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25KVA Step Up Three Phase Auto Transformer Motor 100V/95V/90V/80V

Basic Information
Place of Origin: CHINA
Brand Name: WINLEY
Certification: ISO,CE
Model Number: OSG-25KVA
Minimum Order Quantity: 1unit
Price: $20-$8000
Packaging Details: Plywood case
Delivery Time: 10-15days
Payment Terms: T/T
Supply Ability: 1000units/month
Detail Information
Usage: Motor Voltage: 100V/95V/90V/80V
Coil Structure: Toroidal Coil Number: 2 Or 3 Windings
Type: Step Up Material: Copper Or Aluminum
Cooling Method: Air Cooling Frequency: 50Hz Or 60Hz
High Light:

25KVA Three Phase Auto Transformer


Step Up Auto Transformer 100V 90V


Three Phase Auto Transformer 100V 95V

Product Description

25KVA Step Up Three Phase Auto Transformer Motor 100V/95V/90V/80V





Three-phase autotransformer is a kind of autotransformer, it can have the same connection group as the three-phase transformer, but there is electrical connection between the different coils. Mainly used in high-power transmission and transformation occasions.


Autotransformer is a single-turn transformer. The primary and secondary sides share a winding winding, and its transformation ratio is fixed. Compared with the general transformer of the same capacity, it has the advantages of simple structure, material saving, and small size. It is especially economical when the transformation ratio is close to 1. Therefore, it is used more in high-power transmission transformers with similar voltages. In addition, it is widely used in step-down starter boxes for asynchronous motors above 10kW.



Type Dry Type
  Vacuum Pressure Impregnation
Rated Power Upto 5000KVA
Input Voltage Rated Voltage ≤ 1000V
  Current Rated power/ Input Voltage / 1.732
  Tap None/Customizable
  Connection Delta/Wye
  Frequency 50/60Hz
  Phase Number Single/Three
Output Voltage Rated Voltage ≤ 1000V
  Current Rated power/ Output Voltage / 1.732
  Tap None/Customizable
  Connection Delta/Wye
  Frequency 50/60Hz±5%
  Phase Number Single/Three
Vector Group Yyn0/Dyn11
Impedance Voltage 4%
Efficiency ≥98%
Duty Cycle 100% Continuous
Winding Material Aluminum/Copper
No Load Current <4%
Display Analog Voltmeter
Insulation Class F/H
Insulation Resistance ≥10MΩ
Withstand Voltage 2500V, 1 Minute, No Flashover and Damage
Coil Temperature Rise ≤120K
Cooling Method

Natural Convection (AN)

Forced Air (AF)

Working Environment Ambient Temperature: -10℃ to +45℃
  Relative Humidity: ≤95% (non-condensing)
  Altitude: ≤1000m
Reference Dimensions Customizable
Protection Degree Indoor IP20 (NEMA 1) Outdoor IP54 (NEMA 3)
Standards In Accordance with IEC and EN


25KVA Step Up Three Phase Auto Transformer Motor 100V/95V/90V/80V 025KVA Step Up Three Phase Auto Transformer Motor 100V/95V/90V/80V 1




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: Sample time 3-7 days, we usually ship by DHL, UPS, FedEx,etc. Mass production time 7-25 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(MOQ:≥10pcs).

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.

Contact Details

Phone Number : 86-18650108051

WhatsApp : +8618650108051