UL/cUL Listed 15Kva Single Phase Pad mounted Transformer Step-Down
6600V to 120V CSA ANSI/ IEEE Standards
This is 15 kVA Single phase pad-mounted transformer features a 6600
V delta primary and 120 V secondary, Designed for pad installation
with bottom underground cable entry, it includes load‑break elbows,
a 200 A load‑break switch, a 5‑position tap changer, HV and LV
surge arresters, fused HV protection, and accessible front
compartments with padlockable doors.
The unit meets DOE/ANSI/IEEE/CSA standards, has ~98.5% efficiency,
seismic and weatherproof NEMA 3R construction, and common
maintenance features (drain/fill ports, gas sampler, analog
gauges), making it suitable for reliable distribution network
single‑phase service.
Why choose us
- UL/cUL certified single‑phase transformers: WINLEY’s single‑phase
units are UL/cUL certified, available in capacities from 10 to 333
kVA and primary voltages up to 34.5 kV.
- Standards‑driven, high‑quality design: Products are engineered to
comply with — and in many cases exceed — DOE 2016, IEEE, ANSI, CSA,
IEC, and NEMA requirements.
- Reliable supply and fast lead times: Monthly production exceeds 800
units, with expedited delivery available — typical lead time within
4 weeks.
Main data
| Transformer Type | Pad Mounted Ttransformer |
| Transformer Feed Type | Loop Feed |
| Operation | Step-Down |
| Phase | Single Phase |
| Capacity | 15 KVA |
| Vector Group | II6 |
| Primary Voltage | 6600V |
| Secondary Voltage | 120V |
| Frequency | 100 Hz ± 5 |
| Temperature Rise | 65°C |
| Insulation Rating | Class E (155°C) |
| 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) |
| Sound Level | 48 dBA |
| Elevation (Altitude) | 3300ft (1000 meters) Above Sea Level |
| Core Material | Grain Oriented Steel |
Technical drawings
This 15 kVA Single phase pad mounted transformer compartmental
liquid‑filled transformer features a sealed mineral‑oil (ONAN) tank
with separate lockable HV and LV compartments, easy maintenance and
reliable outdoor distribution performance.
Ratings
- Meets/Exceeds DOE 2016 Efficiency Ratings
- Meets/Exceeds CSA Efficiency Ratings
- Complies with ANSI / IEEE C57.12.00
- Complies with ANSI / IEEE C57 12.28
- Complies with ANSI / IEEE C57 12.29
- Complies with ANSI / IEEE C57 12.34
- Complies with ANSI / IEEE C57 12.35
- Complies with ANSI / IEEE C57.12.70
- Complies with ANSI / IEEE C57.12.110
- Complies with ANSI / IEEE C57.12.131
- Complies with ANSI / IEEE C62.11
- Complies with ANSI / IEEE C62.22
- Complies with ANSI / IEEE 386
- Complies with ANSI / IEEE C2
- Complies with ANSI / IEEE C37.47
- Complies with ANSI Z535.4
- Complies with ASTM D3487
- Complies with ASTM D6871
- Complies with NEMA 260-1996
- Complies with 10 CFR Part 431
- Complies with CSA C2.1-06
- Complies with CSA C50
- Complies with CSA C88
- Complies with CSA C88.1
- Complies with CSA C88-16
- Complies with CSA C227.4
- Complies with CSA C227.5
- Complies with CSA C802-3
- Complies with CSA C802.1
Specification
| Single phase Pad mounted Transformer Specification |
| Rating | High voltage(kV) | No Load Loss | On load Loss | Height | Depth | Width | Oil Weight(kg) | Total Weight(kg) |
| (kVA) | (mm) | (mm) | (mm) |
| 15 kVA | 34.5/19.92
13.8/8
13.2/7.6
12.47/7.2
or others | 50 | 195 | 840 | 740 | 610 | 45 | 294 |
| 25 kVA | 80 | 290 | 840 | 740 | 610 | 68 | 362 |
| 37.5 kVA | 106 | 360 | 840 | 760 | 610 | 75 | 476 |
| 50 kVA | 135 | 500 | 840 | 810 | 610 | 93 | 553 |
| 75 kVA | 190 | 650 | 840 | 860 | 610 | 132 | 672 |
| 100 kVA | 280 | 1010 | 910 | 1200 | 965 | 230 | 714 |
| 167 kVA | 435 | 1530 | 1000 | 1200 | 965 | 265 | 913 |
| 250 kVA | 550 | 2230 | 1250 | 1300 | 1430 | 325 | 1106 |
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.
