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300 Kva Three Phase Pad Mounted Transformer Oil Immersed Step Down 12470V To 480V ANSI IEEE

Basic Information
Place of Origin: CHINA
Brand Name: WINLEY
Certification: CE,ISO
Model Number: S-300/15
Minimum Order Quantity: 1unit
Price: $5000-$150000
Packaging Details: Plywood case
Delivery Time: 30days
Payment Terms: T/T
Supply Ability: 1000set/month
Detail Information
Phase: 3 Phase Capacity: 3000KVA Or Customized
Primary Voltage: 12470V Secondary Voltage: 480Y/277
Frequency: 60 Hz Cooling Class: KNAN/ONAN
Winding Material: Copper Efficiency: 99.10%
High Light:

300 Kva Three Phase Transformer


300 Kva Pad Mounted Transformer


480V Oil Type Transformer

Product Description

300 Kva Three Phase Pad Mounted Transformer Oil Immersed Step-Down 12470V To 480V ANSI IEEE



  • 300 Kva Three Phase Pad Mounted Transformer Oil Immersed Step Down 12470V To 480V ANSI IEEE 0
  • Primary Voltage Ratings: 34.5-19.92/13.8-7.957/13.2-7.62/12.47-7.2 or others
  • Secondary Voltage Ratings: 208GrdY/120;416GrdY/240,480GrdY/277,/600GrdY/347,220y/127,480V,415v,600v or others
  • H.V. TAP RANGE: ±2×2.5% or others
  • CONNECTION TYPE: Dyn11/YNyn0 or others
  • TYPE: Loop feed/Radial feed
  • BIL: 30-150kV
  • Standards: ANSI/IEEE, CSA, DOE
  • Application: Construction, BESS, Bitcoin mining, Industry, Renewable energy, EV charging, Utility
  • Power Rating: 300 kVA

Main data


Transformer Type Pad Mounted, Compartmental-Type
Transformer Configuration Liquid Filled Pad Mounted
Transformer Feed Type Loop Feed
Phase Three Phase
Capacity 300 KVA
Vector Group YnYn0
Primary Voltage 12470GrdY/7200
Primary Voltage Class 15 kV Class
Primary Phasor Grounded Wye
Primary BIL 95 KV
Secondary Voltage 480Y/277
Secondary Voltage Class 1.2 kV Class
Secondary Phasor Wye-N
Secondary BIL 30 KV
Frequency 60 Hz
Temperature Rise 65°C
Insulation Rating Class E Insulation - 120°C, 248°F
Cooling Class KNAN; Self-Cooled
Impedance (Typical) 1.2-6.0% Typical
Primary Connection Type Dead Front
Winding Material Copper
Ambient Temperature Rating 40°C
Sound Level 55 dBA
Total Weight (Liquid Filled)* 3,637 lb
Efficiency % 99.00%
No Load Loss (in watts) +/- 500W
Full Load Loss (in watts) at 100% +/- 3,000W
Total Load Loss (in watts) at 100% +/- 3,500W


Standard Features


1)The transformer part and the control cabinet part of the United States variation, of which the transformer part is a fully sealed structure, and the insulating oil can be two types of high ignition point oil or ordinary oil.
2)The control cabinet is divided into a high-voltage room and a low-voltage room.
3)The high-voltage room is equipped with: high-voltage cable plug, lightning arrester, load switch operating handle, non-excitation tap switch handle, plug-in fuse, pressure release valve, thermometer, pressure gauge, oil Position gauges, oil filling plugs, oil drain valves, etc., load switches, off-excitation tap changers, plug-in fuses, etc. are all immersed in transformer oil together with the transformer core. The high-voltage cable and the transformer are connected by elbow cable connectors.
4)The low-voltage side can be installed with air circuit breakers, current transformers, as well as electric energy meters, ammeters and voltmeters, and output circuits and capacitance compensation devices can be configured according to user needs.


Technical drawings

150KVA Three Phase Pad Mount electrical  Transformer Oil Immersed 13.8KV 3




Rated Capacity Loss(w) Dimension(mm) Weight(kg)
No-load Loss(W) On-load Loss W D H Oil Weight (L) Total Weight (KG)
45kVA 160 1000 1730 990 1270 416 950
75kVA 180 1250 1730 990 1270 435 1020
150kVA 280 2200 1730 1245 1270 473 1225
300kVA 480 3650 1830 1295 1270 605 1655
500kVA 680 5100 2260 1345 1270 720 2110
750kVA 980 7500 2260 1448 1628 1022 2950
1000kVA 1150 10300 2260 1500 1625 1325 3720
1500kVA 1640 14500 2210 1470 2150 1552 4672
2000kVA 2160 20645 2380 1600 2220 1855 5670
2500kVA 2680 27786 3070 1650 2330 2006 6580
3000kVA 3300 30300 3260 1850 2460 2336 7500
3750kVA 4125 37875 4080 2060 2680 2650 8450


Factory photos


300 Kva Three Phase Pad Mounted Transformer Oil Immersed Step Down 12470V To 480V ANSI IEEE 2


Production process


150KVA Three Phase Pad Mount electrical  Transformer Oil Immersed 13.8KV 4

150KVA Three Phase Pad Mount electrical  Transformer Oil Immersed 13.8KV 5

150KVA Three Phase Pad Mount electrical  Transformer Oil Immersed 13.8KV 6




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: Mass production time 15-25 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.

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