75Kva Three Phase Isolation Transformer Power Step Down Dry Type 480v 270v Copper Winding

Summarization

Engineered for demanding environments, our 75 kVA three-phase dry-type isolation transformer offers reliable voltage conversion from 480V to 270V with H-class insulation (180°C rating), delivering superior heat resistance and durability. Ideal for industrial, commercial, and mission-critical applications, this transformer combines robust isolation with advanced safety features.

Main data

Key Features & Benefits

• H-Class Insulation: Rated for 180°C, providing exceptional thermal stability and extended lifespan in high-temperature environments. Epoxy-encapsulated windings resist moisture, dust, and contaminants, ensuring reliable operation in harsh conditions.
• Electrical Isolation: Galvanic separation between 480V primary and 270V secondary circuits eliminates ground loops, suppresses electrical noise, and protects sensitive equipment from voltage surges. Complies with ANSI/IEEE standards for isolation and surge protection.
• Oil-Free Dry-Type Design: Eliminates fire hazards and environmental risks associated with liquid-filled units. Low-maintenance design reduces operational costs and meets strict safety regulations for indoor/outdoor use (NEMA 3R enclosure optional).
• Efficient Cooling: Natural air cooling (AN) ensures continuous full-load operation. Optional forced air cooling (AF) increases capacity by 30%, maintaining winding temperatures well below H-class limits for reliable performance under heavy loads.
• Precision Engineering: Copper windings and grain-oriented silicon steel core deliver ±2% voltage regulation and >95% efficiency. H-class insulation enables compact design without compromising on power density.

Drawing

Specification

Application

The three phase voltage stabilizer can be applied to large type electromechanical equipment, metal processing equipment, production line, construction device , elevator, medical equipment, equipment of light and textile industry, air-condition, TV set, household appliance and lighting used for industry, agriculture, traffic, military, railroad, scientific culture, etc, where need voltage stabilization.

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.