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Due to the high-tech infrastructural unit, we are capable to produce, provide and export Variable Autotransformer (variac), Variac Auto Transformers. These devices are utilised in diverse electrical appliances for adapting and sustaining the uneven voltage. Due to their precise working and elevated performance, these products efficient security against voltage rushes and sparks. Variable Autotransformer (variac), Variac Auto Transformers is provided to the end users in a particular time period due to our widespread distribution network. Variable auto transformer is an electric transformer that has a purpose of providing continuous AC voltage supply with AC control voltage controls. It is applicable in both, residential areas and industries, as it provides an output which is waveform distortion free. All electronic equipment, machinery and appliances are safeguarded by this transformer, from voltage fluctuations. Using a voltage factor, one can easily control the current, heat, light as well as motor speed. During the construction of this transformer, a single layer winding is created on the core of CRGO steel. One side of copper winding has a special durable contact surface, which is further specially finished.
Key Points :-
This high efficiency transformer is simple to install and connect.
The centre shaft has a contact arm with carbon brush. This carbon brush slides over the winding and taps of a voltage portion across the winding upon the rotation of the control knob. The position of the brush is adjusted to obtain any desire voltage with in the maximum range.
Using this transformer, output voltage more than twice the input voltage can be boosted.
This is widely used in hotels, colleges, universities, auditorium, conference hall, and laboratories. This works best for testing instruments, welding equipment, stabilizer, rectifiers, and battery chargers.
We present a broad range of superior quality changeable Auto Transformer (Variac). This kind of transformers is AC voltage manages that offers a variable AC voltage. Their deformation free output is perfect for responsive electronic applications. These transformers have a solitary layer winding on a toroidal core of superior-grade cold rolled grain oriented (CRGO) steel. On one face of the copper winding besides the periphery, a particular sturdy contact surface is created and an especially completed carbon brush glides effortlessly on the surface. A contact arm holding the carbon brush fixed on the centre shaft and as the control button is rotated the carbon brush glides over the winding and taps of a segment of voltage crossways the winding. Variac transformers can amplify the output voltage in overload of two times the input voltage. Any wished voltage with in the utmost range can be acquired by altering the location of the Brush. The regulated dial show roughly output voltage at no weight, when the contribution is at its rated value. Rotary motion of the arm by physical or motor drive sends an output voltage from 0 to over line voltage.
Advantages and Disadvantages :-