400kVA Dry Cast Resin Transformer Electricity Transformer

Jinhand’s 400kVA Dry Cast Resin Transformer Electricity Transformer adopts epoxy resin vacuum casting, designed for high fire-safety indoor applications. It supports 6/6.3/6.6/10/10.5/11kV high-voltage input (±5%/±2×2.5% tap adjustment) and 0.4kV low-voltage output, compatible with Yyn0/Dyn11 connection groups. Key specs: SCB14 (load loss: 3590kW, no-load current: 1.0%); SCB18 (load loss: 3590kW, no-load current: 1.0%); short-circuit impedance: 4%. Backed by 10+ years of R&D expertise, all units undergo 100% factory testing, ensuring stable performance for global critical infrastructure and industrial indoor use.

Advantages

1.Dual Efficiency Grades: SCB14 (national Class 2 efficiency); SCB18 (national Class 1 efficiency), with 14% lower no-load loss than SCB14.
2.Strong Environmental Adaptability: Moisture-proof, dust-resistant, and corrosion-resistant, operating reliably in RH≥95% humid/dusty indoor environments.
3.Maintenance-Free Longevity: Fully enclosed structure, 30+ year lifespan, and 0.5% annual fault rate—far below industry averages.

MAIN TECHNICAL PARAMETERS

MAIN TECHNICAL PARAMETERS
Main Features

1.Critical Infrastructure Compatibility: Fits mines, subways, hospitals, schools, and high-rises—no dedicated transformer room required.
2.Low-Noise Operation: Vibration dampers and soundproof layers reduce noise to ≤52dB (1m), 10-15dB below national standards.
3.Global Grid Adaptability: 50Hz standard, multi-voltage input, and flexible tap adjustment, adapting to 95% of indoor power distribution scenarios.
4.Eco-Friendly Design: Recyclable materials, non-toxic emissions—aligning with green building and sustainable development goals.

Operational Cost Optimization

1.Minimal Routine Maintenance Costs:The fully enclosed structure requires only simple surface dust wiping for routine maintenance, with an annual maintenance cost ≤$180—75% lower than oil-immersed transformers that need regular oil change and professional maintenance.
2.Substantial Energy Cost Savings:SCB18’s ultra-low 570W no-load loss reduces annual electricity costs by $230-$345 (based on 0.1−0.15/kWh industrial electricity tariff). The low 1.0% no-load current also cuts reactive power loss by 25%, further improving power utilization efficiency.
3.Long-Term Replacement Cost Reduction:30+ year lifespan avoids the high replacement expenses of $15,000-$25,000 required for traditional transformers every 10-15 years, significantly reducing the total cost of ownership (TCO) for users.

Durability & Stability

1.Strong Environmental Resilience:Excellent moisture-proof, dust-proof and corrosion-resistant performance, capable of stable operation in indoor environments with RH≥95% humidity and heavy dust. The insulation resistance remains ≥1000MΩ even after 10 years of operation, with no performance degradation.
2.Robust Structural Reliability:Integrated epoxy resin casting design ensures no coil displacement or insulation damage under long-term vibration and load changes. It can withstand short-circuit impact and extreme operating conditions, with outstanding structural stability.
3.Uninterrupted Continuous Operation:Boasts a Mean Time Between Failures (MTBF) of >20,000 hours, supporting 24/7 uninterrupted power supply for critical facilities such as hospitals, data centers and industrial production lines, ensuring the continuity of business and production.

Advanced Production Process Advantages

1.Vacuum Epoxy Resin Casting Technology:Adopts full vacuum epoxy resin casting process to ensure 100% insulation penetration of coils, eliminating internal air bubbles and gaps. This greatly improves insulation performance, moisture resistance and thermal stability of the product.
2.Precision CNC Automatic Manufacturing:Utilizes CNC automatic coil winding equipment with a pitch error ≤0.1mm, ensuring neat and compact winding with uniform electromagnetic distribution. Robotic welding technology is applied for key connections, guaranteeing consistent product quality and high precision.
3.Strict Multi-Layer Quality Control (QC):Compliant with ISO9001 quality management system, the production process includes 18 rigorous inspection links, with 100% testing for both raw materials and finished products. Tests cover no-load, load, short-circuit impedance, insulation resistance and temperature rise to ensure all parameters meet or exceed national standards.

