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DK Series - Single-Phase Control Transformers
The DK series single-phase control transformers provide stable voltage output for industrial control circuits, signal lighting, and auxiliary power supply applications. Compact design with high reliability.
Model Number Breakdown
Key Features
- Single-phase 220V/380V input
- Stable output voltage for control circuits
- Compact and lightweight design
- High efficiency and low noise
Applications
- Machine tool control circuits
- Signal lighting systems
- Auxiliary power supply
- Industrial automation
TECHNICAL DRAWING
Model: DK-400VA | Type: Oil-immersed transformer | Capacity: 400 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 | 25–3000 VA |
| Input voltage | ≤1000V |
| Output voltage | Custom |
| Frequency (Hz) | 50/60 |
| Efficiency | ≥85%, ≥90%, ≥93% |
| 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 |
|---|---|---|---|---|---|---|---|---|
| DK-25VA | DK | 25VA | ≤1000V | Custom | 50/60 | 110 kg | 78×84×90 mm | |
| DK-50VA | DK | 50VA | ≤1000V | Custom | 50/60 | 130 kg | 78×94×90 mm | |
| DK-100VA | DK | 100VA | ≤1000V | Custom | 50/60 | 130 kg | 112×94×115 mm | |
| DK-150VA | DK | 150VA | ≤1000V | Custom | 50/60 | 130 kg | 112×102×115 mm | |
| DK-200VA | DK | 200VA | ≤1000V | Custom | 50/60 | 130 kg | 112×110×115 mm | |
| DK-250VA | DK | 250VA | ≤1000V | Custom | 50/60 | 130 kg | 112×115×115 mm | |
| DK-300VA | DK | 300VA | ≤1000V | Custom | 50/60 | 130 kg | 112×120×115 mm | |
| DK-400VA | DK | 400VA | ≤1000V | Custom | 50/60 | 130 kg | 140×127×140 mm | |
| DK-500VA | DK | 500VA | ≤1000V | Custom | 50/60 | 130 kg | 140×132×140 mm | |
| DK-700VA | DK | 700VA | ≤1000V | Custom | 50/60 | 130 kg | 140×137×140 mm | |
| DK-1000VA | DK | 1000VA | ≤1000V | Custom | 50/60 | 130 kg | 170×170×165 mm | |
| DK-1500VA | DK | 1500VA | ≤1000V | Custom | 50/60 | 130 kg | 170×180×165 mm | |
| DK-2000VA | DK | 2000VA | ≤1000V | Custom | 50/60 | 130 kg | 200×185×200 mm | |
| DK-2500VA | DK | 2500VA | ≤1000V | Custom | 50/60 | 130 kg | 200×195×200 mm | |
| DK-3000VA | DK | 3000VA | ≤1000V | Custom | 50/60 | 130 kg | 200×205×200 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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