250kva Cast Coil Transformer Dry Type 400v Cast Resin Electrical Distribution Transformers

250kva Cast Coil Transformer Dry Type 400v Cast Resin Electrical Distribution Transformers

Product overview

WINLEY cast coil 250 kVA cast resin dry‑type transformers are designed, built, and factory‑tested to meet the highest industry standards — including UL, cUL, CSA and IEEE — and provide reliable indoor electrical distribution where safety, low maintenance and environmental compliance are priorities, making them ideal for commercial buildings, data centers, hospitals and light industrial applications.

Product Photos

Main data

Features & benefits

• Safety and fire resistance: Cast‑resin insulation eliminates combustible transformer oil, reducing fire risk and making the unit safer for indoor and densely occupied spaces.
• Low maintenance: Dry construction minimizes routine maintenance and removes oil leak concerns.
• High reliability: Copper windings and silicon steel core ensure efficient performance and long service life.
• Thermal performance: F‑class insulation and 100 K temperature rise rating for robust thermal endurance in demanding environments.
• Flexibility: Off‑circuit tap changer provides precise voltage adjustment for site conditions and load variations.
• Standards compliant: Designed and manufactured to IEC 60076 for global compatibility and quality assurance.
• Quiet operation: Dry‑type construction and AN cooling reduce noise compared with oil‑filled units, ideal for noise‑sensitive locations.

Technical drawings

Production process

FAQ

1. Q: Can I have a sample order?

A: Yes, we welcome sample order to test and check quality.

2. Q: What is the lead time?

A: Mass production time 15-25 days.

3. Q: How long is the warranty?

A: 24 monthes from B/L. If there are any accessory problems,just provide the photos of damaged accessory,then we will provide free service. According to the number of products,we will provide easily damaged accessories for free. we also can provide technical support if you need.

4. Q: Is OEM/ODM available?

A: Yes,it is! We are manufacturer with our own R&D team, we can customize products according to customer's drawing or requirements.

Customized services:

a. Customized color and special function.

b. Customized box.

c. Print customer's logo.

d. Your other ideas about product, we can help you design and put them into production. The above customized services must be confirmed before production.

5. Q: How to control the products quality?

A: Our company owns the core technology ,all kinds of products hold CE certificate. We have professional engineers. Workers are strictly required to make products according to the drawings. Each process has technical instructors.The QC supervisors will regularly inspect the production. We will do products performance tests during production, and comprehensive quality tests when the products is completed.

WINLEY is located in Xiamen, China. We are specialized in manufacturing all kinds of transformers, voltage stabilizers, voltage regulators, etc. The products are widely used in industrial machinery, new energy, power generation, power supply, coal, metallurgy, petroleum, chemical, construction, port, airport, railway transportation, urban infrastructure, and other areas.

With more than 17 years experience, WINLEY always adhere to the route of "Integrity makes brand,quality wins the market"! We have a professional R&D team, a quality control team, scientific production management system and comprehensive customer service system.

WINLEY holds ISO 9001:2015 quality management system certification, All products have approved by CE certification, we can also apply for UL(Authorized by partner), SASO, SONCAP, etc. according to customer requirements.

WINLEY products are sold to Europe, North & South America, Oceania, Asia and Africa, more than 100 countries and regions in the world are using WINLEY products. Products’ quality and technical service are recognized by all customers around the world, and we have cooperative distributors in some countries.

And we will continue to carry forward the integrity of compliance, scientific and technological innovation, win-win cooperation spirit, provide quality products and comprehensive service to all partners, and work hard for the development of the world’s green electrical power.