25Kva Single Phase Pole Mounted Distribution Transformer
Oil-immersed 7.2KV To 120V UL/cUL Listed
A compact, reliable 25 kVA pole‑mount overhead distribution
transformer with a 7200V delta primary and 120/240V dual‑winding
secondary. Built with copper windings and non‑PCB mineral oil
(ONAN) cooling, it meets DOE 2016, CSA and ANSI/IEEE standards,
delivers high efficiency 99% .
WINLEY's pole-mounted transformers, UL/cUL certified, offer 10-333
kVA capacity and exceed ANSI, IEEE, CSA, IEC60076 standards. With
decades of expertise, we deliver full technical support and export
globally to North/South America and Southeast Asia. Our safe,
stable, and efficient designs cut operational costs for reliable
power solutions.
Pole Mounted Transformer Main data
| Transformer Type: | Overhead Distribution Transformer, Conventional Type |
| Transformer Configuration: | Liquid Filled Pole Mounted |
| Phase: | Single Phase |
| Capacity: | 25 KVA |
| Primary Voltage: | 7200V |
| Secondary Voltage: | 120/240V (L-N-L) |
| Secondary Phasor: | Dual Windings, Single Phase |
| Secondary BIL: | 30 KV |
| Frequency: | 60 Hz |
| Temperature Rise: | 55°C |
| Insulation Rating: | Class E Insulation - 120°C, 248°F |
| Forced Air (Fans): | None |
| Cooling Class: | ONAN; Self-Cooled |
| Efficiency Standard(s): | Meets DOE 2016 Standards, Meets CSA Standards Meets ANSI/IEEE
Standards |
| Winding Material: | Copper |
| Ambient Temperature Rating: | 40°C |
| Ambient Operating Temperature Range: | -40°C to +40°C (-50°F to +104°F) |
| Dimensions*: | 21.05''-W x 24.1''-D x 39.45''-H |
| Dry Weight*: | 198.41 lbs |
| Efficiency: | 99.05% |
| No Load Loss (in watts): | +/- 100W |
| Full Load Loss (in watts): | +/- 370W |
Technical drawings
Sinlge Phase Pole Mounted Transformer Structural Features
1. The tank lids have high-voltage porcelain bushings that come
with ring terminals, which can accommodate either aluminum or
copper cables.
2. The circular sewing structure of the tank cover ensures even
stress distribution and reliable sealing.
3. The ring bolts on the tank wall serve as the low-voltage bushing
and terminal and are tin-plated.
4. This item comes with a pressure relief valve that is capable of
self-sealing.
5. According to ANSI standards, the transformer's suspension hooks
at the top and bottom comply.
6. The ground terminal on the tank is a ring bolt ground terminal.
Pole Mounted Transformer Specifications
| 10kva-333kva Single-phase oil immersed transformer |
| Rated Cap acity(kVA) | High | Low Voltage(v) | Connection Symbol | Standard | Short-circuit impedance(%) | Efficiency |
| Voltage(v) | (%) |
| 10 | 4160
7200
12000
12470
13200
13800
19920
24940
34500 | 110
220
230
400
480 | II0,II6 | IEEE/ANSI/ DOE | 1.8-4% | 98.7 |
| 15 | 98.82 |
| 25 | 98.95 |
| 37.5 | 99.05 |
| 50 | 99.11 |
| 75 | 99.19 |
| 100 | 99.25 |
| 167 | 99.33 |
| 250 | 99.39 |
| 333 | 99.43 |
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.
