112.5 kVA Three Phase Pad Mounted Transformer
This is a 112.5 kVA three phase pad mounted transformer built to ANSI/IEEE standards. It’s oil-filled, ground-mounted, and comes in a lockable steel enclosure — the kind of setup you’d see outside a small commercial building, a community facility, or a light industrial site. Primary voltage goes from 2.4 kV up to 34.5 kV. Secondary voltage is configurable. We build and test these in-house — each unit goes through routine inspection before it ships.
Power Rating
112.5 kVA
Phase
Three Phase
Primary Voltage
2.4–34.5 kV
Secondary Voltage
208Y/120V–480V
Standard
ANSI/IEEE
Cooling
ONAN
Certification
CE Certified
What Is a 112.5 kVA Pad Mounted Transformer?
A pad mounted transformer sits on a concrete pad at ground level. It takes medium-voltage power from the utility — usually somewhere between 2.4 kV and 34.5 kV — and steps it down to a lower voltage that buildings and equipment can actually use.
The 112.5 kVA version is on the smaller end of three-phase pad mounted transformers. That’s not a weakness — it just means it’s sized for projects where the load demand is moderate and you don’t need more capacity than the job actually calls for. The steel enclosure locks shut, so there are no exposed live parts. That matters when the unit is going into a publicly accessible location.
Inside, it uses a cold-rolled silicon steel core and copper windings. The mineral oil handles both insulation and cooling. No external ventilation needed, which makes installation simpler.
A Few Things Worth Knowing
Enclosure Standard
ANSI/IEEE C57.12.28
This transformer meets ANSI/IEEE C57.12.28 for enclosure integrity — the standard that covers pad-mounted equipment in public areas. Dead-front design means the cable connections are fully enclosed. If your project is going somewhere people might walk past or access, that’s the spec you want. It’s also why this compact pad mounted transformer works for outdoor installation without needing a separate fence or enclosure around it.
Voltage Configuration
2.4 kV – 34.5 kV primary
Primary voltage can be set anywhere from 2.4 kV to 34.5 kV to match your local grid. Secondary output — 208Y/120V, 240V, 480V, or something else — can be adjusted to what the project needs. Tap changer positions and connection type (Dyn11, YNyn0, others) are also adjustable. If you’re not sure what combination you need, share the grid voltage and we can work through it.
Routine Testing
Every unit before shipment
Before each transformer leaves the factory, it goes through routine testing — transformation ratio check, insulation resistance measurement, and no-load loss testing. Not every manufacturer does this as standard. For us it’s part of the production process, not an optional add-on.
Documentation
CE · ISO 9001:2015
We hold CE certification and ISO 9001:2015 accreditation. If your project needs documentation for customs clearance or compliance review, we can put together what’s required. As a 112.5 kVA pad mounted transformer manufacturer with export experience, this is something we handle regularly.
Typical Application
Small commercial · Community facilities
The 112.5 kVA pad mounted transformer is a good fit for small commercial buildings, community facilities, and light service connections — places that need three-phase supply but aren’t running heavy industrial loads. It’s the entry point of the three-phase pad mounted range. If your project has room to grow or the load is already pushing higher, the 150 kVA or 225 kVA three phase pad mounted transformer gives you more headroom without a big jump in footprint or cost.
What Projects Is This Sized For?
The 112.5 kVA pad mounted transformer is a good fit for small commercial buildings, community facilities, and light service connections — places that need three-phase supply but aren’t running heavy industrial loads. It’s the entry point of the three-phase pad mounted range. If your project has room to grow or the load is already pushing higher, the 150 kVA or 225 kVA three phase pad mounted transformer gives you more headroom without a big jump in footprint or cost.
112.5 kVA Pad Mounted Transformer Specifications
| Parameter | Standard Value | Custom Available |
| Rated Power | 112.5 kVA | — |
| Phase | Three Phase | — |
| Primary Voltage | 2.4–34.5 kV | Custom |
| Secondary Voltage | 208Y/120V, 240V, 480V | Custom |
| Frequency | 60 Hz | 50 Hz available |
| Connection Type | Dyn11, YNyn0 | Custom |
| Cooling Method | ONAN (Mineral Oil) | Vegetable Oil |
| Temperature Rise | 65°C | 55°C available |
| Insulation Class | Class A | — |
| Enclosure Type | Pad Mounted, Dead-Front | — |
| Enclosure Standard | ANSI/IEEE C57.12.28 | — |
| Transformer Standard | ANSI/IEEE C57.12.00/34 | IEC 60076 |
| Winding Material | Copper | Aluminum |
| Core Material | Cold-rolled Silicon Steel | — |
| Impedance Voltage | 3.10% – 5.75% | Custom |
| Certifications | CE, ISO 9001:2015 | GOST available |
Need something different? Most parameters above can be adjusted for specific projects. Send us your voltage requirements and we’ll confirm what’s possible.
Frequently Asked Questions
What is a 112.5 kVA three phase pad mounted transformer used for?
It steps down medium-voltage utility power to a usable low voltage — typically for small commercial buildings, residential developments, schools, clinics, or light industrial connections. It’s one of the more common entry-level capacities for projects that need three-phase outdoor distribution without going into heavy industrial territory.
Is 112.5 kVA enough for a small commercial building?
For most small commercial buildings with moderate loads — retail units, small offices, mixed-use spaces — yes, it’s a workable size. Where it starts to fall short is when you have heavy HVAC, large motors, or expect the load to grow significantly. In that case, 150 kVA or 225 kVA is worth looking at. If you send us a rough load list, we can give you a straight answer.
What primary and secondary voltage options are available?
Primary voltage runs from 2.4 kV to 34.5 kV — covers most utility grid voltages in North America and other markets. Standard secondary voltages are 208Y/120V, 240V, and 480V. Other combinations are possible. Just let us know what your grid supplies and what voltage you need at the output end.
Can the transformer be customized?
Yes. Options include primary and secondary voltage, tap range, connection type (Dyn11, YNyn0, and others), winding material (copper or aluminum), oil type (mineral or vegetable), enclosure color, and nameplate language. Single units and project quantities are both fine.
What standards does this transformer meet?
Manufactured to ANSI/IEEE C57.12.00 and C57.12.34 for three-phase pad mounted distribution transformers. The enclosure meets ANSI/IEEE C57.12.28. We can also produce to IEC 60076 if your project is outside North America. CE documentation is available.
How do I get a quote from a pad mounted transformer supplier in China?
We keep the process straightforward. Send us the rated capacity (112.5 kVA), primary and secondary voltage, quantity, installation country, and any standard or certification requirements. We’ll respond within 24 hours with a configuration and price. No complicated forms — just the basics to get started.
