A. Product Overview

The COSMIC MS 101SVS is a single-phase input and single-phase output servo voltage stabilizer designed for applications where the incoming power supply frequently rises or falls beyond the safe operating range of connected equipment.

The stabilizer combines electronic control circuitry, a variable transformer, a buck-boost transformer and a servo motor. These components work together to continuously regulate the incoming voltage and maintain a stable output voltage.

The single-phase air-cooled range is suitable for loads from approximately 5 kVA to 20 kVA. It supports common output voltage requirements such as 200 V and 230 V AC, depending on the selected configuration. Its air-cooled construction helps dissipate heat without requiring transformer oil, making it suitable for indoor commercial and light industrial installations.

Main Features

• Single-phase input and single-phase output
• Servo-based automatic voltage regulation
• Air-cooled construction
• LCD display for system monitoring
• Automatic and manual operating facility
• Copper-wound dimmer
• Buck-boost transformer
• Correction speed greater than 20 volts per second
• Efficiency greater than 98 percent
• Response time below 10 milliseconds
• No significant effect on load power factor
• No waveform distortion
• Continuous input and output voltage monitoring
• Protection against abnormal voltage and electrical faults

B. Working Principle

The COSMIC MS 101SVS continuously monitors the incoming single-phase voltage through its electronic control circuit.

When the input voltage becomes lower or higher than the required level, the control circuit detects the difference between the actual voltage and the required output voltage. It then sends a control signal to the servo motor.

The servo motor adjusts the position of the variable transformer, also known as the dimmer. The corrected voltage from the dimmer is supplied to the buck-boost transformer. The buck-boost transformer either increases or decreases the voltage as required.

This correction process continues automatically until the output reaches the desired voltage level. The stabilizer therefore provides regulated power even when the incoming electricity supply is unstable.

The complete operating sequence can be understood as:

Fluctuating AC input → Voltage sensing circuit → Servo motor → Variable transformer → Buck-boost transformer → Regulated AC output

The product provides a response time of less than 10 milliseconds and a voltage correction speed greater than 20 volts per second.

C. Why It Is Used

Voltage fluctuations can cause unreliable operation, overheating, unexpected shutdowns, reduced efficiency and premature failure of electrical equipment. Sensitive machines and electronic systems require voltage within a safe operating range to function correctly.

The COSMIC MS 101SVS is used to:

• Maintain stable voltage during high and low input conditions
• Protect equipment from input overvoltage and undervoltage
• Protect connected loads from output overvoltage and undervoltage
• Reduce equipment malfunction caused by unstable power
• Improve the reliability of machines and electronic systems
• Minimise production interruptions and operational downtime
• Support accurate operation of testing and measuring instruments
• Reduce unnecessary repair and replacement expenses
• Improve the service life of connected equipment
• Monitor input voltage, output voltage, frequency and system conditions through the display

The stabilizer also includes protection provisions for short circuits and abnormal voltage conditions.

D. Suitable Buyers

The COSMIC MS 101SVS is suitable for businesses, institutions and facilities that operate single-phase equipment in areas affected by unstable voltage.

Engineering Units

Suitable for engineering workshops using testing equipment, control systems, small machinery and precision electrical instruments.

CNC Machine Users

Can be considered for compatible single-phase CNC machines, controllers and supporting equipment that require regulated voltage.

Pharmaceutical Units

Suitable for laboratory instruments, testing systems, packaging equipment and other compatible single-phase pharmaceutical equipment.

Hospitals and Laboratories

Useful for diagnostic equipment, laboratory instruments, analysers and other sensitive single-phase electrical systems.

Printing and Packaging Companies

Suitable for printing machines, labelling equipment, packaging machines and electronic control panels.

Textile Units

Can support compatible single-phase textile machines, control systems and auxiliary equipment.

Food Processing Units

Suitable for processing, weighing, packaging, inspection and control equipment operating on single-phase power.

Commercial Buildings and Offices

Useful for computers, servers, communication systems, office equipment and other important electrical loads.

Air-Conditioning Applications

Can be selected for compatible single-phase air-conditioning equipment after checking the operating load and starting current.

Plants and Factories

Suitable for factories requiring regulated single-phase power for selected machinery, control systems and supporting equipment.

Frequently Asked Questions

1. What is the COSMIC MS 101SVS Servo Stabilizer?

The COSMIC MS 101SVS is a single-phase input and single-phase output air-cooled servo voltage stabilizer. It automatically corrects variations in the incoming voltage and supplies regulated AC voltage to connected equipment.

2. What does single-phase input and single-phase output mean?

It means the stabilizer accepts a single-phase AC electrical supply and delivers a regulated single-phase AC output. It is intended for equipment that operates on single-phase power.

3. What capacity range is available?

The official product information lists the single-phase input and single-phase output air-cooled range from approximately 5 kVA to 20 kVA. The correct capacity must be selected according to the total connected load and starting current.

4. How does the servo stabilizer correct voltage?

The stabilizer detects changes in the incoming voltage and operates a servo motor. The motor adjusts a variable transformer, while the buck-boost transformer increases or decreases the voltage to maintain the required output.

5. Is the COSMIC MS 101SVS air-cooled?

Yes. It uses an air-cooled construction to manage the heat produced during operation. It does not depend on transformer oil for cooling.

6. What is the efficiency of the stabilizer?

The official specifications indicate an efficiency greater than 98 percent under specified operating conditions.

7. Does it have an LCD display?

Yes. The stabilizer includes an LCD display for monitoring parameters such as input voltage, output voltage, frequency and system error information.

8. What protection features are available?

The listed protections include input undervoltage, input overvoltage, output undervoltage, output overvoltage and short-circuit protection. Some protections shown on the common product page relate specifically to three-phase models, so the final protection configuration should be confirmed for the selected single-phase rating.

9. Does the stabilizer provide automatic and manual operation?

Yes. The product information lists automatic and manual operating facilities, allowing the system to be operated according to installation and maintenance requirements.

10. Can it be used for CNC machines?

Yes, it can be considered for compatible single-phase CNC machines and CNC control equipment. The required stabilizer capacity should be calculated according to the machine load, starting current and input voltage range.

11. Can it be used for medical and laboratory equipment?

Yes. It can be used with compatible single-phase medical devices, laboratory instruments, analysers and testing equipment that require regulated voltage.

12. Does a servo stabilizer provide power backup?

No. A servo stabilizer regulates the available mains voltage but does not normally provide battery backup during a power failure. An online UPS or inverter system is required when backup power is also needed.

13. How should the correct kVA capacity be selected?

Capacity should be selected by considering the total equipment load, power factor, starting current, future load expansion and incoming voltage variation. Additional capacity margin is generally recommended instead of operating the stabilizer continuously at its maximum rating.

14. What information is required before purchasing?

The buyer should provide:

• Required load in watts, kilowatts or kVA
• Equipment name and application
• Minimum and maximum input voltage
• Required output voltage
• Starting current or motor load details
• Operating duration
• Installation location
• Required quantity

15. Where is this stabilizer commonly used?

It is commonly considered for engineering units, CNC machinery, pharmaceutical facilities, air-conditioning plants, printing and packaging machines, textile mills, food-processing units, commercial buildings, plants and factories.