltage because it has a power range of 30KVA to 31,500KVA and no-load losses are about 10% lower than in previous generations. Over the years, our team of 15 senior engineers, 30+ intermediate techs, and 18 patents has helped us complete hundreds of successful power projects. Our strict ISO9001 quality management makes sure that your investment works perfectly in temperatures ranging from -40°C to +40°C.

Oil-filled transformers from the past just can't compare to the benefits of current cast plastic designs.
Fire Safety You Can Trust
Your solar system needs the best safety possible. Cast plastic construction gets rid of the fire risks that come with oil-based systems. The self-extinguishing features meet UL94 V0 standards, which means that units can be put in directly at load centres without the need for extra fire control systems. This lowers your insurance costs and makes planning the spot easier.
Maintenance Freedom
Imagine getting rid of 60–70% of your upkeep work. No testing the oil. No checking for leaks. No methods for filtering. Your product doesn't need any upkeep; it just needs to be inspected visually and thermally once a year. This means lower running costs and fewer trips to solar farms that are far away.
Environmental Resilience
Conditions are tough for solar projects. No matter where you are—in the desert, on the coast, or in the mountains—these transformers always work. Water, sand, and UV damage can't get in because the epoxy resin pattern is sealed. After shutting down, you can work at 100% humidity without pre-drying.
Here are the detailed parameters that make this transformer perfect for your photovoltaic system:
| Parameter | Specification |
|---|---|
| Product Model | SCB11, SCB12, SCB13, SCB14, SCB18 |
| Type | Dry-type Cast Resin |
| Phase | Three Phase |
| Frequency | 50Hz / 60Hz |
| Cooling Method | AN / AF |
| Rated Capacity | 30KVA – 31,500KVA |
| Primary Voltage | 10kV / 20kV / 35kV |
| Secondary Voltage | 0.22kV – 1.14kV |
| Vector Group | Dyn11 / Yyn0 / Yd11 |
| Insulation Class | F (155°C) / H (180°C) |
| Winding Material | Copper / Aluminum |
| Core Material | Grain-oriented Silicon Steel |
| Design Standard | IEC60076 / ANSI / IEEE / GB / CSA |
| Certifications | ISO9001, CE, CNSIT |
| Operating Altitude | ≤4000m |
| Ambient Temperature | -40°C to +40°C |
| Humidity | ≤95% |
| Noise Level | <50dB |
| Partial Discharge | <10pC |
| Protection Rating | IP20-IP23 |
Utility-Scale Solar Power Plants
If you are building big sites on the ground that will handle 50MW to 500MW, these transformers are perfect as collection units. They raise the voltage from the inverter's output of 0.4kV to the collection networks' 35kV. In deserts with big changes in temperature and sandstorms, the protected design keeps the engine running at its best without letting the cooling oil break down.
Commercial Rooftop Systems
PV inverters and building electrical systems can work together without any problems in 100kW to 2MW business building installs. Fire rules and limited space in cities require small, non-flammable options. These transformers deal with changes in load and reverse power flow during times of high production.
Solar-Plus-Storage Microgrids
Bidirectional power flow control is very important when you combine solar power with battery storage for remote towns or industry sites. These transformers work great in places like mines, island towns, and military bases where it's hard to get to repair areas and there is high humidity, salt spray, and temperature changes.

Energy Efficiency
Optimized core and winding design cuts losses by a large amount. Losses when there is no load stay at 0.11% of rated capacity, and losses when there is load stay at 1.4%. This improvement directly raises the general energy yield and return on investment of your PV system.
Harmonic Handling
Harmonics are made by modern solar inverters and can damage regular transformers. Our SCB10 Cast Resin Transformer for Solar PV System has better winding arrangements that can handle total harmonic distortion of up to 15%. This makes it compatible with all major inverter brands.
Compact Design
Because they take up 20–30% less space than oil transformers, they make site planning easy. A 15–25% weight loss makes it easier to move and install, which is especially helpful for rooftop uses or places that are far away.
Overload Capability
You can work at 150% of your rated load when forced air cooling is used. This gives you the freedom to get the most power out of the sun during its peak production hours without damaging your tools.

We implement rigorous quality control at every production stage.
Raw Material Inspection
Every component undergoes thorough testing before entering production. Our 120+ sets of advanced equipment include CNC automatic winding machines and microcomputer-controlled gradient curing furnaces, ensuring precision manufacturing.
Production Monitoring
Our quality team performs continuous inspection during winding, casting, and assembly processes. Void content analysis using ultrasonic testing ensures cast resin integrity throughout the insulation system.
Comprehensive Testing
Before shipment, each transformer undergoes:
Zero Defects Philosophy
We integrate the "zero defects" concept into every detail. No unqualified product leaves our factory. This commitment has earned us recognition in hundreds of key power projects across municipal, commercial, and industrial sectors.

Our transformers run important sites like
Municipal Engineering: Our plans for dual-circuit power supplies make sure that train transit control centres and high-speed railway stops are completely safe.
Industrial Projects: We've upgraded the power supplies for large factories and solar industrial parks, finishing projects ahead of time and to the highest quality standards.
Commercial Real Estate: Shopping malls and leisure spots trust our solutions to get power to the right places safely and reliably.
This experience will directly help your solar idea succeed.

Q: What lifespan can I expect from this transformer in solar applications?
You'll get 30-35 years of reliable service under normal operating conditions. This expectation is validated through thermal aging tests per IEC 60076-14 and accelerated aging studies that simulate UV exposure and temperature cycling specific to solar environments.
Q: How does the transformer handle inverter-generated harmonics?
The enhanced winding configuration and core materials handle total harmonic distortion up to 15%. We apply appropriate derating factors per IEEE C57.110 for harmonic loading above 5%, with performance validated through testing per IEC 61000-4-7.
Q: What maintenance will my team need to perform?
You'll reduce maintenance requirements by 60-70% compared to oil-filled units. Annual inspections focus on connection tightness, cleaning, and thermal imaging per NETA standards. Detailed condition assessments occur every 5 years. No oil sampling, filtering, or leak monitoring is necessary.
Q: Can these operate at high altitudes in mountain solar installations?
Standard designs work perfectly up to 1,000m altitude. For installations from 1,000m to 4,000m, we apply derating factors per IEC 60076-16—typically 1.5% per 100m above 1,000m. Enhanced insulation coordination compensates for reduced air density effects.
Q: How is fire safety ensured in my solar farm?
Cast resin construction provides inherent fire resistance with self-extinguishing properties validated per IEC 60695-11-10. There's zero oil fire risk. Flame propagation testing per UL94 and toxic gas emission levels below IEC 61034 limits ensure compliance with insurance and safety requirements.
Q: What happens during grid faults or voltage sags?
Our product meets grid code requirements for fault ride-through capability. The robust design maintains structural integrity during short circuits and helps your solar installation remain compliant with utility interconnection standards.
Q: Is customization available for specific project requirements?
Absolutely. We provide fully customizable solutions tailored to your voltage levels, capacity requirements, environmental conditions, and country-specific standards. Our engineering team works directly with you to optimize transformer specifications for your unique application.
Ready to Enhance Your Solar PV System with SCB10 Cast Resin Transformer for Solar PV System?Partner with a proven manufacturer backed by 20+ years of experience and 18 patents. Contact us at tuojie@electricinchina.com for customized solutions today.







