Three-phase automatically transformers (variac transformers) with a range of output voltage control from 0 to 430 Volts with an LCD display. Specifications:   Rated power, VA 3000     Maximum current, A 4     Operating input voltage range, V 0-380     Nom. output voltage range, V 0-430     Output voltage error,% less than 1%     Warranty 2 years     Distortion sine wave missing     Connection option terminals (connection kit)     Operating range t ° C -5 - +50     Cooling passive     Network Connection Method terminals     Housing metal     Overall dimensions h-v-cm 18х25х37     Weight, kg. 22   Three-phase Variac transformer SUNTEK is a powerful and reliable device that is indispensable in production, in workshops and factories. Meter scale and digital voltmeter contribute to the simplicity and ease of operation. The metal case protects the autotransformer from mechanical damage. The main difference between laboratory autotransformers and conventional ones is that the mobile contact in the winding allows changing the number of turns included in the circuit and thus makes it possible to set the voltage in a wide range, for example, in a single-phase network – from 0 to 300 V, in a three-phase – from 0 to 430 V. the change in The number of turns occurs smoothly, so it is possible to obtain the most accurate voltage values and a pure sine wave at the output. In addition, this device is lighter and more compact than analogues made according to the traditional scheme, and has a much greater efficiency (up to 98%). To control the operation of the control panel has a voltmeter and ventilation grilles in the body contribute to the natural cooling of the device and prevent overheating.