Servo Control Voltage Stabilizer, Power : 125 kVA

Servo Control Voltage Stabilizer and IGBT based Solid state stabilizer is a 3-Phase, distortion-free, DG set compatible automatic voltage, noise, harmonic controller. Servo Control Voltage Stabilizer gives perfectly stable output even under severe condition of unbalance input voltage and reduce the frequent breakdowns of sophisticated hi-tech machine, like CNC, computers, textile, printing, and medical equipment. Servo Controlled Voltage Stabilizer is special type of stabilizer with solid state liner/control and offers instantaneous response. It can be used for professional applications and offers guaranteed protection to sophisticated equipment against hazards of voltage fluctuation.
In this servo control voltage stabilizer there is ground fault monitoring system with trip and indication. Basically widely fluctuating mains supply is always a cause of concern to the use of modern precisions and sophisticated electrical and electronic equipments like computers , NC/CNC machine tools , even the performance are more rugged equipments like induction motor and heaters , deviates with fluctuating supply voltage , so here �Servo Control Voltage Stabilizer� is an effective and economic solution to this chronic problem. These are made in large variety to meet every need of all types of industries.
Another big advantage of this Servo Control Voltage Stabilizer is that here there is various type of card to perform actual operation and which is easy to maintain and repair such as :

• Servo Drive Card.( SRV.DRV)- This card performs operation to maintain voltage regulation at output unit.
• RAN-SEL Card-This card provides for the reference for the operation of servo drive card.
• Trip Card- This card is responsible for all logic operation and control operation.
• 3-phase Mimic Card- This card serves the purpose of displaying the status of all voltage and current at the input and output of the unit.

Brief Operation : The voltage stabilizer works on a simple principle of adding or a subtracting a voltage to the supply voltage in a appropriate quantity to correct it to required level. This voltage to be added or subtracted is obtain from main itself using a continuously variable voltage auto transformer , drive by servo motor , under the control of voltage sensing relay .This relay sense the output voltage continuously compares with highly stable reference and directs the drive motor to correct the output voltage to the set level.
Indication Specification :
Input :

• Input Supply Ok- Led per Phase Give Green Indication
• Input Over Voltage- Led per Phase Give Red Indication
• Input Under Voltage- Led per Phase Give Amber Indication

output :

• output Voltage Ok- Green Light Indication.
• output Over Voltage â�� Red Light Indication
• Output Under Voltage â�� Amber Light Indication
• Load Ok : Green
• Overload : Red

Control Specification :

• Input Mcb/mccb.
• Output Contractor
• On Push Button
• Off Push Button.
• Audible Alarm with Accept Push Button.