20KVA Three Phase Step Down Power Transformer 480V to 220V/208V/120V/110V with 98% Efficiency and IP54 Protection

Price Negotiable
Price: $20-$8000
MOQ: 1unit
Delivery Time: 10-15days
Brand: WINLEY
Product Description
Product Overview

This 20KVA three-phase step-down autotransformer efficiently converts 480V input to various output voltages including 220V, 208V, 120V, and 110V. Designed with a single-winding configuration, it offers superior efficiency exceeding 98% and compact design compared to conventional transformers.

Key Features
  • High efficiency rating ≥98% for reduced energy consumption
  • Compact design with smaller footprint than conventional transformers
  • Single-winding autotransformer configuration
  • Available in both aluminum and copper winding materials
  • Natural convection (AN) or forced air (AF) cooling options
  • IP20 (NEMA 1) indoor or IP54 (NEMA 3) outdoor protection
Technical Specifications
General Parameters
Rated PowerUp to 5000KVA
TypeDry Type Autotransformer
Efficiency≥98%
Impedance Voltage4%
No Load Current<4%
Insulation ClassF/H
Coil Temperature Rise≤120K
Input Characteristics
VoltageRated Voltage ≤ 1000V
ConnectionDelta/Wye
Frequency50/60Hz
Phase NumberSingle/Three
Output Characteristics
VoltageRated Voltage ≤ 1000V
ConnectionDelta/Wye
Frequency50/60Hz±5%
Environmental & Protection
Ambient Temperature-10℃ to +45℃
Relative Humidity≤95% (non-condensing)
Altitude≤1000m
Protection DegreeIndoor IP20 (NEMA 1) | Outdoor IP54 (NEMA 3)
Product Images
20KVA three phase step down autotransformer technical diagram and internal construction Industrial 20KVA power transformer unit with electrical connections and mounting
Frequently Asked Questions
Can I order samples for testing?
Yes, we welcome sample orders to test and verify product quality. Sample lead time is 3-7 days with shipping via DHL, UPS, or FedEx.
What is your production lead time?
Mass production typically requires 7-25 days depending on order quantity and customization requirements.
Do you offer warranty and technical support?
We provide 24-month warranty from bill of lading date. Technical support and replacement of damaged accessories are available with proper documentation.
Are OEM/ODM services available?
Yes, we offer comprehensive OEM/ODM services including custom colors, functions, packaging, and logo printing (MOQ: ≥10 pieces).
How do you ensure product quality?
All products hold CE certification and undergo rigorous quality control including performance testing during production and comprehensive final inspection.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Xiamen Winley Electric Co.,Ltd
Location No. 99 Yilan Road,Siming,Xiamen,Fujian,China
Contact Person Steven

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