AUTOMATIC VOLTAGE STABILIZER

Voltage fluctuation is a common phenomenon in our country. The industrial units which are running 24 hours, face the high and low voltage problem. 85% of industrial load is of motors. Electric motors draw considerably high current at high and low voltage. Further higher current affects the electric motors in different ways:

Higher current produces higher losses in electric motors, which causes premature failure of winding insulation.

It increases the losses of electric motors and other associated equipments.

This higher current of electric motor requires higher setting of overload relay to avoid frequent tripping of motor. Higher setting of overload relay have very little safety margin against single phasing & mechanical faults.

With installation of stabilizer, the higher current drawn by motor on account of voltage variation is eliminated. The overload relay can be set as per requirement of motor load, which will reduce the motor failure rate considerably.

AUTOMATIC VOLTAGE STABILIZERTECHNICAL SPECIFICATION

SUSHIL’S Automatic Voltage Stabilizers are available in a wide range and various models. The Standard Three Phase models are suitable for balanced input supply and fairly balanced loads.

Input Voltage 360-460V, 340-460v, 320-460V & 300-460V.
Efficiency (Approx) 99%     98.5%     98.3%     98%
Output Voltage 400 Volts ± 1%, 3Phase, 50HZ.
Cooling Naturally Oil Cooled.
Type Indoor / Outdoor
Temp. Rise (Max) 35°C above ambient
Rate of Voltage Correction 8 to 10V/Sec. (Upto – 500KVA)
Wave from Distortion Virtually Nil
Duty Cycle 99% Continuous
Mounting

On Uni – directional wheels.

NOTE : Non – Standard input and output ranges are also available against specific requirements.

DESCRIPTION OF SUSHIL’S AUTOMATIC VOLTAGE STABILIZER

ROLLING CONTACT TYPE TECHNOLOGY

In regulator we are using heavy section of electrolytic grade rectangular copper strip instead of copper wire to minimize the losses. It increase the efficiency of equipments. We are also using self – lubricating carbon roller assemblies instead of ordinary carbon brushes, which offers more reliability and trouble free performance of the equipment.

DOUBLE WOUND BUCK / BOOST TYPE SERIES TRANSFORMERS

In Buck / Boost transformers we are using CRGO lamination to minimize iron losses, the coils of Buck / Boost transformers are wound with heavy section of electrolytic copper losses for getting better efficiency of the equipment.

ELECTRONIC CONTROL CIRCUIT

SUSHIL’S Automatic Voltage Stabilizer consist of very simple electronic control circuit for monitoring and controlling voltage where repair and maintenance become very easy. The regulator and Buck / Boost transformers are oil cooled, housed in same or separate sheet steel tanks. Radiator are provided for effective cooling. The coils of voltage regulator & Buck / Boost transformers are vacuum impregnated and oven dried as per standard.

 

COMPARISON BETWEEN SUSHIL’S MAKE AND CONVENTIONAL MAKE AUTOMATIC VOLTAGE STABILIZER

SUSHIL’S MAKE ROLLING CONTACT TYPE REGULATOR

CONVENTIONAL MAKE WITH CARBON BRUSH REGULATOR

Power consumption is 0.5 to 1.5% depending upon the model and input voltage variation.

Power consumption is 3 to 5% depending upon the model and input voltage variation.

Suitable for continuous 99% duty cycle.

Suitable for 40 to 50% duty cycle.

The carbon roller roll, while moving on the coil track, so contact point of the roller goes on changing which prolongs the life of the roller.

Since the contact is by brush having flat surface, wear & tear of the brush is more, hence require frequent replacement.

Life at full load is 17 to 20 years.

Life at full load 3 to 5 years.

Negligible losses in full Boost and Buck condition.

Max. losses at full Boost and Buck condition.

Five years unconditional warranty.

Normal warranty for one / two years.

ADVANTAGE
Energy Saving upto 10% possible, Reduction in power consumption, Uniform quality of end product and lesser rejection, Reduced Failure rate of electrical equipments upto 80%, Improvement in PF and reduction in MDI

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