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25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers
Detail Information
Place of Origin:
CHINA
Certification:
UL,cUL,CE,ISO
Type:
Overhead Distribution Transformer, Conventional Type
Capacity:
25 KVA
Phase:
Single Phase
Primary Voltage:
6900V
Secondary Voltage:
120V (L-N)
Primary BIL:
75 KV
Secondary BIL:
30 KV
Cooling Class:
ONAN; Self-Cooled
Efficiency Standard(s):
Meets DOE 2016 Standards, Meets CSA Standards Meets ANSI/IEEE Standards
Temperature Rise:
65°C
Frequency:
60 Hz
Winding Material::
Copper
Delivery Time:
30days
Supply Ability:
5000set/month
Product Description

25kVA Single Phase Pole Mounted Transformer 6900V Delta To 120V ANSI/IEEE Standards


Winley Electric 25kVA single-phase pole-mounted transformer is UL/cUL certified, engineered to meet ANSI/IEEE and DOE 2016 efficiency standards for reliable overhead power distribution in North America.

This liquid-filled, conventional-type unit steps down 6900V delta primary voltage to 120V secondary power, featuring a 5-position external tap changer, ONAN self-cooling, and high-purity copper windings. Equipped with non-PCB mineral oil insulation and dedicated lightning arrester mounting provisions, it delivers durable, low-maintenance performance for residential, rural, and small commercial applications.


Production Photo

25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 0  
25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 1  

Technical drawings

25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 2

Key Feature


25kVA Compact Overhead Distribution

Single-phase pole-mounted design steps down 6900V Delta primary to 120V secondary, ideal for residential, rural, and small commercial utility networks.

Full North American Compliance

UL/cUL certified, fully meeting ANSI/IEEE and DOE 2016 efficiency standards for utility-grade safety and performance.

Robust Liquid-Filled Construction

Conventional-type overhead design with ONAN self-cooling, built to withstand harsh outdoor weather and extreme temperature conditions.

Precise External Voltage Regulation

5-position tap changer with external operating handle (2.5% tap range) for easy, on-site voltage adjustment.

Premium Copper Windings

High-purity copper windings with Ii6 vector group for low loss, high efficiency, and long-term reliability.

Flexible Installation Design

Dedicated mounting provisions for lightning arresters, compatible with both copper and aluminum conductors for simplified field installation.


Applications


This 25kVA single‑phase pole‑mounted transformer is engineered for reliable overhead power distribution in North American utility, residential, and small commercial systems. Typical applications include:
  • Rural residential neighborhoods, small housing developments, and remote home power supply
  • Agricultural operations, small farm irrigation systems, and rural electrification projects
  • Small commercial facilities, retail stores, community buildings, and street lighting systems
  • Utility overhead distribution networks and temporary power installations


Specifications


Rated Capacity
(kVA)		 High voltage
(kV)		 No Load Loss
(W)		 On load Loss
(W)		 Height
(mm)		 Depth
(mm)		 Width
(mm)		 Weight
(kg)
15 kVA 34.5/19.92
13.8/7.96
13.2/7.6
12.47/7.2
or others		 50  195  840  740  610  294 
25 kVA 80  290  840  740  610  362 
37.5 kVA 106  360  840  760  610  476 
50 kVA 135  500  840  810  610  553 
75 kVA 190  650  840  860  610  672 
100 kVA 280  1010  910  1200  965  714 
167kVA 435  1530  1000  1200  965  913 
250 kVA 550  2230  1250  1300  1430  1106 


Rigorous Quality Testing


Every WINLEY transformer undergoes a full suite of rigorous factory tests to ensure compliance with ANSI/IEEE, DOE 2016, and CSA standards, guaranteeing long-term reliability and safety:

  • Winding Resistance Test: Verifies winding integrity and material consistency
  • Insulation Resistance Test: Ensures reliable insulation performance to prevent breakdown
  • Voltage Ratio Error Test: Confirms accurate voltage transformation per design specifications
  • Applied & Induced Voltage Withstand Tests: Validates dielectric strength under overvoltage conditions
  • No-Load & Load Loss Tests: Measures iron and copper losses to meet DOE 2016 efficiency requirements
  • Short-Circuit Impedance Test: Assesses short-circuit withstand capability for grid safety
  • Seal Test: Guarantees leak-proof tank construction for outdoor operation
  • 25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 3  25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 4
  • 25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 5
  • 25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 6


Production Process


25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 7


25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 8


25kVA Single Phase Pole Mounted Transformer 6900V To 120V ANSI/IEEE Standards Oil Filled Distribution Transformers 9