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Scope of Application

BK Industrial Control Transformer is suitable for the AC circuit of 50Hz/60Hz, which is used as the control power, local lighting and indicator light power supply for general electrical apparatus in machine tools and machinery.
The Industrial Control Transformer meets the standard: JB/T9646 standard.

Model and meaning

Normal working conditions and installation conditions

The Industrial Control Transformer can work reliably under the following environmental conditions.
The altitude does not exceed 2000m.
The ambient air temperature upper limit is 40°C, and the lower limit is -5°C. (When the user needs to use it in the environment higher than 40°C or lower than -5°C, special instructions and special custom are required when ordering.)
When the max temperature is 40°C, the relative humidity of the air does not exceed 50%. At relatively low temperatures, higher relative humidity may be allowed, for example, 90% at 20°C. Special measures should be taken for the occasional condensation produced due to temperature changes.
In the ambient air, there is no no corrosive metal or harmful gas or dust that destroys insulation; In the use, Industrial Control Transformers must not be corroded by water, rain, or snow.
The power supply voltage is similar to the sine wave.

Structural features

BK Industrial Control Transformer is based on the control of transformer at home and abroad. It has further absorbed the advantages of similar products at home and abroad for many years. It is made with advanced technology and rigorous design, and optimizes the connection terminals of foreign advanced methods. Industrial Control Transformer has good performance, reliable work, low energy consumption, small volume, safe wiring and wide applicability, etc. It can work for a long time under rated load. It is an ideal variable voltage power supply.


Industrial Control Transformer Rated capacity: 25VA, 50VA, 100VA, 150VA, 200VA, 250VA, 300VA, 400VA, 500VA, 700VA, 1000VA, 1500VA, 2000VA, 3000VA, 5000VA.
Industrial Control Transformer Primary voltage: 220V, 380V or according to user requirements;
Industrial Control Transformer Secondary voltage: 6.3V, 12V, 24V, 36V, 110V, 127V, 220V, 380V or according to user requirements.
Model Primary voltage (V) Secondary voltage (V) Installation dimension
Mounting hole
Outline dimension
BK-25 220/380
or according to user needs
or according to user needs
62.5*50 5*8 80*83*82
BK-50 70*58 6*10 85*88*84
BK-100 85*64 6*10 103*93*99
BK-150 85*72 6*10 103*100*99
BK-200 85*83 6*10 103*112*99
BK-250 100*80 8*11 130*120*150
BK-300 100*84 8*11 130*125*150
BK-400 110*114 8*11 148*155*153
BK-500 110*114 8*11 148*155*153
BK-700 125*103 8*11 173*158*174
BK-1000 125*123 8*11 173*186*174
BK-1500 160*120 10*20 265*195*270
BK-2000 160*130 10*20 265*205*280
BK-3000 160*140 10*20 265*220*305
BK-4000 190*160 10*20 315*240*305
BK-5000 190*180 10*20 315*260*305
BK-6000 220*175 10*20 360*320*390
BK-7000 220*175 10*20 360*320*390
BK-10K 220*215 10*20 360*360*390
BK-15K 280*218 10*20 410*380*460
BK-20K 280*230 10*20 410*405*490
BK-25K 310*300 12.5*25 560*420*600
BK-30K 310*300 12.5*25 560*420*600
BK-40K 310*300 12.5*25 570*460*660
BK-50K 310*310 12.5*25 610*460*630
BK-60K 310*310 12.5*25 640*480*630
BK-80K 420*330 12.5*25 670*500*690
BK-100K 420*350 12.5*25 730*520*750

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