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What prompts the need for a Servo Voltage Stabilizer

5 Astonishing reasons that debunks the believe that Servo Voltage Stabilizer is Not Required and it “Hardly Costs you a Fortune.” Also, know how this Technology saves Financial Losses up to U.S. $ 7,135 Read More

Break Downs

Breakdown due to voltage fluctuation or unbalancing results in heavy financial losses such as in case of Hospitals, Read More

Increase Life Span of Electrical Appliances / Equipment

Most three phase loads like motors get seriously impacted due to voltage fluctuations so much so that its leads to Read More

Geneset Costs

At many sites, where Generators are installed with an AMF Read More

Energy Savings & Reduction in Electricity Bills

In case of Motors, the effect of Unbalanced & Fluctuating Voltage is to Read More

Restart & Repairs

With the sophisticated automation today, in many applications where Read More

The only “fit and forget” solution to all the voltage related problem, is a Servo Voltage Stabilizer, which practically is low on maintenance and has a long working life. Read More

Get Best Servo Stabilizer Price

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L.T. AUTOMATIC SERVO VOLTAGE STABILIZERS / REGULATORS

RECONS, a Pioneer Stabilizer Manufacturer & Exporter offers a wide range of Oil Cooled & Air Cooled Stabilizers ranging from 5 KVA to 8000 KVA available in Balanced & Unbalanced Input Voltage Ranges.

20 KVA Servo Stabilizer
30 KVA Air Cooled Voltage Stabilizer
150 KVA Voltage Stabilizer
800 KVA Air Cooled Servo Stabilizer
800 KVA Air Cooled Servo Stabilizer
300 KVA Automatic Voltage Regulator
800 KVA Air Cooled Servo Stabilizer
1 MVA Servo Voltage Stabilizer
1600 KVA Automatic Voltage Regulator (AVR)
3 MVA Servo Voltage Stabilizer

Standard Voltage Range & Fittings.

Input Voltage Range 300 V – 460 V 340 V – 460 V 360 V – 460 V
Output Voltage 400 / 415 V ± 1%

Apart from these Input and Output Voltages, the LT Automatic Servo Voltage Stabilizers can be manufactured to different Voltage values, based on the needs of a customer.

11 Points of Comparison between a Rolling Contact Type vs. Dimmer / Variac Type Servo Voltage Stabilizer

Do not Miss the Recommendations made at the last for choosing the type of Servo Voltage Stabilizer that is apt for your requirement.

Rolling Contact Type

  1. Movement: Carbon Roller is used for making a contact, the roller carbon always rolls over the surface of the bare windings.
  2. Wear & Tear: Carbon is always rolling on the smooth surface of the winding track, the frictionless movement makes the wear and tear of the carbon roller minimal and hence has a long life of 5 Year and above.
  3. Copper Conductor: Copper Strips are used for the purpose of windings. These strips have a better current carrying capacity and offer an absolutely smooth surface for making contact with carbon roller.
  4. Core: Prime Grade, CRGO (Cold Rolled Grain Oriented) annealed Lamination conforming to the latest international standards is used. This type of core maintains the No-Load Losses of the AVRs under 1.3%.
  5. Inspection: Condition of Carbon Rollers can be inspected without taking out the whole Transformer / Regulator assembly. Only by removing the top cover the carbon rollers can be observed.
  6. Efficiency: Electrical & Mechanical designs and construction makes it a highly efficient equipment of approx. 98% to 99% efficiency. This results in minimum losses and low electricity bills.
  7. Installation: These Stabilizers can be installed in open without roof or shelter on Outdoor sites, without any fear of direct contact with rain or dust.
  8. Rate of Voltage Correction: It is generally between 7 Volts / Second to 20 Volts / Second.
  9. Life: Under normal working conditions, the life is between 15 to 20 Years.
  10. Surface Area: Owing to its linear, vertical design the Floor Surface Area requirement is less in comparison to Variac / Dimmer type Servo Stabilizer. Thus the utilization of any property per square feet is more.
  11. Loading: It is suitable for 100% Loading on continuous duty cycle. For a load of 100 kVA, a 100 kVA Rolling Contact Servo Voltage Stabilizer is suitable.

