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Stabilizers Oil Cooled Roller Stabilizers

Automatic Voltage Stabiliser is necessary for smooth functioning

In spite of best efforts, Electricity board cannot ensure constant voltage to the consumer because of the long and inadequate distribution lines and irregular load patterns on distribution transformers. Generally, voltage is low during day time and high during night. Moreover on holidays, peak hours, rainy days and when agricultural and Industrial loads are switched off, the voltage rises sharply which is potentially dangerous to cause serious damages to your electrical appliance.

Higher voltages lead to higher current & lead to

If you install a servo stabiliser, you maintain a voltage of 390-400V & motor will operate smoothly consuming 15-20% lesser current accordingly relay settings can be reduced by 15-20%.

We at TechnoVision manufacture Servo Stabilisers as per IS: 9815


Specifications : Oil Cooled Roller Type Servo Controlled Voltage stabilizer’s

Capacity. 100  KVA to 2000 KVA
Input Voltage. 360 Volts to 480 Volts
Output Voltage 415 or 400 Volts +/- 1%.
Phase. 3-Ph, 4 Wires.
Frequency. 50 Hz.
Cooling Oil Cooled.
Mode of Operation Automatic/Manual/Handle
Type of Cooling. Oil Natural Air Natural type.
Copper. Electrolytic Grade.
Temp. Rise 35°C Deg. Cent. Above Ambient.
Winding Temp. Rise 40°C Deg.
Transformer Oil As per IS 335
Output Accuracy +/- 1% from No load to full load.
Response Time Instantaneous
Over Load Capacity Our Linear Regulator type Servo Voltage Stabilizer Will be very much suitable to withstand 50% over Load for 30 seconds & 75% overload for 10 Seconds.
Wave Form Distortion Nil.
Efficiency more than 99%
Losses at No Load 0.12% of the total capacity
Losses at Full load 0.7% at full load.
Metering Analog Metering for Phase & Current flow.
Terminations Suitable Aluminum Bus Bars will be provided In the Termination Box.
Expected Working Life More than 20 years
Control Panel Control Panel will be provided on the front side of the equipment & the control cards fitted inside the Panels are far from the heating area.
Regulator Type Linear Plus/Minus Type copper strip wound instead of copper wire wound type Vertical Rolling type for each phase to increase operating efficiency & Life
Carbon Contact Assembly Self lubricated Carbon roller assembly for each phase instead of ordinary Carbon Brushes to get more reliability and trouble free performance.
Protection Hi/Low voltage cut off, Over Load & Short circuit protections are part of the circuit. To activate you have to install switch gear
Manual Bypass Optional feature

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