COSMOSTAT INDUSTRIES (REGD.) Tri Nagar, Delhi

We are offering servo stabilizer. Electrical energy has become a basic necessity for our present living conditions. Electrical & electronics equipment from ordinary bulbs to sophisticated computer stations, from tiny toy motors to huge machinery motors, consume electrical energy. At any given instant a group of such units are being switched on or switched off at various location throughout power distribution lines. Due to such addition or subtraction of loads, the supply terminal voltage fluctuates. The voltage fluctuation can be controlled manually or automatically by various methods. The safest, surest and the most accurate of them all is servo controlled method, which is widely accepted. Cosmostat servo controlled voltage stabilizer has been developed after immense study of the fluctuation problems and research in the field. The major advantage of having an cosmostat servo controlled voltage stabilizer is that the right from the transformer and variac circuit, all the components are manufactured and assembled in-house with assured quality control at every stage of manufacture. The performance of any electrical equipment is optimum at its rated voltage. Both over-voltage and under voltage produce harmful effects. Under voltage generally reduces efficiency, whereas over voltage shortens life.

We are offering cosmostat variac is continuously variable autotransformer, having a single layer winding on a toridol core of high-grade cold rolled grain oriented (crgo) steel. On one face of the copper winding along the periphery, a special durable contact surface is made. A specially finished carbon brush slide smoothly on the surface. A contact arm holding the carbon brush fitted on the centre shaft and as the control knob is rotated the carbon brush slides over the winding and taps of a portion of voltage across the winding. Any desire voltage with in the maximum range can be obtained by adjusting the position of the brush. The calibrated dial show approximately output voltage at no load, when the input is at its rated value. Rotation of the arm by manual or motor drive delivers an output voltage from 0 to above line voltage.