SERVO CONTROLLED VOLTAGE STABILIZER

• Air Cooled Single and Three Phase
• Oil Cooled Three Phase.

GUARDIAN SERVO CONTROLLED voltage stabilizers are normally used for very sensitive loads. The load bearing capacity is very high and there are models ranging upto 500 KVA. Depending on the load type and also the duration of operation – GUARDIAN SERVO CONTROLLED voltage stabilizers are further classified as Air cooled and Oil cooled types and are available in single and three phase type application. Single Phase Air Cooled Servo Controlled Voltage Stabilizers are used for load applications below 15 KVA. Air cooled models are available for three phase load applications below 60 KVA. Above 60 KVA all the models of GUARDIAN Servo Controlled Voltage Stabilizers are oil cooled.

SELECTION OF A MODEL OF SERVO CONTROLLED VOLTAGE STABILIZER : While selecting a model of Servo Controlled Voltage Stabilizer - care should be taken to select an appropriate or suitable model – as the equipments connected are very sensitive and critical. Hence, you need to know the exact specified load of the equipment that is to be protected. In case of multiple loads – you need to total up the individual loads. After determining the total load that may be applied – you need to add at-least 20 to 30 % additionally – as safety factor. This is being done to provide an allowance - such that the servo controlled voltage stabilizers – which are on many occasions made to operate continuously – operate smoothly and efficiently. Also this safety factor allowance in capacity provides for accommodating the future growth requirements.

In India the standard residential Single Phase Electricity supply voltage is 220 V (AC) at 50 Hz Frequency. The standard Three Phase Electricity supply Voltage is 415 V (AC). Generally, for household appliances and gadgets the acceptable input voltage range is in the range of 200 to 250 Volts. However, very Sensitive and Critical application equipments or machineries have very limited input voltage range – which is normally considered a steady 220/230 Volts (in single phase) and 400 / 415 Volts (in Three Phase) applications with a range of 1 or 2%.

After determining the load capacity of the servo controlled stabilizer, the operating voltage range of the servo controlled stabilizer based on the incoming voltage is to be selected. If the fluctuations are large – then wider ranges of incoming voltage need to be selected. Kindly refer to the voltage ranges chart for selecting an appropriate model.

INSTALLATION AND COMMISIONING OF SERVO CONTROLLED VOLTAGE STABILIZER: The Servo Controlled Voltage Stabilizer – above 15 KVA rating needs special care and attention while installing and commissioning. Hence, the installation needs to be generally done by a trained technical staff. The commissioning of the servo controlled voltage stabilizer could be done only if the electrical input and output receptacles and terminations are provided by the buyer. The cables and the terminations are to be of the required current rating – conforming to applicable safety standards.

APPLICATION OF SERVO CONTROLLED VOLTAGE STABILIZER: GUARDIAN Servo stabilizers protects from Voltage Fluctuations by providing precise voltage and increases the life and also enhances the operating efficiency of sensitive Electrical/ Electronic Equipments/Gadgets/Machineries.

GUARDIAN Servo Controlled Voltage Stabilizers are being used extensively for :

• Medical and Analytical Instruments / Equipments,
• Health care Monitoring & Life support Equipments
• Industrial Equipments
• Processing Industries Equipments
• CNC machines
• Textile knitting machines
• Elevators and Escalators
• Office Equipments
• Quality Control, Testing and R & D Equipments
• Overall Voltage Stabilisation for Home, Office, Factory, Hospital, Retail outlets, Shopping Malls, Laboratories, Hospitals, Clinics etc