25Kva Single Phase Pad Mounted Transformer Oil-immersed 34500V To
120V MV&HV Ground-Mounted Transformer
This 25 kVA single-phase pad-mounted transformer features a
liquid-filled design for loop feed to 3-phase grids. With 34500V
primary and 120/240V secondary, it uses a 5-position tap changer
for voltage adjustment. Equipped with dead-front primary and
live-front secondary connections, plus a load break switch, it
ensures safe operation. Using biodegradable oil, it meets strict
efficiency standards (98.7%), offers weatherproof NEMA 3R housing,
and suits outdoor use up to 3300ft. Its low-loss, low-noise design
balances reliability and eco-friendliness.
Main data
| Transformer Configuration | Liquid Filled Pad Mounted |
| Transformer Feed Type | Loop Feed |
| Capacity | 25 KVA |
| Vector Group | II6 |
| Primary Voltage | 34500V |
| Secondary Voltage | 120/240 |
| Frequency | 60 Hz |
| Temperature Rise | 65°C |
| Insulation Rating | Class E Insulation - 120°C, 248°F |
| Cooling Class | KNAN; 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 or Below |
| Core Material | Grain Oriented Steel |
| Tank Material | Coated Steel |
| Efficiency | 98.90% |
Drawing
Feature
1)Two externally clamped universal high-voltage bushing wells for
loop feed operation or one externally clamped bushing well for
radial feed operation
2)Three externally clamped low-voltage bushings with threaded
copper studs, including a fully insulated neutral terminal with
removable ground strap
3)Embossed bushing mounts; Recessed oil compartment bottom
Threaded, flush mounted stainless steel lifting provisions
4)Automatic pressure relief device
5)Electrical grade mineral oil with oxidation inhibitor
6)Removable hood with corrosion resistant stainless steel hinge
pins and barrels
7)Mild steel enclosure and detachable sill fastened with stainless
steel hardware
8)Front panel accessory mounting bracket;
9)Domed top surfaces on hood and oil compartment to prevent water
retention
10)Oil fill/oil level plug; Oil drain plug; Tank grounding
provisions
11)Corrosion resistant locking assembly with captive penta-head
security bolt, floating nut and padlock provision
12)Decal or stenciled bushing designations
13)Laser engraved anodized aluminum nameplate
14)Meets or exceeds current ANSI, IEEE, NEMA, CSA, and DOE
standards as applicable
Why choose us
1. WINLEY single-phase transformer has obtained UL/cUL
certification, with a capacity of 10-333KVA and a voltage of up to
34.5KV
2. The products are designed according to multiple standards and
meet or even exceed DOE 2016, IEEE, ANSI, CSA, IEC, NEMA and other
standards.
3. The monthly delivery capacity is over 800 units, and fast
delivery can be achieved within 4 weeks.
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.
