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UN Series - Single Phase Transformers
UN transformers deliver 25-200 kVA with fully custom secondary voltages for heavy industrial and utility applications.
Model Number Breakdown
Key Features
- Large 25-200 kVA capacity for heavy industrial loads
- Fully custom secondary voltages and taps
- Single-phase and three-phase configurations
- Robust for continuous industrial duty
Applications
- Industrial power systems
- Commercial buildings
- Infrastructure projects
TECHNICAL DRAWING
Model: UN-100KVA | Type: Oil-immersed transformer | Capacity: 100 kVA
FRONT ELEVATION
ELECTRICAL SCHEMATIC
EFFICIENCY vs LOAD
SIDE VIEW
TOP VIEW
TERMINAL BLOCK
CORE & WINDING
LEGEND:
Specifications Range
All specifications and dimensions can be customized upon request
Model Selector
| Key parameters | Model Range |
|---|---|
| Capacity | 25–200 VA |
| Input voltage | 380V |
| Output voltage | Custom |
| Frequency (Hz) | 50/60 |
| Efficiency | ≥85%, ≥90% |
| Allowed temperature rise | ≤65 K |
| Short-circuit impedance | ≤8% |
| Insulation class | Class B (130°C) |
| Compare | Model | Series | Capacity (kVA) | Input voltage | Output voltage | Frequency (Hz) | Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|
| UN-25KVA | UN | 25kVA | 380V | Custom | 50/60 | 290 kg | 78×84×90 mm | |
| UN-50KVA | UN | 50kVA | 380V | Custom | 50/60 | 470 kg | 78×94×90 mm | |
| UN-75KVA | UN | 75kVA | 380V | Custom | 50/60 | 635 kg | 950×700×1225 mm | |
| UN-100KVA | UN | 100kVA | 380V | Custom | 50/60 | 800 kg | 112×94×115 mm | |
| UN-150KVA | UN | 150kVA | 380V | Custom | 50/60 | 1060 kg | 112×102×115 mm | |
| UN-200KVA | UN | 200kVA | 380V | Custom | 50/60 | 1300 kg | 112×110×115 mm |
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Certification
The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.
Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ
Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.
Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.
Read-only: no price factor, not part of the sum — the loss-grade cost is already carried by the efficiency (subtype) base price, so charging here would double-bill. Values come from the product library type-test data, interpolated between published capacities; grades the library does not cover show an em dash, never zero.
Reference prices are for estimation only and do not constitute a formal offer.
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