Reliable Power Systems
ISO Certified
An ISO 9001 : 2008 Certified Company
Home About Us Products Quality Assurance Photo Gallery Contact Us Enquiry Form
L.T. Automatic Voltage Stabilizer Automatic Voltage Stabilizer L.T.Voltage Stabilizer L.T. Automatic Voltage Stabilizers


Download Catalogue
L.T. Automatic Voltage Stabilizer Automatic Voltage Stabilizer
Click Here Click Here

L .T. Voltage Stabilizer
Company Video
Home » Products Range » L.T. Automatic Voltage Stabilizer

L.T. Automatic Voltage Stabilizer

L.T. Automatic Voltage Stabilizer
Electricity is the heart beat of any industry/office and Transformer is the heart of the Company but today scenario hardly any industry receive HEALTHY ELECTRIC SUPPLY (Constant Voltage) due to long transmission line, imbalance between supply & demand of power & poor infrastructure. Higher & Lower voltages above rated voltage adversely affect the life of the equipment and consume more power thus increases the burden on the balance sheet of the company so to solve we have automatic voltage stabilizer, l .t. voltage stabilizer. Generally 90 % of the industrial load is of motors and the higher current effects the Electric motors (particularly smaller capacity motors up to 7.5 H.P.) in three ways
  • Higher current produces higher losses in electrical motors which causes premature failure of winding.
  • These higher losses of electric motors also increase the losses of cables, switches, transformers & other associated equipments.
  • For smooth continuous operation of motors, over load relays are usually set at 20% higher setting

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 motors can withstand the high current for this period and will be safe. Also, the relays, contactors, switchgears, etc. incorporated with the motor will be safe. L.T. AVR being easy to handle are installed in all the running units, units having L.T. connections, units having small H.T. connections. These can be manufactured for Balance Input Voltage and Unbalanced load or Unbalanced Voltage and unbalanced load

Technical Specifications
We provide the wide range & model of the servo voltage controller according to the customer requirement.

Standard Input Voltage Ranges of servo voltage stabilizer are under
Input Voltage 360-450 V 350-460 V 340-460 V 320-460 300-460V
Efficiency (as Calculated) 99.6% 99.5% 99.35% 99.0% 98.7%
Output Voltage 400 V± 1% , 3 Phase, 50 Hz
Cooling ONAN
Type Indoor / Outdoor
Temp Rise (max) 35 º C above ambient
Mounting On Uni-Directional Wheel
Wave form distortion Nil
Response Time 10 ms
Duty Cycle 100 % Continuous

Note : Other voltage range & special feature are also provided according to the site requirement.
By installing the RELIABLE’S Automatic Voltage Controller with Rolling Contact Mechanism Technology get the following advantage.


Technical Advantages of RELIABLE’S make Automatic Voltage Controller (AVC)
Applications of Automatic Voltage Regulators

Effect of Voltage fluctuation on the different equipment
The table below compares the behavior of 5 H.P. motor at different voltage:
Input Voltage Current KVA PF
400 7.5 A 5.2 0.8
425 11% More 18% More 0.7
435 19% More 28% More 0.61
445 26% More 38% More 0.57

The table below compares the behavior of 60 watt lamp at different voltage:
Voltage Current Watts Luminous Intensity Life in Hours
220 0.25 54 W 690 2000
230 0.26 60 W 710 1000
240 0.27 65 W - 8.3% More 820 575
250 0.28 70.6 - 17.6% More 943 338
260 0.29 75.4 - 25.6% More 1073 200
270 0.31 83.4 - 39% More 1213 100

Yes! I am Interested

Electrical Control Panels

Electrical Control Panels
Electrical control panels offered by us are designed to deliver stable and uniform distribution of load. The use of tested and superior quality components in its construction also ensures in them better durability standards. Some of the components used include switchgears, protection type, power control centre, motor control centre, distribution boards, power factor controllers.


Yes! I am Interested

Built in AVR

Built in AVR
It is a very altogether different product basically a combination of Standard Distribution Transformer and HT Automatic Voltage Regulator. The Standard Transformer with OLTC can correct limited voltage variation in certain steps whereas Built-in operates steplessly monitoring the output voltage continuously. The incoming fluctuating H.T. supply is initially stabilized and then fed to the stepdown transformer and thereby the L.T. Output is maintained within ±1% accuracy.

Built - in has the following advantages:

Yes! I am Interested

Home About Us Products Quality Assurance Photo Gallery Contact Us Enquiry Form
Member© Reliable Power Systems. All Rights Reserved (Terms of Use)
Developed and Managed by IndiaMART InterMESH Limited

Looking for Product Name ?