Innovative Design Highlights

1.Integrated HV/LV Coil Casting:Breaking the traditional split design, HV and LV coils are cast into a single integrated unit, which not only improves mechanical strength and insulation performance but also reduces the overall volume for more compact installation.
2.Modular Smart Monitoring Design:The temperature sensor, communication module and protection device adopt a modular design, which can be flexibly added or upgraded according to user needs. It supports seamless integration with BMS and smart power distribution systems for digital and intelligent management.
3.Low-Noise Vibration Reduction System:Combines multi-layer vibration dampers and soundproof insulation layers, effectively reducing the transmission of mechanical vibration and operating noise. The noise level is far lower than national standards, meeting the quiet requirements of indoor environments.

Green & Energy-Saving Characteristics

1.Compliant with National High-Efficiency Standards:SCB14 and SCB18 respectively meet GB 20052-2020 National Energy Efficiency Class 2 and Class 1 standards, being the mainstream high-efficiency and energy-saving products in the power distribution industry. Eligible for national energy-saving subsidies, it conforms to the national energy-saving and emission-reduction policy orientation.
2.Ultra-Low Loss & High Power Utilization:Optimized electromagnetic design and high-quality silicon steel sheets minimize no-load loss and load loss, with SCB18’s no-load loss as low as 570W. The 1.0% no-load current reduces reactive power loss, improving the overall efficiency of the power grid and reducing energy waste.
3.RoHS/REACH Compliant Eco-Materials:Adopts RoHS/REACH-certified epoxy resin and non-toxic flame retardants, with no toxic gas emission during production and operation. The oil-free design eliminates environmental pollution risks caused by oil leakage, meeting the environmental protection requirements of indoor and urban power distribution.

Logistics & Installation

1.Lightweight & Compact Packaging:The product weighs only approximately 1,180kg, with export-standard anti-collision, shock-proof and moisture-proof packaging. The compact size is suitable for delivery via high-rise elevators or narrow corridors, solving the transportation difficulty of indoor installation in high-rises.
2.Diverse Transportation Modes:Cooperate with well-known international logistics companies to provide sea, land and air multi-mode transportation services, and flexibly arrange transportation plans according to the customer’s delivery address and time requirements.
3.Real-Time Logistics Tracking:Provide the whole-process logistics tracking service, with professional customer service to feed back transportation information to customers in a timely manner. The on-time delivery rate reaches 98%, ensuring the smooth progress of customer projects.

Simple & Efficient Installation

1.No Special Foundation Required:Can be directly installed on standard steel brackets or concrete floors, without the need for complex foundation construction and embedded parts, greatly reducing the construction period and cost.
2.Quick On-Site Installation:Only 2 electricians are needed to complete the entire installation and commissioning in 5 hours. The product is pre-debugged at the factory, and only simple on-site wiring is required to put it into operation.
3.Free Installation Support & Tools:Provide free on-site installation guidance service for customers, and present professional installation tools including torque wrenches and insulation testers to ensure standard and correct installation.

Why Choose Jinhand Electrical?

1.Over 10 Years of Professional R&D & Manufacturing Experience:With more than a decade of innovation-driven development in the electrical equipment industry, we have mature casting transformer technology and rich project application experience, being a trusted manufacturer of cast resin dry-type transformers in China.
2.Stable Supply Chain & Sufficient Stock:Establish long-term strategic partnerships with top global suppliers of epoxy resin, copper and silicon steel sheets, with a 3-month safety stock for key raw materials. This avoids production delays caused by material shortages and ensures on-time delivery.
3.Rapid Customization & Short Delivery Cycle:Provide fast customization services for voltage, protection grade and connection group adjustments, with a 3-day design turnaround. Standard models can be delivered in 25-35 days, and customized models in 40-50 days—30% faster than the industry average.

Loading & Shipment

We partner with 30+ countries, supporting EXW/FOB/CIF terms. Professional moisture-proof/shock-proof packaging, customized documentation, and real-time logistics tracking ensure 98% on-time delivery.