Auto Starter Transformers | AT Range

Auto starter transformers for Korndorffer method of starting to BS4941 (EN 609470) for use on 50/60Hz supply.

Normal input voltage 380-415v with tappings of 50%, 65% and 80%. Rated for 15 starts per hour. Other voltages and tappings are available.

Auto Starter TransformerAuto Starter Transformer for reduced voltage starting of motors
StandardBS4941, BSEN60947
Input VoltagesUp to 1000V AC
Voltage Taps50%, 65%, 80% as standard - other taps available
Frequency50/60Hz
Insulation ClassF
Insulation Resistance> 5 Meg Ω
Dielectric StrengthWinding to Earth > 2.5kV
Ambient Temperature40
Duty Cycle15 Starts per hour
Auto Starter Transformer Manufacturers UK
Part No. kW A B C D E kg
AT1 15.0 240 120 220 170 80 14
AT2 18.5 240 130 220 170 90 18
AT3 22.0 300 140 300 220 100 28
AT4 30.0 300 150 300 220 110 33
AT5 37.0 300 160 300 220 120 39
AT6 45.0 300 170 300 220 130 44
AT7 55.0 360 200 360 320 100 48
AT8 75.0 360 210 360 320 110 56
AT9 90.0 360 220 360 320 120 64
AT10 110.0 420 240 420 380 130 75
AT11 132.0 420 250 420 380 140 86
AT12 160.0 420 260 420 380 150 96
AT13 200.0 480 300 500 440 160 120
AT14 260.0 480 320 500 440 180 150
AT15 300.0 480 330 500 440 190 170
AT16 340.0 480 340 500 440 200 190
AT17 400.0 600 300 600 540 185 220
AT18 450.0 600 340 600 540 205 270
AT19 550.0 600 340 600 540 225 320

Purchasing

Boardman Transformers' core range of products are available to purchase through many of the leading UK and international distributors and we are always happy to provide details of where our transformers may be bought.

Should your requirements be of a more specialist or bespoke nature, we ask that you contact us directly to speak to a member of our team.

Download Product Specification