Residential Pad mounted Transformer Single Phase 25Kva 6.6KV To 120V Dual Windings Electric Power Distribution Transformer UL/cUL Listed

Single-phase pad-mounted transformers are compact, self-contained electrical device.It has the characteristics of small size, light weight, low noise, low loss, safety and reliability.It is widely used in residential quarters, commercial centers, hospitals, parks, schools, etc.

WINLEY’s single‑phase pad‑mounted distribution transformers are UL and cUL certified, designed to applicable ANSI, IEEE, NEMA, and DOE standards, and built for safe, reliable operation in underground electrical distribution networks.

Main data

Key Features & Drawing

• Primary: 6600 V Delta, 8.7 kV class, 95 kV BIL, dead‑front ANSI Type II terminations with 200 A load‑break elbows
• Secondary: 120/240 V (L‑N‑L), dual windings, ANSI Type II epoxy bushings and spade terminals; neutral grounded to tank
• Tap Changer: 5‑position, hot‑stick operable (±2.5% steps); front‑compartment HV location
• Protection & Switching: Bayonet expulsion and partial‑range current‑limiting fuses on primary; 4‑position load‑break switch (200 A, 8.7 kV), surge arrester included
• Construction: Grain‑oriented steel core, copper windings, coated steel tank and cabinet, low‑profile lockable lid with lifting lugs
• Enclosure & Finish: NEMA 3R weatherproof wiring compartment; bell green epoxy finish; tamper‑resistant design

Testing

• Winding Resistance Test
• Insulation Resistance Test
• Voltage Ratio Error Test
• Applied voltage withstand test
• Induced over voltage withstand test
• No-load Loss (Wattage) Test
• Load Loss (Wattage) Test
• Short-circuit Impedance
• seal test

• Lightning Impulse Test Record

• Temperature Rise Test

Specification

Production process

FAQ

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.