This is also a three phase transformer, however with each limb having one winding inside. The top winding is connected in series with inside winding. The Carbon brushes are on the outer load winding. This VARIAUTO has special application in Servo controlled Voltage Stabiliser with balanced loads & balanced input conditions. It can be also used for unbalanced load conditions upto a certain extent. This eliminates the 3 phase buck boost transformer thus making the TANK SIZE very compact. Presently ready model is suitable for 45 KV A, 3 PhStabiliser. Further models are under development.

We specialize in the manufacture of high current rated coils. The commutator surface of our coils is machine processed and hence very uniform and smooth. This is very important for proper collection of current by the carbon brushes thus reducing the heat generated. Our standard coils are 100 Amp, 150 Amp, 200 Amp. Using these coils we manufacture oil-cooled variautos from 100 Amp 3 Ph to 1200 Amp 3 Ph capacity (415 V input and 0-470 V variable output). In high current rated models we use multiple coils with properly rated balancing coils to achieve the rated current. Based on the calculations of cooling area appropriate no. of radiators &fins are used. These variautos are generally motorized with geared mechanism. We also cater to tailor-made requirements.

The DL (Double Layer) Variauto was specially designed in 1982, for the Servo Controlled Voltage Stabiliser Industry. Since then we have supplied thousands of such Variautos to the Industry & we can claim to be pioneers in India in this field of Variautos.

This DL Variauto combines the functions of Variauto and Buck Boost Transformer for the required range of Voltage. It makes the whole unit very compact, thus reducing the size of Servo Stabilizer Cabinet. The DL Variauto increases the productivity on Shop floor as the assembly & writing are considerably reduced. Its Electrical connection Diagram is already in the Main Brochure. We can tailormake this Variauto to suit your specific voltage range (i.e. 180V - 260V or 85 V - 135 V as required).

The Roller brushes used in these variautos are manufactured from special graphite slabs & have a metal insert. The movement of the carbon brush on the variauto track is with minimum friction, thus it is very very smooth & effortless. It also ensure longer life. Models available are 2A, 4A, 8 Amp. 10Amp. We can also give higher rated models of 15 Amp, 20 Amp, 28 Amp for oil-cooled applications.

These models are generally used in laboratories, educational institutions, test benches for testing various industrial equipment. They can be provided with MCB, indicators and switch gear as required. All three phase open construction models from 2 Amp to 60 Amp can be enclosed and freely movable trolley can be provided. Output voltages can be tailor-made as required.

This is also a three phase transformer, however with each limb having one winding inside. The top winding is connected in series with inside winding. The Carbon brushes are on the outer load winding. This VARIAUTO has special application in Servo controlled Voltage Stabiliser with balanced loads & balanced input conditions. It can be also used for unbalanced load conditions upto a certain extent. This eliminates the 3 phase buck boost transformer thus making the TANK SIZE very compact. Presently ready model is suitable for 45 KV A, 3 PhStabiliser. Further models are under development.

We specialize in the manufacture of high current rated coils. The commutator surface of our coils is machine processed and hence very uniform and smooth. This is very important for proper collection of current by the carbon brushes thus reducing the heat generated. Our standard coils are 100 Amp, 150 Amp, 200 Amp. Using these coils we manufacture oil-cooled variautos from 100 Amp 3 Ph to 1200 Amp 3 Ph capacity (415 V input and 0-470 V variable output). In high current rated models we use multiple coils with properly rated balancing coils to achieve the rated current. Based on the calculations of cooling area appropriate no. of radiators &fins are used. These variautos are generally motorized with geared mechanism. We also cater to tailor-made requirements.

The DL (Double Layer) Variauto was specially designed in 1982, for the Servo Controlled Voltage Stabiliser Industry. Since then we have supplied thousands of such Variautos to the Industry & we can claim to be pioneers in India in this field of Variautos.

This DL Variauto combines the functions of Variauto and Buck Boost Transformer for the required range of Voltage. It makes the whole unit very compact, thus reducing the size of Servo Stabilizer Cabinet. The DL Variauto increases the productivity on Shop floor as the assembly & writing are considerably reduced. Its Electrical connection Diagram is already in the Main Brochure. We can tailormake this Variauto to suit your specific voltage range (i.e. 180V - 260V or 85 V - 135 V as required).

The Roller brushes used in these variautos are manufactured from special graphite slabs & have a metal insert. The movement of the carbon brush on the variauto track is with minimum friction, thus it is very very smooth & effortless. It also ensure longer life. Models available are 2A, 4A, 8 Amp. 10Amp. We can also give higher rated models of 15 Amp, 20 Amp, 28 Amp for oil-cooled applications.

These models are generally used in laboratories, educational institutions, test benches for testing various industrial equipment. They can be provided with MCB, indicators and switch gear as required. All three phase open construction models from 2 Amp to 60 Amp can be enclosed and freely movable trolley can be provided. Output voltages can be tailor-made as required.