Air Cooled

Air Cooled Servo Voltage Stabilizers

Servo Voltage Stabiliser:

Three Phase - Aircooled 3 kVA - 150 kVA.

An Air Cooled Servo Voltage Stabilizer is an advanced automatic voltage regulator designed to deliver a stable and accurate output voltage even when the input power fluctuates.Using a servo motor controlled variable transformer, it continuously corrects voltage variations to protect sensitive electrical equipment from damage caused by over-voltage and under-voltage.

Product USPs / Salient Features

Highly reliable Microcontroller (DSP) based control system for accurate voltage regulation

Digital LCD display to monitor Input & Output Voltage (L-N & L-L), Output Current (R/Y/B) and Frequency

User-settable parameters from the front panel for Output Voltage, High/Low cut-off limits and Manual / Auto restart time delay

Fast response time through advanced microcontroller design for quick voltage correction

Cut-off protection with graded time delay for enhanced equipment safety

Overload, short circuit, phase failure & phase reversal protection

Product Applications

🧵 Textiles, Spinning, Garment, Knitting

🤖 CNC Machine Tools, , Wood Cutting

🏭 Food Processing,Printing

🎨 Colour Labs applications

🏥 Hospitals, & Testing Labs

🏢 Office Establishments

❄ Centralised AC, Lifts & Lighting

📡 Mobile Towers, Petrol Pumps,

Technical Specifications

Parameter	Specification
Type of Stabilizer	Three Phase Servo Voltage Stabilizer – Unbalanced Type
Construction	Indoor Purpose
Type of Design	Servo Stabilizer with Off-Grid Sensing Feedback System
Type of Cooling	Air Cooled
Servo Motor Type	AC Synchronous Stepper Motor
Input Voltage Range	280V – 480V (Customizable: 240–420V / 340–480V etc.)
Input Frequency	47 Hz – 53 Hz
Output Voltage	415V (User Settable ±1%)
Output Voltage Regulation	±1%
Control Design	Microcontroller (DSP) Based Control System
Waveform Distortion	Nil (Output waveform same as input)
Effect of Load PF on Output	Nil
Correction Speed	60 V / Sec
Response Time	10 ms
Efficiency	> 98%
Under / Over Voltage Cut-Off	Upper Limit +15% / Lower Limit -10%
Short Circuit Protection	HRC Fuse / Optional MCCB / MCB
Output Overload Protection	Electronic cut-off above 110% rated current
Phase Failure Protection	Built-in
Single Phasing Protection	Built-in
Stabilizer ON / OFF Operation	User Selectable Auto / Manual Restart
Display Type	Backlit LCD Display
Parameters Displayed	I/P & O/P Voltage (L-L & L-N), Current (R-Y-B), Frequency
Front Panel Indicators	LED Indicators for Input, Output, Fault, Bypass
Front Panel Interface	Menu, Up/Down, Enter, Reset Keys
Event Recorder	Fault History & System Status
Input / Output Connection	Terminal Block with Stud Arrangement
Emergency Manual Bypass	Built-in
Output Contactor	Built-in
Surge Protection Device (SPD)	Optional
Ambient Temperature	0°C to 50°C
Rating in kVA	5 kVA to 1500 kVA
Design Standards	As per IS 9815