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VJS ELECTRICAL & ELECTRONICS is a leading manufacturer of transformers, servo stabilizers, and electrical equipment in India. With decades of experience, we provide high-quality power solutions that protect your valuable electrical equipment from voltage fluctuations while optimizing energy consumption.

Our product range includes single-phase and three-phase transformers, industrial servo stabilizers, automatic voltage controllers, and electrical accessories designed to meet the diverse needs of residential, commercial, and industrial applications across India.

The basic purpose of our Automatic Voltage Controller (AVC) is to maintain the desired voltage and to reduce the breakdown of electrical equipments due to low/high voltage. Power saving and reduction in MDI and improvement of P.F. will be added advantage of stable voltage.

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Automatic Voltage Control

General Trend of Voltage During Day Time

340V-400V
09:00 HRS - 12:00 HRS
400V-440V
12:00 HRS - 14:00 HRS
Lunch Hours
340V-400V
14:00 HRS - 18:00
400V-430V
18:00 HRS - 22:00 HRS
Peak Hours Restriction
400V-470V
22:00 HRS - 05:00 HRS
400V-450V
05:00 HRS - 09:00 HRS

NOTE: We can provide you the computerized printout of voltage variation at your premises by installing the data Loggers.

Unbalanced Type AVC

Unbalanced type Automatic Voltage Controller (individual phase controller) is required in the following conditions:

  • Where the customer do not have their own distribution transformer.
  • Where the industries/offices which are situated in residential/commercial areas.
  • Where most of the load is of single phase in nature or sophisticated/electronic machinery is installed.
  • Where the input voltage is very low or very high.

This unbalanced voltage may not be of continues nature, it may happen for short duration during the day. As such, you should install stabilizer suitable for unbalanced type voltage, which will cost initially higher but the advantages will be much more.

Dimensions of Unbalanced Automatic Voltage Controller with Protection System & Bypass Arrangement

Sr. No. Capacity/Range Dimensions (L X W X H)
1 30 KVA (330-470/400V 1%) 850 X 600 X 800 (MM)
2 100 KVA (330-470/400V 1%) 1200 X 1000 X 1000 (MM)

Benefits of Automatic Voltage Controllers

In India all electrical equipments are designed for 230/400 volts single/three phase. After installation of Automatic Voltage Controller you will have the following Advantages:

HIGH VOLTAGE

Voltage Variation % Reduction possible in breakdown of Electrical Equipments with AVC % Power saving possible with AVC
Motors Below 10 HP Lighting Load Motors Below 10 HP Lighting Load
380-400 V No Reduction and No AVC required No Reduction and No AVC required No Power Saving and No AVC required No Power Saving and No AVC required
400-420 V 5% 10% 3% 5%
420-440 10% 20% 5% 10%
440-460 20% 40% 7% 20%
460-480 40% 80% 10% 30%

LOW VOLTAGE

  • At low voltage you will not be able to operate your machines at rated capacity resulting in lower production.
  • You need to run the machines on DG set. The power cost of DG set is three times as compared to charge by electricity board.

Capital & interest cost is just 1.5% per month.

Voltage variation is common phenomenon. The input voltage is generally low during day time and high during night hours

Apart from above, few months in a year/few days in a month/few hours in a day the voltage is either low or high due to the following reasons:

  • Holidays
  • Peak Hours
  • Rainy Days
  • Agricultural & Weather Conditions etc.

Therefore for smooth function, It is suggested to install AVC with 15% or 20% input voltage variation range i.e. 340-460 volts or 320-480 model.

SUGGESTION

It is suggested to note down hourly input voltage by installing digital voltmeter at the security gate of your factory premises for a week.

Key Advantages

  • Reduction in breakdown of electrical equipments up to 80%
  • Energy saving up to 5%
  • Improvement in power factor and reduction in MDI
  • Uniform quality of end product
  • Better efficiency of plant due to lesser Breakdown
  • Depreciation @80% as per Income Tax Act

The above advantages have been confirmed by the customers by placing repeat orders for their expansion of plants.

PAY BACK

It is a equipment, which pays back its cost within 1-2 years. Even if you appoint a supervisor to monitor the voltage variation round the clock, it will cost more than Rs. 15,000/- per month and will be able to record the voltage variation, but shall not be able to do any rectification.