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1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer
Detail Information
Place of Origin:
CHINA
Certification:
UL/cUL, CE, ISO
Type:
Vacuum Pressure Impregnated Transformer
Insulation Class:
Class R 220℃
Temperature Rise:
150℃
Capacity:
1500KVA
Primary Voltage:
4160
Secondary Voltage:
480Y/277
Cooling:
AN/AF
Efficiency:
Up To 99%
Delivery Time:
10-15days
Supply Ability:
1000units/month
Highlight:

1500kVA dry type transformer

,

4160V to 480V distribution transformer

,

Class R medium voltage transformer

Product Description

1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer



Compared to standard dry-type transformers, WINLEY Electric’s vacuum-impregnated dry-type transformers with R-class insulation adopt the NOMEX® insulation system, offering higher thermal endurance, improved insulation life, and better suitability for continuous high-load applications where reliability and safety margins are critical.


Product Photos


1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer 0


1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer 1


1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer 2


1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer 3

     

Insulation class classification


Dry-type transformers are built to recognized standards such asIEEE C57.12.01, IEEE C57.12.91, and CSA C9. The most common insulation classes are summarized below:


Insulation Class Maximum allowable
temperature rise (°C)		 environmental
temperature (°C)		 Maximum
Temperature (°C)		 Common Insulation Materials
Class A 50 40 105 Cotton, Paper, Silk, Wood
Class B 80 40 130 Mica, Fiberglass, Asbestos, etc., with suitable bonding substances
Class F 105 40 155 plus materials like synthetic enamelsB
Class H 125 40 180 Silicone elastomers, Mica, Fiberglass with high-temperature bonding substances
Class R 150 40 220 Very high-temperature resistant materials, often proprietary


VPI Transformer R-class insulation process


1. Made of Class C Dupont insulation materials with big running temperature rise margin, strong overload capacity, high fire resistance, good thermal stability, and long service life.
2. Adopted vacuum pressure impregnation Class C with UL insulating paint to ensure moisture-proof, dust-proof, anti-contamination and low partial discharge.
3. With a high-quality core made of silicon steel sheet and high-quality oxygen-free copper wire to reduce the effective operation loss and improve efficiency.
4.The high-voltage winding has a continuous structure to provide high mechanical strength and good radiation capability.
5.The low-voltage foi is presoaked in epoxy resin for layer insulation and soaked through vacuum pressure impregnating equipment and a high-temperature curing machine.


1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer 4



Technical drawings


1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer 5


Application Areas:


1.New Energy & Energy Storage SystemsPhotovoltaic and wind power generation, energy storage power stations, PCS, and inverter supporting transformers.
2.High‑Temperature Industrial EnvironmentsMetallurgy, steel rolling, petrochemical, mining, and tunnel engineering with heavy load and high ambient temperature.
3.Data Centers & High-Reliability InfrastructureIDC data centers, high-rise buildings, subways, and rail transit requiring high fire safety and long-term stable operation.


Specification 


Model
(kva)		 Primary Voltage Secondary Voltage Coupling group tab Shape dimension Mounting dimension
K*J The box dimension
Bmax Dmax±5 Emax A C±5 Bmax Dmax±5 Emax
SG-10KVA 660
400
380
200		 380
220
110
36		 Yyn0
Y/d
D/y
D/d		 360 180 305 215 140 10*20 450 360 480
SG-15KVA 360 200 335 215 155 10*20 450 360 480
SG-20KVA 420 210 350 250 170 10*20 490 400 540
SG-30KVA 420 230 380 250 190 10*20 490 400 540
SG-50KVA 680 350 550 420 220 10*20 800 510 840
SG-80KVA 750 400 620 480 250 10*20 850 510 840
SG-100KVA 780 420 650 500 250 10*20 900 550 890
SG-300KVA 180 95 185 100 75 6*14


SG-500KVA 180 95 185 100 75 6*14


SG-1000KVA 180 110 185 100 90 6*14


SG-2000KVA 230 125 205 130 100 9*16


SG-3000KVA 240 145 215 130 120 9*16


SG-4000KVA 240 155 235 130 130 9*16


SG-5000KVA 320 160 255 180 115 10*20 400 330 480
SG-6000KVA 300 165 280 180 140 10*20 400 330 480


Production process
 

1500kVA VPI Transformer Medium Voltage 4160V To 480V Class R 220 °C Insulation Dry Type Distribution Transformer 6