Capacity : 100 to 5000 KVA
Voltage fluctuation is a common phenomenon in every part of the country. The industrial units running round the clock, usually face the problem of low and high voltage. 90% of industrial load motors . Electric motors draw considerably high current at low & high voltage. This higher current affects the electrical motors ( particularly smaller capacity motors upto 7.5 H.P.) in three ways:
With the installation of the stabilizer and maintaining 390/400 volts, the motor will operate smoothly drawing 15-20% lesser current and correspondingly the relay setting can be reduced by 15-20% In case single phasing occurs, the relay will trip in 40-50 seconds. The motor can withstand the high current fot this period and will be safe. Also, the relays, contactors, switchgears, etc. incorporated with the motor will be safe
The industrial units having acute /higher failure rate of Electrical Equipments such as bulbs tubes, chokes, starter, contactor coils & motors (particularly smaller capacity motors upto 7.5 H.P) etc. should verify that it may be due to HIGHER voltage. You may note down Hourly readings of voltage variation for few days. If you find that input voltage is above 230 volts single phase / 400 volts Three phase even for few hours a day, then you definitely require a stabilizer.
How to Access Higher Losses & Low Power Factor in Industrial Units Without Installing Stabilizer?
Note down hourly readings of current and voltage of one motor operating at constant load for 2-3 days. From the different readings you will observe that the current drawn by the motor is minimum at 390/400 volts as compared to the current drawn at other voltages. This means that power consumed by the motor is minimum at 390/400 volts.
Also note down hourly readings of voltage and K.W. from your Electronic Energy Meter for 2-3 days. From the readings you will observe that K.W. is minimum at 390/400 volts in most of the readings as compared to the higher voltage.
If you find that the above collected details are true then you will certainly have the advantages after installing the Servo voltage stabilizer as mentioned on succeeding page.
The table below gives approximate quantitative advantages of Automatic Voltage Controller at various voltage fluctuation levels.
|Input Voltage Variation||Possible % Reduction In Breakdown||Possible Appx. Power Saving|
|Motor Load Below 10hp||Lighting Load||Motor Load below 10hp||Lighting Load|
|380-400 volts||Nil||Nil||Nil||Nil & no servo stabilizer required|
|Jindal's Make Roller Type Regulator||Conventional Make with Carbon Brush Regulator|
|Power consumption is 0.5 to 1.5% depending upon the input voltage range||Power consumption is 2 to 7% under similar conditions|
|Suitable for continuous 100% duty cycle||Suitable for only 30% to 40% duty cycle|
|Life at full load is 15-20 years||Maximum life is 2-3 years at full load|
|Five years unconditional guarantee||Normally guarantee for one year|
|Negligible losses in full boost & buck condition||Max. Losses in full boost and buck condition|
JINDAL’S Servo Voltage Stabilizers are available in a wide range and variour models, incapacities ranging from 100 KVA to 5000 KVA. The standard models conform to the following specifications:
|Input Voltage (Volts)||360-450, 350 - 460, 340 - 480, 320 - 460, 300 - 460|
|Efficiency (Approx.)||99.5% 99% 98.7% 98.25% 98%|
|Output Voltage||400 V +/-1%, 3- Phase, 50 Hz|
|Cooling||Natural Oil Cooled (upto 5000 KVA) / Air Cooled (upto 500 KVA)|
|Type||Indoor / Outdoor|
|Temeprature Rise (Max)||30 degree centigrade above ambient tem perature|
|Correction Rate||6-8 V / Second (Up to 500 KVA) and 3-4 V / Second (Above 500 KVA)|
|Wave Form Distortion||Virtually Nil|
|Duty Cycle||100% Continuous.|
Owing to its high efficiency & associated benefits, the pay-back period for the cost of JINDAL’S stabilizers is ganerally between 6 to 12 months. And it saves you significant costs in subsequent years through its life.
|Cement Plants||Rolling Mills||Rubber Industries||Distilleries & Beverages|
|Flour Mills||Textile Mills||Tea Estates||Hospitals|
|Engineering Units||Paper Mills||Food Processing Units||Nursing Homes|
|Pharmaceutical Units||Tube Mills||Oil & Vanaspati Plant||Hotel & Clubs|
|Cold Storage Units||Rice Shellers||Footwear & Leather Units||High Rise Buildings|
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