Mingri Electric
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| No. | Description |
|---|---|
| 1 | Single-phase |
| 2 | Control transformer |
| 3 | Rated capacity (VA) |
| Parameter | Unit | Value |
|---|---|---|
| Input Voltage | V | 110 / 220 / 380 / 400 / 660 (others customizable) |
| Output Voltage | V | 6 / 12 / 24 / 36 / 48 / 110 / 127 / 220 / 380 (others customizable) |
| Voltage Accuracy | % | ±1 |
| Waveform Distortion | - | None (compared to input) |
| Voltage Regulation | % | <1.5 |
| Insulation Class | - | Class F (High Temperature Resistant) |
| Insulation Resistance | MΩ | >150 |
| Efficiency | % | Induction type 99.7%, Isolation type 95% |
| Dielectric Strength | VAC (1min) | 3000 |
| Overload Capacity | - | Up to 1.2 times rated load |
| Design Life | years | 20 |
| Noise | dB | <35 (within 1 meter) |
| Cooling Method | - | Dry-type Air Cooling |
| Temperature Rise | °C | <60 |
| Connection Method | - | Y, YynO, D, yll, D, dO |
| Model | External Dimensions (mm) | Installation Dimensions (mm) | |||
|---|---|---|---|---|---|
| Bmax | Dmax | Emax | K | J | |
| BK-50VA | 85 | 80 | 92 | 65 | 60 |
| BK-100VA | 103 | 90 | 110 | 75 | 64 |
| BK-150VA | 103 | 98 | 110 | 75 | 74 |
| BK-200VA | 103 | 105 | 110 | 75 | 77 |
| BK-250VA | 114 | 122 | 125 | 90 | 90 |
| BK-300VA | 114 | 127 | 125 | 90 | 95 |
| BK-400VA | 132 | 130 | 142 | 94 | 97 |
| BK-500VA | 132 | 135 | 142 | 94 | 102 |
| BK-700VA | 150 | 140 | 175 | 127 | 115 |
| BK-1000VA | 150 | 155 | 175 | 127 | 130 |
| BK-1500VA | 171 | 175 | 190 | 130 | 150 |
| BK-2000VA | 171 | 195 | 190 | 130 | 170 |
The BK Series Control Transformer is widely used as a control power supply for mechanical equipment, electrical appliances, and machine tools, as well as for local lighting and indicator power sources in AC circuits up to 50–60 Hz.
Yes. While standard configurations are available (e.g., 110V, 220V, 380V, 400V, 660V inputs), custom voltage specifications can be designed and manufactured to meet your specific electrical requirements.
Class F insulation is highly temperature-resistant, allowing the transformer to withstand higher thermal loads safely. This ensures stable performance, prevents degradation under continuous load, and significantly extends the product's operational lifespan.
The dry-type air cooling method relies on natural air convection to dissipate heat. It eliminates the need for liquid coolants, making the transformer clean, highly reliable, and virtually maintenance-free throughout its service life.
Thanks to its advanced design, high-quality materials, and robust construction, the BK Series Control Transformer features a long design life of up to 20 years under standard operating conditions.
