Space-Saving Compact Design
When you're working on urban or tight-site projects, space is always a constraint-bulky transformers force you to compromise on layout. Kechang's Compact Substation Transformer is engineered with a slim, integrated structure that cuts down overall volume by 35% compared to standard substation transformers. It supports both vertical and horizontal mounting, and the lightweight housing makes it easy to maneuver even in narrow spaces like basement power rooms or urban green belt substations. You won't have to rearrange your site layout or expand installation areas to fit this transformer-its compact design solves your space crunch without sacrificing performance.
Strong Short-Circuit Withstand
Unexpected short circuits can wreck transformers and shut down your power network-costing you time and money. Our compact substation transformer uses high-conductivity copper windings, with vacuum casting (VPI) technology to ensure uniform winding arrangement. This boosts its maximum short-circuit withstand capacity significantly, so it can handle sudden current surges without internal damage. We also strictly control partial discharge (PD) levels to minimize component wear from electrical stress. No more costly transformer replacements or network downtime due to short circuits-this unit delivers the reliability you need for critical power supply.

Consistent Cooling for Non-Stop Use
Compact transformers often struggle with heat buildup because of their slim design-but we've fixed that. It comes with natural air cooling (AN) as standard, with strategically placed ventilation slots that pull heat out efficiently. For high-load scenarios, you can add forced air cooling (AF) with quiet, durable fans. The transformer switches between AN and AF automatically based on internal temperature, keeping temps steady even during long-term high-load operation. No thermal tripping, no reduced performance, and the low-noise fans only run when needed-saving energy while ensuring non-stop operation.
Dust-Proof Moisture-Resistant Build
Substation transformers often operate in dusty or humid environments, which speed up component aging. Our compact substation transformer offers protection grades up to IP44-tight seals prevent dust and moisture from entering the housing, and the corrosion-resistant casing handles high-humidity or coastal air with ease. It runs reliably in ambient temperatures from -25°C to 40°C, adapting to high-altitude areas up to 2000 meters. This weather-resistant design keeps internal components in good condition for years, reducing maintenance frequency and extending the transformer's service life to 28-30 years.

Quiet Operation for Nearby Spaces
If your transformer is installed near offices, residential areas, or hospitals, loud operating noise can lead to complaints and even operational restrictions. We've optimized this compact substation transformer with noise-reducing features: improved iron core lamination to cut magnetic hum, shock-absorbing pads to reduce vibration, and low-noise fans for AF mode. Operating noise stays between 47-56 dB, fully complying with IEC and GB noise standards. It fits seamlessly in noise-sensitive environments-no more disrupting staff, residents, or patients, and no need to add extra noise barriers.
Tailored Configs & Full Compliance
Every project has unique requirements-one-size-fits-all transformers always create headaches. Kechang lets you customize our compact substation transformer to your specs: adjust voltage levels, pick a capacity from 50kVA to 2000kVA, upgrade protection grades, tweak installation dimensions, or choose between copper busbar and cable terminal wiring. We can also adjust fan layout or add extra thermostat features if you need them. All custom units meet IEC 60076, IEEE C57, CE, UL, and RoHS standards, and comply with EU EcoDesign energy efficiency regulations. We back them with a 3-year warranty, complete quality inspection reports, and on-site technical support-so you get a transformer that fits your project perfectly, with no compliance worries.
Product Specifications
| Project | Unit | Parameter | ||
| High | Rated frequency | Hz | 50 | |
| pressure | Rated voltage | KV | 6/10/35 | |
| side | Maximum operating voltage | KV | 6.9/11.5/40.5 | |
| Rated current | A | 400/630/1250 | ||
| Transfer current | A | 1200-3150 | ||
| Rated short-circuit switch current (current-limiting fuse) | KA | 25-50 | ||
| Transformer | Rated voltage | KV | 50 | |
| Rated capacity | KVA | 30-2000 | ||
| Tap range | % | ±2*2.5/±5% | ||
| Connection group | Yyn0/Dyn11 | |||
| Impedance voltage | % | 4.4/5.6/8 | ||
| Low | Rated voltage | V | 220/380/690/800 | |
| pressure | Main circuit rated current | A | 50-4000 | |
| side | Branch current | A | 5-800 | |
| case | Protection level | IP23/IP33/IP65 | ||
| Noise level(dB) | ≤50 | |||
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