25KVA Three Phase Auto Transformer 380V/240V with F/H Class Insulation and 98% Efficiency for Industrial Power Conversion

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

25KVA three-phase automatic voltage transformer with lead wire configuration, designed for industrial power conversion from 380V to 240V. Features F/H class insulation and high efficiency operation.

Key Features
  • Higher efficiency (≥98%) due to reduced copper and iron losses
  • Compact design with reduced material requirements
  • Lower voltage change rate with smaller short-circuit impedance
  • Available in capacities up to 5000KVA
  • F/H class insulation with temperature rise ≤120K
Technical Specifications
General Parameters
TypeDry Type Autotransformer
Rated PowerUp to 5000KVA
Efficiency≥98%
Insulation ClassF/H
Impedance Voltage4%
No Load Current<4%
Input Specifications
VoltageRated Voltage ≤1000V
ConnectionDelta/Wye
Frequency50/60Hz
Phase NumberSingle/Three
Output Specifications
VoltageRated Voltage ≤1000V
ConnectionDelta/Wye
Frequency50/60Hz±5%
Phase NumberSingle/Three
Environmental & Protection
Cooling MethodNatural Convection (AN) / Forced Air (AF)
Protection DegreeIndoor IP20 (NEMA 1) / Outdoor IP54 (NEMA 3)
Ambient Temperature-10℃ to +45℃
Altitude≤1000m
Product Images
25KVA three-phase automatic voltage transformer technical diagram showing internal components and connections Industrial 25KVA three-phase voltage transformer unit with protective housing and connection terminals
Frequently Asked Questions
Can I order samples?
Yes, we welcome sample orders for quality testing. Delivery typically takes 3-7 days via DHL, UPS, or FedEx.
What is the production lead time?
Mass production requires 7-25 days depending on order quantity and customization requirements.
What warranty do you provide?
24-month warranty from bill of lading date. We provide free technical support and replacement of damaged components with photo documentation.
Do you offer OEM/ODM services?
Yes, we provide full customization including color, functions, packaging, and logo printing (MOQ: ≥10 units).
How do you ensure product quality?
All products hold CE certification with professional engineering oversight. We conduct performance testing during production and comprehensive quality checks before shipment.

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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