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300KVA Three Phase Dry Type Transformer

Basic Information
Place of Origin: CHINA
Brand Name: WINLEY
Certification: ISO,CE
Model Number: SG-300KVA
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
Primary Voltage: 480Y/277V Output Voltage: 220Y/127V
Enclosure: NEMA 3R Overload Capacity: >125%
Silicon Steel: Low Losses Temperature Rise: <150℃
Insulation: 220℃ Cooling: AN/AF
High Light:

300KVA Three Phase Dry Type Transformer


3 phase auto transformer 220Y 127V


Three Phase Dry Type Transformer 480Y 277V

Product Description

300KVA NEMA 3R Three Phase Dry Type Transformer 480Y/277V 220Y/127V



1. Feature


■ Energy saving and low noise

The use of high-quality cold-rolled silicon steel sheet stacking.The use of a special dipping process to effectively reduce the vibration and noise during operation,and the introduction of new processes and new technologies such as the design of high-temperature-resistant insulating materials, making the transformer more energy-saving and quieter . The energy-saving and low-noise coil has a ventilation slot, and the air flows smoothly, effectively reducing the temperature of the coil.




Product Name Three phase dry type transformer
Product Model SG-300KVA
Winding Material Enameled copper wire
Capacity 300KVA
Input Voltage 480Y/277V
Output Voltage 220Y/127V
Frequency 50/60Hz
Connection Type DYN1
Insulation Level F/H
Enclosures Protection Level IP54
Pressure-tight Test 3500V/min
Insulation Resistance >100MΩ
Ground Resistance 25A<100milliohm
Induction Withstand Voltage Test 125Hz / 830V / 60s
Cooling Method Natural or air cooling
Temperature Rise ≤115K
Transformation Ratio <3%
Air Carrying Current <3%
Impedance Voltage about 4.5%
Total Losses 4%
Efficiency 80%--99%
Operating Temperature -15℃~40℃ (40℃, 90%R.H., 56days)
Storage Temperature -25℃~100℃(40℃, 90%R.H., 56days)
Certificate CE,ISO
The technical parameter for reference only, for exactly technical information, please feel free to contact us!


300KVA Three Phase Dry Type Transformer 0



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