Product Overview
125 kva transformer is a small, three phase, oil free, fire resistant, and environmentally friendly distribution transformer with epoxy resin cast insulation. power transformer for 6.6kV/10kV/0.4kV power distribution systems, primarily used for voltage conversion, power distribution, and stable power supply. The product is compact, has low losses, low noise, requires no maintenance, and has strong short circuit withstand capability. It can operate safely for extended periods in indoor, basement, small factory, building, and computer room environments, and is widely used in industrial, construction, municipal, and overseas small power grid applications.
125 kva transformers have a wide range of applications: they can be used as step down transformers to meet various voltage conversion needs, in small transformer systems for medium capacity applications, or as three phase transformers in industrial power systems. Thanks to their reliable performance, standardized design, and mature standardized production, delivery times are short. We manufacture strictly according to multiple international and regional standards: IEC, GB, JIS, ANSI, IEEE, and UL, while also meeting energy efficiency ratings (Level 1/Level 2) and SCB series requirements. All products have passed rigorous testing and certification according to the relevant standards.
Products Description
● Resin casting as an integrated design ensures strong insulation, high mechanical strength, and good short circuit withstand.
● Flame retardant with self extinguishing properties (avoids secondary disasters).
● Environmentally robust, suitable for harsh operating environments.
● Very low maintenance requirements and low running costs.
● Low losses, high efficiency, and notable energy saving benefits.
Technical Specifications
|
Number |
technical grade |
|
Model number |
Drying type converter for drying oil |
|
Constant capacity |
125kVA (Adjustable demand system) |
|
Imported electricity (Gaogu) |
6.6kV,10kV,11kV,20kV,22kV,22.9kV,35kV(Adjustable demand system) |
|
Export electricity (low pressure) |
0.38kV,0.4kV,(Adjustable demand system) |
|
Voltage regulation range |
±5%,±2×2.5%,(Adjustable demand system) |
|
Number of phases |
Three phase(Adjustable demand system) |
|
Frequency |
50Hz/60Hz |
|
Link Group |
Dyn11,Yyn0,Yd11,Dyn5,YNd11(Adjustable demand system) |
|
Winding material |
Aluminum/Copper |
|
No load loss |
(Adjustable demand system) |
|
Load loss |
(Adjustable demand system) |
|
No load current |
(Adjustable demand system) |
|
Temperature rise limit |
100K,125K(Corresponding to F/H class insulation)(Adjustable demand system) |
|
Short circuit impedance |
(Adjustable demand system) |
|
Cooling method |
AN (natural cooling) or AF (forced air cooling) |
|
Insulation class |
Class F (Class H optional) |
|
Partial discharge |
≤5pC |
|
Implementation Standards |
IEC,GB,JIS,ANSI,IEEE,UL |
Usage scenario
● Commercial buildings – Shopping malls, office towers, hotels, and airports – indoor or outdoor installations.
● Infrastructure projects – Tunnels, ports, railways, data centers, and hospitals – safe and reliable power.
● Residential & municipal – Apartment complexes, street lighting, water treatment plants, and EV charging stations.
Oil-Immersed Transformer FAQ
1. What is a dry type transformer?
A dry type transformer uses epoxy resin or air as insulation instead of oil. It is fire safe, maintenance free, and designed for indoor installation.
2. Dry type vs oil immersed – which is better?
Dry type: safer indoors, no fire risk, zero maintenance, higher cost.
Oil immersed: better for outdoor, lower cost, needs oil testing. Choose based on your installation site.
3. Where can I install a dry type transformer?
Indoors – buildings, hospitals, data centers, factories, shopping malls. For outdoor use, add a weatherproof enclosure.
Regarding Union Power
● Global export since 2011 – Our products have reached many countries and regions.
● Your trusted partner – We provide customized transformers, OEM projects, and one‑stop power solutions.
● Wide product range – Step‑down, three‑phase, and miniature transformers to meet diverse project requirements.
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