Dimmer / Variac Type

  1. Movement: Carbon Brush is used for making a contact, the brush always Slides as it moves on the surface of bare windings.
  2. Wear & Tear: Carbon is always sliding on the winding surface, creating more friction and being more prone to wear and tear of the carbon brush and hence has a shorter life of 1 or 2 Years.
  3. Copper Conductor: Copper Wires are used for the purpose of windings. These wires have comparatively low current carrying capacity and doesn’t offer an absolutely smooth surface for making contact with carbon brush.
  4. Core: Generally CRNGO (Cold Rolled Non Grain Oriented) lamination is used, raising the No-Load Losses in comparison to Rolling Contact to almost 3%.
  5. Inspection: Condition of Carbon Brushes can’t be inspected without taking out the whole Stabilizer assembly. This requires a lifting arrangements at the site.
  6. Efficiency: Limitation of Electrical & Mechanical design and construction confins the efficiency between 93% to 95%. This results in more losses and higher electricity bills.
  7. Installation: These Stabilizers can be installed under the roof or shelter only on Indoor sites. Any direct contact with rain or dust can be fatal for these stabilizers.
  8. Rate of Voltage Correction: A faster rate of voltage correction is attained, which is generally above 25 Volts / Second.
  9. Life: Under normal working conditions, the life is approximately 3 to 5 Years.
  10. Surface Area: The design of Dimmer / Variac Type Servo Stabilizer is of Horizontal orientation, which requires more Floor Surface Area. Thus utilization of any property per square feet is less.
  11. Loading: It is suitable for 65% to 75% Loading on continuous duty cycle. For a Load of 100 kVA, a 125 kVA or a 135 kVA Dimmer / Variac Servo Voltage Stabilizer is required.

Recommendations

There are many aspects that goes while deciding for whether to go for Rolling Contact Type or Variac / Dimmer Type Servo Voltage Stabilizer. Here are some recommendations that can help make a correct decision.

  • Commercially Variac / Dimmer Type Servo Voltage Stabilizer are almost 40% to 50% low in cost as compared to a Rolling Contact Type Servo Voltage Stabilizer, so for loads below 200 kVA, one can compromise on the Efficiency, Energy Savings and Long Life of Rolling Contact and can opt for Variac / Dimmer Type considering its low investment cost.
  • For requirement where faster rate of correction is required and load is under 100 kVA like In case of CNC Machines, a Variac / Dimmer Type Servo Voltage Stabilizer can be installed.
  • Rolling Contact Type Servo Voltage Stabilizer should be installed for Outdoor Installations where no coverage is available and the load is also high.
  • In case of Indoor Installations that too where an Air Cooled Servo Stabilizer is required considering fire hazards and Loads are above 200 kVA, for instance Banks, Data Centres, Shopping Malls, IT / Software Centres. A Rolling Contact Type Servo Voltage Stabilizer is the only option, since Variac / Dimmer Type Servo Voltage Stabilizer of high capacity in Air Cooled are either not feasible to be constructed or it becomes gigantic in size to fit in indoor spaces, considering into account the high value property of such businesses that needs to be utilized for the Stabilizer installation.

9 Facts that Impacts the Buying Cost of Servo Voltage Stabilizer upto 57%

Do not decide for the Servo Voltage Stabilizer Price or Brand till you get the below parameters clear.

