SINCE 1996
PROTEKG POWER ELECTRONICS PRIVATE LIMITED
+91-9824072721 | 9328920010 | 9898564343 | 8511001112
GSTIN: 24AAJCP4321K1ZF
Variac & Dimmer Manufacturer in India
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ProtekG is a manufacturer and supplier of Variable Autotransformers, Variac Transformers and Dimmer Transformers designed for smooth and precise adjustment of AC voltage. Our variable autotransformers are available in a wide capacity range from 04 Amp to 400 Amp, making them suitable for laboratory, industrial, testing, research, manufacturing and voltage-control applications.
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A Variac or variable autotransformer provides continuously adjustable output voltage from a single-phase or three-phase AC supply, depending on the configuration. With robust construction, precision-wound copper windings and reliable voltage adjustment mechanisms, ProtekG Variable Autotransformers are designed for applications where controlled and adjustable AC voltage is required.
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Whether you need a single-phase Variac, three-phase Variac, manual variable autotransformer, industrial dimmer transformer or customized high-current variable transformer, ProtekG can provide solutions according to your electrical and application requirements.
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A Variable Autotransformer, commonly known as a Variac, is an adjustable transformer used to vary AC output voltage. Unlike a conventional fixed-ratio transformer, a variable autotransformer incorporates an adjustable contact mechanism that allows the output voltage to be changed smoothly over its designed operating range.
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The operator can adjust the output voltage using a rotary knob, handwheel or suitable motorized mechanism. This makes the Variac particularly useful for applications requiring controlled voltage variation, testing, calibration, equipment development and laboratory experimentation.
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ProtekG manufactures variable autotransformers in different electrical configurations and current capacities, from 04 Amp to 400 Amp, subject to application and design requirements.
Variable Autotransformer Manufacturer in India
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As an industrial electrical equipment manufacturer, ProtekG focuses on providing dependable power-control solutions for industrial and commercial applications.
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Our Variable Autotransformers are designed for customers looking for a Variac manufacturer in India capable of supplying standard as well as application-specific voltage-control solutions.
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The equipment can be configured according to the customer's electrical requirements, including current capacity, voltage range, number of phases, mounting arrangement and control method.
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A Variac transformer is widely used where the AC supply voltage needs to be adjusted rather than simply stepped up or stepped down by a fixed ratio.
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Typical applications include:
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Servo Voltage Stabilizer Manufacturing: A stabilizer dimmer (commonly known as a Variac or variable autotransformer) is an essential testing and regulating device used to manually or automatically adjust AC voltage. In stabilizer manufacturing and repair, technicians use a dimmer as a variable power source to simulate high and low input voltages.
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Industrial Testing: Used for controlled voltage application during electrical equipment testing and inspection.
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R&D and Engineering Laboratories: Suitable for research, development, prototype testing and experimental electrical systems.
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Electrical Test Benches: Provides adjustable AC voltage for testing components, instruments and electrical assemblies.
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Manufacturing Industries: Can be integrated into manufacturing and production equipment requiring adjustable AC voltage.
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Calibration & Testing: Useful for controlled voltage input during testing and calibration procedures, subject to the requirements of the equipment being tested.
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Motor & Equipment Testing: Variable AC voltage can be used in controlled test setups for motors and electrical equipment.
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Educational Laboratories: Suitable for electrical and electronics laboratories where adjustable AC voltage is required for experiments and demonstrations.
Industrial Dimmer Transformer Manufacturer-
Manual Variable Autotransformer
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ProtekG also manufactures industrial dimmer transformers / dimmer-type variable autotransformers for applications requiring controlled AC voltage.
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Unlike simple electronic dimming arrangements, an electromechanical variable autotransformer provides voltage adjustment through a physical winding/contact mechanism. This makes the technology useful in applications where a controlled variable AC supply is required.
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Depending on the application, ProtekG can provide manual or customized variable-voltage transformer arrangements.
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Manual Variacs use a rotary knob or handwheel mechanism to adjust the output voltage.
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The operator can gradually increase or decrease the voltage according to the requirements of the connected equipment or test setup.
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Manual Variable Autotransformers are particularly suitable for: Laboratory test benches, Electrical testing,
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R&D facilities, Educational laboratories, Equipment development, Production testing, Voltage adjustment applications, servo voltage stabilizer manufacturing
Single Phase & Three Phase Variable Autotransformer
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ProtekG Variable Autotransformers can be designed for single-phase and three-phase applications, depending on the electrical requirement.
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Single-phase Variable Autotransformers are commonly used in laboratories, test equipment, R&D systems, electrical panels and single-phase voltage-control applications.
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Three-phase Variable Autotransformers are suitable for industrial test systems and applications where controlled three-phase AC voltage is required.
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The appropriate configuration should be selected according to the input supply, output requirement and connected load.
A key advantage of a Variac is its ability to provide an adjustable AC voltage output, making it particularly useful for testing, experimentation and controlled electrical applications.
FAQs – Variac Transformer / Variable Transformer
1. What is a Variac?
A Variac is a commonly used term for a variable autotransformer that allows adjustable AC output voltage.
2. What is the difference between a Variac and a dimmer?
Both terms can refer to equipment used for variable AC voltage control, although the exact construction and application can differ. A Variac generally refers to an adjustable autotransformer using a movable contact over a winding.
3. What capacity Variable Autotransformers does ProtekG manufacture?
ProtekG offers Variable Autotransformer solutions from 04 Amp to 400 Amp, subject to voltage, phase and application requirements.
4. Does ProtekG manufacture three-phase Variacs?
Yes, three-phase Variable Autotransformer configurations can be provided according to the required electrical design.
5. Can I get a motorized Variac?
Motorized operation can be incorporated for applications requiring remote or automated voltage adjustment, depending on the design requirement.
6. Can a servo voltage stabilizer be customized?
Yes. Servo stabilizers can be configured according to requirements such as kVA rating, input voltage range, output voltage, phase configuration, cooling method, correction requirements, protection features, and monitoring arrangements.
7. Where are Variable Autotransformers used?
They are commonly used in laboratories, R&D, electrical testing, servo voltage stailizer manufacturing, calibration, test benches, motor testing and controlled AC voltage.
8. Does a Variac provide electrical isolation?
A standard autotransformer does not provide galvanic isolation between input and output. If isolation is required, an appropriate isolation transformer should be considered.
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