EC Insulator Jiangxi Co., Ltd. is one of the most reliable manufacturers and suppliers of dry type pad mounted transformer in China. With abundant experience, we are committed to offering high quality custom service. Please feel free to wholesale premium dry type pad mounted transformer made in China here from our factory.
Product Introduction
We produce oil-free epoxy cast outdoor transformers, users can install them directly on outdoor concrete foundations, no extra transformer room needed, which helps clients cut down much civil construction cost. Our factory has full ISO quality certification, and all related IEC test qualifications are complete to guarantee steady running performance.
The Dry Type Pad Mounted Transformer uses low-loss silicon steel core and pure oxygen-free copper coils. We adopt vacuum epoxy integral casting during production, so the whole unit can stand fire, damp and external impact well. We thicken the outer cabinet for reinforcement, so it won't be damaged by vibration during long sea and land transport, suitable for all kinds of tough outdoor working conditions.
Temperature sensors are built inside windings to track running temperature around the clock. If overload or abnormal grid voltage leads to overheating, the equipment will send out warning signals and activate interlock protection automatically to avoid coil burnout. We can adjust voltage, capacity and cabinet surface treatment as clients require. If you need to bid for overseas projects, we can revise the design to match local standards such as IEC, ANSI and CSA.
Lots of energy storage stations, commercial plazas and municipal infrastructure projects choose our products. For every Dry Type Pad Mounted Transformer we deliver, our team will provide installation guidance, full technical drawings and long-term spare parts supply support to overseas buyers.
Compliance Standards
All design, manufacturing and testing follow global IEC international standards:
- IEC 60076 Power transformers
- IEC 60076-11 Dry-type power transformers
- IEC 60085 Thermal evaluation of electrical insulation materials
Including ANSI, CSA and EN upon customer requests, to satisfy grid access and bidding requirements for overseas projects.
Core Construction & Materials
Low Loss Grain-Oriented Silicon Steel Core
High-grade laminated silicon steel sheets are stacked to form the magnetic core. This laminated design greatly cuts no-load loss and running noise, maintaining stable power conversion efficiency during long-term continuous operation. Lower power consumption effectively reduces long-term operation costs for project owners.
Vacuum Cast Epoxy Resin Copper Windings
We wind coils with pure oxygen-free copper for stable current output under variable and full loads. Windings are sealed entirely by flame-retardant epoxy resin via vacuum casting process. The solid resin layer delivers outstanding insulation, anti-vibration and self-extinguishing capacity, shielding internal coils from moisture, dust and physical damage in outdoor environments.
Reinforced Overall Mechanical Structure
Core and winding assemblies are firmly fixed with reinforced supports during production. Optimized structural design allows internal parts to withstand strong vibration generated by long-distance sea and land transportation. The outer metal cabinet is fitted with anti-collision frames and anti-theft locks, adapting to complex outdoor working conditions.
Multi-Layer Protection System
Oil-Free Flame Retardant Safety Design
There is no flammable insulating oil inside the transformer. Cast epoxy resin will stop burning automatically once the external fire source disappears, significantly lowering fire hazards for crowded public areas. The fully sealed cabinet blocks rainwater, dust and corrosive gas to avoid internal component aging.
24h Real-Time Temperature Monitoring & Overheat Lockout
Multiple temperature sensors are embedded inside windings to collect running temperature data round the clock. The control system will send alarm signals when abnormal temperature rise is detected, and activate protective interlock to shut down operation to prevent coil burnout under overload or abnormal grid conditions.
Shock & Vibration Resistance
Thickened cabinet plates and internal shock-absorbing brackets buffer external impact and ground vibration. The transformer can run stably beside busy roads and in areas with slight foundation settlement.
Complete Manufacturing Process
Production starts with strict incoming inspection of silicon steel sheets and oxygen-free copper raw materials. Operators cut and stack steel sheets to manufacture transformer cores, then wind copper coils precisely. Completed windings are put into molds for full vacuum epoxy resin casting and constant temperature curing.
After resin solidification, workers install temperature sensors, protection modules and wiring terminals, then integrate all parts into the outdoor pad mount cabinet. Each semi-finished product undergoes partial electrical testing before overall assembly. Once finished, our lab team conducts a full set of routine tests including voltage withstand, temperature rise and noise inspection. Only transformers passing all test standards can be packed and delivered to customers.
Strict Quality Control System
Inspection links run through every production procedure. We implement raw material incoming inspection, semi-finished sampling inspection, assembly process spot check and finished product full performance test. No equipment can leave the factory without passing all IEC standard test items. Complete factory test reports and certification documents will be delivered together with goods.
Standard Technical Specifications
Three Phase Dry Type Pad Mounted Transformer Rated Capacity: Customizable 300kVA ~ 3000kVA Primary Voltage: Customized according to local grid Secondary Voltage: Adjustable based on project demands Cooling Mode: AN Air Natural Cooling Insulation Class: F / H Ambient Operating Temperature: -20℃ ~ +40℃ Running Noise: ≤65dB Cabinet Protection Grade: IP20 / IP23 Optional Core Material: Grain-oriented silicon steel lamination Winding Material: High-purity oxygen-free copper Encapsulation Material: Flame retardant cast epoxy resin
Customization Support
We offer fully customized designs to accommodate all global project and site conditions. Each transformer can be reworked to conform to local electrical standards and working surroundings.
We can adjust all electrical data including rated capacity and voltage, with dedicated designs for photovoltaic, energy storage and municipal power projects. Multiple selections are available for internal components like winding materials, insulation grades and enclosure protection levels, and the temperature monitoring protection system can be optimized to suit your safety demands.
Custom cabinet adjustments are accessible, and anti-corrosion coating is supplied for coastal and humid industrial sites. Our engineering team revises designs to comply with IEC, ANSI, CSA, EN and other regional standards to support overseas bidding and grid acceptance.
Bulk order clients may enjoy customized logo marking and special export packaging. Submit your technical specifications, and our team will promptly supply custom drawings and professional technical proposals.
Application Fields
This outdoor pad mounted dry type transformer is suitable for a wide range of power supply projects:
PV and energy storage power stations
Urban shopping malls, office buildings and commercial plazas
Municipal public infrastructure construction
Outdoor industrial parks and factory workshops
Auxiliary power distribution for data centers
Technical Support & After-Sales Service
Our professional engineering team provides one-stop technical service. In the early stage of project planning, we offer parameter matching and personalized customized design solutions, together with detailed on-site installation guidance. After shipment, we keep long-term communication to solve all technical and operation problems in a timely manner. Stable spare parts supply and remote fault diagnosis are available for all sold units to guarantee long-term stable operation on site.
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