  1. Capacity: Choosing or understanding the right kW / kVA Capacity of the Load is an utmost important point before initiating any decision for buying a Servo Voltage Stabilizer. Many times due to lack of electrical knowledge, the exact kW or kVA is not estimated properly by the buyer. This may eventually lead to going for an overrated or underrated capacity of the Stabilizer. Along with this a future projection of the expansion in load over a period of 3 to 5 Years should also be considered, so that one doesn’t reinvest on the Servo Stabilizer upon enhancement of the load. The optimum estimation of the capacity of load can approximately save anywhere from 11% to 15% of the investment cost.
  2. Type of Servo Voltage Stabilizer: In a three phase electrical system, it is important to decide whether one is going for a Rolling Contact Type Servo Voltage Stabilizer or a Dimmer / Variac Type Servo Voltage Stabilizer. Technically both of them solve the same purpose but constructionally both of them are entirely different, and the performance as well as the ROI (Return on Investment) is totally diverse in both the cases. The investment cost in both the cases varies upto 63%, so it is advisable to understand the right type of technology before making a decision.
  3. Input Voltage Range: Knowing the minimum and maximum voltage levels at the installation site plays a significant role in the designing, manufacturing and costing of a Servo Voltage Stabilizer. Not just it is important commercially but technically also the performance and purpose of installing a Servo Stabilizer can go haywire. If a narrow input range is chosen, a Servo Voltage Stabilizer won’t be able to deliver a correct output voltage in the event of input voltage higher than or lower than the range of the stabilizer. Similarly, in case a wider range is chosen in comparison to what is actually required, one may end up paying a hefty price. For the same capacity of Servo Stabilizer, the price of the Servo Voltage Stabilizer can vary up to 37% based on different input voltage rangers.
  4. Output Voltage: It becomes necessary to understand, what Output Voltage is desired from a Servo Voltage Stabilizer, which should match with the requirement of the load. Some standard output voltages used for most of the electrical application in three phase are; 380V, 400V, 415V and 433V. This factor has a techno-economical impact, the design and manufacturing of a Servo Stabilizer changes as per the selection of the desire output voltage and also varies the cost of investment upto 13%.
  5. Duty Cycle: Knowing the exact duty cycle of the Servo Voltage Stabilizer is a must, as mostly the servo stabilizers are designed and manufactured for 80% load capacity and a buyer has to pay an extra cost for achieving 20% capacity of the rated stabilizer. A genuine manufacturer will offer Servo Voltage Stabilizer that is designed and manufactured for Heavy Duty, suitable for 100% Load and Continuous Duty Cycle. The conformity of this factor saves the investment cost by approximately 17%.
  6. Installation: A Servo Voltage Stabilizer is housed in a Mild Steel Sheet Tank, these tanks are fabricated as per the need of the customer. In case a stabilizer has to be installed Outdoors, its design of tank would consider all protection against climatic conditions such as Wind, Dust, Heat, Moisture and Rain and all the Control and Metering devices will be covered accordingly. Whereas, in case of Indore installation, the Control and Metering devices would be exposed. Decision on going for either of the two options has to be taken while placing the order itself, since it cannot be changed after the manufacturing is complete. The financial implications of these two options can vary the cost anywhere from 5% to 63%, due to the fact that Dimmer / Variac Type Servo Voltage Stabilizer can’t be placed in open outdoors sites, so one might have to consider going for Rolling Contact Servo Voltage Stabilizer only.
  7. Cooling: Servo Voltage Stabilizers are available in Oil Cooled & Air Cooled models. The type of cooling required by the customer depends on the site’s conditions, especially in case of indoors, where highly sophisticated and delicate electrical installations are involved, preference is given to Air Cooled Servo Stabilizer, eg. IT Centres, Telecom Towers, Banks, Hospitals, Hotels etc. Air Cooler Stabilizers are avoided for Outdoor Installations to abstain from any contact with atmospheric moisture and dust. Also in case of higher ratings, 750 kVA and above, Air Cooled Stabilizers are not prefered due to dimensional and electrical constraints. L.T. Oil Cooled Servo Voltage Stabilizers are more sturdy in construction and are suitable for Outdoor Installation, available upto a rating of 2000 kVA. Cost difference between Oil Cooled and Air Cooled Servo Stabilizer can vary up to 43%, for the same ratings and voltage range. So once must be clear on which one is aptly suitable or should consult an expert before taking the final decision.
  8. Balanced or Unbalanced Input Supply: It is of a great significance to understand whether the input voltage supply received at the site is balanced across all the three phases or there is an unbalancing in the voltages of three-phase by more than 10 Volts. As in this situation the Servo Stabilizer will be designed and manufactured for controlling an unbalanced input voltage supply by independent controlling and monitoring of all the three phases. In comparison to a balanced type Servo Voltage Stabilizer, cost of unbalanced one is almost 37% higher. And technically for an unbalanced voltage, a balanced type Servo Stabilizer would be a complete misfit.
  9. Space / Dimension & Placement: A Servo Voltage Stabilizer can’t be a miss fit in the space available for its installation. Generally, Servo Stabilizers are installed Indoors, Outdoors, Basements and even on Terrace. This has to be made clear to the manufacturer for the exact placement and dimensions of the open area available in terms of Length, Width & Height of the passage area to avoid any obstruction at the time of installation. Especially, when the Servo Stabilizer is to be placed in the basement or at the terrace, all parameters of a safe unloading and placement must be discussed with the Servo Voltage Stabilizer Manufacturer before placing the order.

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RECONS – A Leading Automatic Servo Voltage Stabilizer / Regulator Manufacturer & Supplier.

Our Clientele

Known for its supreme manufacturing standards, RECONS has over 10000 successful Servo Voltage Stabilizer installations across the globe and the count is ever increasing.

International Presence

As a renowned Servo Stabilizer Exporter, RECONS has established its presence in 19 Countries spread across 4 Continents.

Client Log

RECONS has successfully delivered Servo Voltage Stabilizer and its expertise to over 7000 satisfied clients since 1987.

Certifications

As a credible RECONS has received quality certifications in India from some of the premium organizations.

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