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40KVA Epoxy Three Phase Auto Transformer 240/220/200/120/115/110/100V

Basic Information
Place of Origin: CHINA
Brand Name: WINLEY
Certification: ISO,CE
Model Number: OSG-40KVA
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
Type: Epoxy Encapsulated Voltage: 240/220/200/120/115/110/100V
Material: Copper Cooling Method: Air Cooling
Vector Group: Yyno Or Others Frequency: 50/60Hz
Phase: Single Or Three Phase Coil Number: Three Windings
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40KVA Three Phase Auto Transformer


Epoxy auto transformer step up and step down


Copper Three Phase Auto Transformer

Product Description

40KVA Epoxy Three Phase Auto Transformer 240/220/200/120/115/110/100V





Winding two or more coils on a closed iron core, when one coil is connected to AC power supply (that is, the primary coil), alternating current flows through the coil, and this alternating current generates an alternating magnetic field in the iron core , The alternating main magnetic flux generates its own induced electromotive force in the primary coil, and at the same time the other coil (that is, the secondary coil) induces a mutual induction electromotive force. By changing the relationship between the primary and secondary coil turns ratio to change the primary and secondary coil terminal voltage to achieve voltage conversion, the general turns ratio is 1.5:1~2:1. Because the primary and secondary coils are directly connected, there is a risk of inter-level leakage. Therefore, it cannot be used as a light transformer.



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


40KVA Epoxy Three Phase Auto Transformer 240/220/200/120/115/110/100V 040KVA Epoxy Three Phase Auto Transformer 240/220/200/120/115/110/100V 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