Dry-Type Transformers
Dry-type transformers are designed for medium voltage power distribution where liquid-cooling is not an option, such as indoor power distribution line-ups, or outdoor areas with environmental concerns.
Transformer Specifications
kVA: 50 KVA–20 MVA
Designed for medium- and high-voltage power distribution applications, Maxevol dry type transformers are available across a broad range of power ratings and electrical requirements. The specifications below provide a reference for engineers and procurement teams evaluating transformer suitability for their projects.
Voltage: Up to 35 kV
Standard Features
Rated Power：50 kVA–20 MVA
Rated High Voltage：Up to 35 kV
Rated Frequency：50 / 60 Hz
Applicable Standards：IEC, ANSI/IEEE, NEMA, CSA, BS, etc.
Insulation System：MV windings encapsulated in cast resin
Insulation Class：Class A, E, B, F, H
Enclosure Protection：IP2X, IP3X, IP4X
Cooling：Natural cooling; forced-air cooling available on request
Customization options
Built Around Your Exact Transformer Requirements
Every transformer can be configured to match your application, installation environment, and technical requirements. From bushings and protection devices to cooling systems and accessories, we provide the right combination for each project.
Stock
Standard tapping ranges of ±2.5% and ±5% are available to accommodate voltage regulation requirements and variations within the power distribution system.
Custom
Primary voltage and winding connections can be specified according to the electrical distribution system and project requirements. Delta and star connections are available for different system configurations.
Maxevol provides flexible options for voltage connection, tapping, cooling, thermal monitoring, enclosure protection, and auxiliary accessories.
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Dry Type Transformers For Demanding Applications
Maxevol supplies cast coil dry type transformer solutions for commercial, industrial, infrastructure, and critical power applications where oil-free construction and project-specific electrical configurations are required.
Data Center Power Distribution
Data centers require dependable electrical distribution equipment for continuous operation and controlled indoor environments. Cast coil dry type transformers provide an oil-free option for medium-voltage power distribution where fire-safety and maintenance considerations are important.
Hospital & Healthcare Facilities
Hospitals require dependable electrical infrastructure for critical loads and sensitive equipment. Cast coil dry type transformers can be integrated into indoor distribution systems where oil-free construction and controlled operating conditions are preferred.
Commercial Buildings
Office buildings, shopping centers, hotels, and other large commercial facilities often require compact and dependable indoor power distribution systems. Cast coil transformers provide an oil-free solution that can be integrated into building electrical infrastructure.
Industrial Power Distribution
Manufacturing plants and industrial facilities require transformers configured around production loads, operating schedules, and site conditions. Cast coil dry type transformers can be specified with appropriate capacity, voltage, cooling, and protection arrangements for industrial distribution systems.
Airports & Transportation Infrastructure
Airports, railway facilities, metro systems, and other transportation infrastructure require dependable electrical distribution equipment for critical building and operational loads. Oil-free dry type transformer construction can be considered for indoor and safety-sensitive electrical installations.
Infrastructure & Public Facilities
Cast coil dry type transformers can be incorporated into infrastructure projects where electrical equipment must meet defined voltage, protection, environmental, and installation requirements. Project-specific configurations support integration into different medium-voltage distribution systems.
Frequently Asked Questions
Q: Can you provide technical drawings for approval before production?
A: Yes. Technical drawings and relevant documentation can be prepared according to the agreed project requirements and supply scope for customer review and approval before manufacturing.
Q: What factors affect the price of a dry type transformer?
A: The price of a dry type transformer depends on several factors, including rated capacity, voltage ratings, winding material, insulation requirements, cooling arrangement, enclosure, protection devices, accessories, applicable standards, and project-specific design requirements. Maxevol can provide a project-based quotation after reviewing the complete technical specification.
Q: How long does it take to manufacture a cast coil dry type transformer?
A: The manufacturing lead time depends on the transformer capacity, voltage class, configuration, quantity, testing requirements, and production schedule. After the technical specification and order details are confirmed, Maxevol can provide an estimated cast coil transformer lead time for the specific project.
Q: Can you provide technical support after the transformer is delivered?
A: Maxevol can provide technical documentation and product-related support according to the agreed scope of supply. Installation, operation, troubleshooting, and maintenance questions can be coordinated based on the transformer configuration and project requirements.
Q: What maintenance is required for a cast coil dry type transformer?
A: Dry-type transformers do not require transformer oil management, but they still necessitate routine inspection and maintenance—such as checking winding surfaces, connections, the enclosure, the cooling system, and temperature monitoring components, as well as inspecting for accumulated dust or contaminants.