Oil Cooled

Oil Cooled Servo Voltage Stabilizer

Servo Voltage Stabiliser:

Three Phase -Oil Cooled Servo Voltage Stabilizer

An Oil Cooled Servo Voltage Stabilizer is a high-performance automatic voltage regulator designed for continuous industrial operation where voltage fluctuations are severe and loads are heavy.Using a servo motor controlled variable transformer with an oil-filled copper wound power transformer, it maintains a stable output voltage of 415V ±1%, ensuring maximum protection for expensive three-phase equipment.Oil cooling provides superior heat dissipation, longer life, and higher kVA handling capacity compared to air-cooled stabilizers.

Product USPs / Salient Features

Advanced microcontroller ensures precise voltage sensing, fast correction and stable output even during severe power fluctuations.

Operates efficiently in extreme low and high voltage conditions, making it ideal for industrial areas with unstable power supply.

Maintains exact output voltage to protect sensitive and expensive machinery from voltage damage.

Each phase is regulated separately, ensuring perfect balance for unbalanced loads and uneven input conditions.

Superior copper windings with oil cooling provide excellent heat dissipation, higher efficiency and long service life.

Quick correction speed prevents equipment damage from sudden voltage dips and surges.

Products Applications

⚙ DSP Microcontroller contol

⚡ Wide Input Voltage Range

🎯 High Accuracy Output (±1%)

🔁 Independent Phase Control

🚀 Fast Response Time

📟 Digital LCD Display

🔒 Complete Protection

🔋 High Efficiency > 98%

Technical Specifications

Parameter	Specification
Type of Stabiliser	Three Phase Servo Voltage Stabiliser – Unbalanced Type
Construction	Indoor Purpose
Type of Design	Servo Stabiliser with Output Sensing Feedback System
Type of Cooling	Oil Cooled
Servo Motor Type	AC Synchronous Stepper Motor
Input Voltage Range	360V–460V / 340V–460V / 340V–480V / 310V–480V (Custom Designed)
Input Frequency	47 Hz – 53 Hz
Output Voltage	415V (User Settable – 400V or 380V L-L)
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 Voltage	Nil
Correction Speed	> 50 V / Sec (Varies for higher kVA ratings)
Response Time	10 milliseconds
Efficiency	≥ 98%
Under / Over Voltage Cut-Off	Upper Limit +5% / Lower Limit -10% from set output voltage
Short Circuit Protection	HRC Fuse or Optional MCB / MCCB
Output Overload Protection	Electronic cut-off above 110% rated current
Phase Reversal Protection	Built-in
Single Phasing Prevention	Built-in
Stabiliser ON / OFF Operation	User Settable Auto Restart (1–998 sec) / Manual Restart
Display Type	Backlight LCD Display
Parameters Displayed	I/P & O/P Voltage (L-L & L-N), Frequency, Current (R-Y-B)
Front Panel Indications	LED – Input Present, Output Normal
Front Panel User Interface	Menu, Up / Down, Enter / Set Keys
Event Recorder	Fault History (as per control system)
Input / Output Connection	Terminal Plate with Nut-Bolt Arrangement
Emergency Manual Bypass	Built-in (Up to 250 kVA)
Output Contactor	Built-in (Up to 250 kVA)
Surge Protection Device (SPD)	Optional
Ambient Temperature	0°C to 50°C
Rating Range	3 kVA to 2000 kVA
Design Standards	As per IS: 9815