Before starting this article, our organization wants to tell you that Since 1967 Jindal is one of the prominent manufacturers of Servo Voltage Stabilizer. Jindal’s Automatic Voltage Controller has been helping the industry from overcoming the problem of voltage fluctuation & equipment failure since last four decades.
Servo Voltage Stabilizer’s Overview 
The main phenomenon of Servo Voltage Stabilizer is to maintain your voltage variation and provide a constant voltage for equipment to the accuracy of ± 0.5 to 1.0 %. It is also known as Automatic Voltage Controller Voltage Variation manifest in many different ways:
- Unbalanced Voltage: Generally, This type of problem is faced by industries due to a common transformer from where multiple consumers are drawn power.
- High Voltage or Surges: Surges might be generated by disconnection of large loads, increase the voltage at generating plant, atmospheric events, units located close to start a supply line, etc.
- Low voltage Or Sags: It may be caused due to undersized distribution lines, a connection of large loads to the network, ground faults, units located towards the end of a long supply line, etc.
The occurrence of the above phenomenon depends on the cause and is not easily predictable. Broadly, voltage is low during day time and high during the night hours. moreover, on holiday peak hours, rainy days and when the commercial/agricultural load is switched off, the voltage rises quite sharply.
Importance of Three Phase Servo Voltage Stabilizer
Let’s draw an analogy of a human body. Our body needs to maintain a constant temperature of 98.4 F to work effectively. Even a minor increase or decrease in body temperature can lead to further deterioration of one or more body parts.
Similarly, most Electrical types of equipment require a constant voltage supply of 400v to last longer & run efficiently. Electric motors draw considerably high at high/Low voltage, causing excessive power losses and resulting in their premature failure. Similarly, Bulbs/Tubes/luminaries could consume up to 40% more power at high voltage and may last for a mere 10% of their normal life.
Advantages of Three Phase Servo Voltage Stabilizer
- Up to 80% reduction in the failure rate of electrical equipment
- Energy-saving up to 10% (up to 30% on lighting load)
- Reduction in MDI
- Improvement in Power factor
- Uniform quality of end products
- Improves Productivity of the plant
- Depreciation @ 40% as per Income Tax Act (In India) being an energy-saving device.
- Improve the duration/life period of your equipment.
Specification Of Servo Voltage Stabilizer
JINDAL’S AVC is available in a wide range & various models. Besides, we also manufacture bespoke designs as per specific customer requirements. The standard models conform to the following specifications:
| Capacity | 30 kVA to 5000 kVA | |||||
| Technology | Linear Type On-Load Voltage Regulators with Stepless Regulation (also referred to as Vertical Rolling Contact or Columnar Design) |
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| Control Module | Microprocessor-based | |||||
| Frequency | 50 / 60 Hz ± 5% | |||||
| Type | Balanced (Common Control for all three phases. Suited for Balanced input supply & up to 40 % Unbalanced load)Unbalanced (Individual Phase Control. Suited For unbalanced input supply and unbalanced load) |
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| Load Variation | Admitted from 0 to 100% | |||||
| Installation | Indoor / Outdoor as per site requirement | |||||
| Core | CRGO Lamination Best Grade | |||||
| Copper | Electrolytic Grade (99.97% Pure) | |||||
| Cooling | Natural Oil-Cooled, ONAN (Available in all models) Air-Cooled, Natural / Forced (available in select models) |
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| Output Voltage | 400V ± 1% (Ph – Ph) / 230V ± 1% (Ph – N) | |||||
| Input Voltage |
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| *(wide & asymmetrical ranges are manufactured on order) | ||||||
| Efficiency |
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| Duty Cycle / Life | Designed for 100 % Continuous Duty Cycle & for a life of 18 – 20 years at extreme conditions |
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| Response Time | Less than 10 milliseconds | |||||
| Correction Rate | 6 – 15 Volts / second (up to 500 kVA) and 3 – 8 Volts / second (above 500 kVA) | |||||
| Waveform Distortion | Virtually Nil | |||||
| Ambient Temperature | -10 to +45 °C | |||||
| Mounting | On Unidirectional Wheels | |||||
| Termination | Aluminum Bus – Bars provided for Input & Output in a common junction box | |||||
| Optional Features | High / Low / Over Load / Single Phase Preventer / Short Circuit / Surge Suppressor / Bypass As on Request |
Demand Of Automatic Voltage Controller.
Servo Voltage Stabilizer/Automatic Voltage Controller is highly recommended in the following industry:-
| Mines & Collieries | Cement Plants | Flour Mills | Rice Shellers |
| Hotels & Restaurants | Food Processing units | Pharmaceutical Units | Engineering Products |
| Hsopitals & Clinics | Tea & Coffee Estates | Paper Mills | Cold Storages |
| Oil Plants | Rubber Industries | Textile Mills | Warehouses |
| Rolling Mills | Plastic Moulding | High Rise Buildings | Leather & Footwear |
| Vineyards & Poultry Farms | Sponge Iron Units | Breweries & Beverages | Showrooms |
| Schools & Colleges | Offices & Residences | Shopping Malls | Any kind of manufacturing |
Uniqueness Of Our Automatic Voltage Stabilizer
We are only one in this field who provide Five-year Unconditional Guarantee 
& serve the industry as nobody does.
When you choose JINDAL’S, you are assured of impeccable quality, durability, best-in-class efficiency, extra-long life and trouble-free performance for years, in other words – Lowest Total Cost of Ownership. We ensure that your investment in our products works round the clock & pays you back many times over!
