Variable Auto Transformer / Variac / Dimmerstat Dealers

Continously Variable Voltage Auto Transformer is the most effective device for stepless, breakless & continous control of AC voltage & therefore for various parameters, dependent on AC voltage. These Variable Voltage Auto Transformers, consists of a single layer winding on a toroidal silicon-steel core. As the control knob is rotated, a carbon brush traverses the winding, tapping off a portion of the total voltage across the winding. The brush is in continous contact with the winding. The discrete voltage increments obtained as the knob is rotated are always less than the voltage between turns. Since the brush spans more than one turn, the change in voltage is practically continuous. As output voltage is continously variable, Variable Voltage Auto Transformers are rated in terms of current that can be drawn from the output.

  Variable Auto Transformer will be having round Toroidal Core made from CRGO Lamination duly annealed to reduce the iron Losses and for the good regulation as voltage drop on load is low due to low resistance of conductor & low leakage flux of toroidal core. Toroidal core will provide stepless, beakless, smooth continuous control linearly proportional to angular rotation. Toroidal core is having high efficiency as no load and full load losses are very low and negligible wave from and power factor distortion due to simple transformer action and excellent short time overload capacity. As Toroidal core is having no sharp edge the breakage of insulation and copper wire can be prevented. the toroidal is wound from metal tape wound on to a mandrel under closely controlled tension, then annealed and treated to develop fully the required magnetic characteristic. It has low electrical resistively, no hysteresis loss, a completely linear B-H Curve and an infinitely high saturation points. this permits the easiest direction of magnetization to be utilized.    

The variable autotransformer that we offer to our clients are manufactured under the constant surveillance of our team of experts using technologically advanced methodologies. Our team of engineers designs this power transformer as per the specifications provided by the clients. These transformers are capable of accepting energy at a particular voltage and then transferring it at other voltage. This further allows the usage of the equipment at a safe voltage.

‘M/s ARDISONS ASSOCIATES’, is a leading Variable Autotransformer manufacturer and supplier based in Punjab. We manufacture and supply world class variable auto transformer which has a movable carbon sliding on a silver plated commutator by either manual or by motor, give an output voltage from zero. The variable auto transformer provided by us confirms to IS/5142/69, IS/5142/69 standards. Features :- Rugged constructionHigh efficiencyExcellent regulationLow magnetizing currentNo wave form distortionLoad capacity Smooth and linear out putSilver plated commutatorLow operating torqueCarbon depositionsDouble wound auto

Single Phase High Current Air Cooled Variable Autotransformers each of 200A rating (Radiotone make) We specialize in the manufacturing of Single Phase High Current Air Cooled Variable Autotransformer (colloquially known as Variac) in 100A /200A /400A /600A /800A /1200A ratings. Three Phase units are built by using such three stacks & motorizing them on common shaft. This is a substitute for oil cooled units which are less preferred, for safety reasons, in many hazardous applications. Single Phase High Current Air Cooled Variable Autotransformers (colloquially known as Variac) are very easy to maintain & service. Enclosed units are also available.

Advantages : Continuous, Step less and Break Less Voltage variation Negligible waveform & Power factor distortion Short Time Overload Capacity Renote operation possible SPECIFICATIONS Load Capacities 28 amps to 600 Amps in Single • and 28 Amps to 1000 Amps in Three • 28 Amps, 40 Amps, 60 Amps, 100 Amps, 200 Amps, 400 Amps, 600 Amps, 800 Amps, 1000 Amps ) Phase Single • and Three • Toroidal Coils with CRGO Steel Sheet Core Frequency 50 60 Hz. Voltage Variation Capability 0 - 270 V A.C in Single • and 0 - 470 in Three • Cooling Method AN for 28 Amps in Single• and Three • Oil Cooled for 40 Amps to 600 Amps in Single • Oil Cooled for 40 Amps to 1000 Amps in Three • Drive Mechanism Hand Driven with Knob Motor Operated with Step Syncronised Motor Compliance to test Standards IS 5142. Oil Confirming to IS 335 Copper Conductors Compliant to IS 13730 - 34 BASIC FEATURES Open Type for Panel Mounting Portable Type for Table Mounting M.S. Tank with Oil Immersed and Pressed Steel Radiators. Double varnished Toroidal Coils. Voltage Indicator Dial. Knob or Wheel for Voltage Variation Connector Plate or Bus Bars in cable box. High Quality Carbon Brushes.

Our packing system is systematized in such a manner that we can handle even bulk packaging with ease. Moreover, our packing experts take care of the customized as well as standard packing demands of the clients. With the aid of our smart logistics network, we can easily furnish quick and massive requirements of the buyers

We specialize in the manufacture of high current rated coils. The commutator surface of our coils is machine processed and hence very uniform and smooth. This is very important for proper collection of current by the carbon brushes thus reducing the heat generated. Our standard coils are 100 Amp, 150 Amp, 200 Amp. Using these coils we manufacture oil-cooled variautos from 100 Amp 3 Ph to 1200 Amp 3 Ph capacity (415 V input and 0-470 V variable output). In high current rated models we use multiple coils with properly rated balancing coils to achieve the rated current. Based on the calculations of cooling area appropriate no. of radiators &fins  are used. These variautos are generally motorized with geared mechanism. We also cater to tailor-made requirements.

We are the manufacturer and supplier of Variable Voltage Auto Transformer which is a technologically advanced device supplies 0 to 270 volts voltage in single phase and 0 to 470 in three phases. Our transformers deliver continuous voltage without any fluctuation. This output is accomplished through turning the knob in less than a full circular rotation. unit range single phase unitthree phase unit availability enclosed motor driven open ministat soil cooled technical specifications capacity : 2amps, 4amps, 8amps, 10amps, 15amps, 28amps, 40amps, 50amps, 60amps, 100amps, 150amps and 200amps. salient features compact in sizeanti-corrosive resistant to heat withst and operational temperatureeconomical ideal for getting variable dc voltage for electroplating setsvarying the speed of dc motorsmanufacture of voltage stabilizer up to 600 k varegulate and control the temperature of furnaces and ovens developing high capacity floating rectifiers for telephone exchanges fabricating h.v. Test sets, meter test benches, oil test sets, etc.

The viscometer consists of a chrome plated copper plated copper bath, with a drain valve and a central tube to receive the test cup and to position the stirrer, and is mounted on a stand with leveling feet. Stirrer has a curved shield and is provided with an insulated handle, thermometer socket and swivel support for the valve. Supplied complete with 10 mm cup and ball valve or 4 mm cup and ball valve as per the model required. The following models are available. Standard Tar Viscometer, Electrical Heating with Immersion Heating Elements and Dimmerstat for controlling the temperature. Suitable for operation on 220 V, 50 Hz, single phase, AC supply. Complete with 10mm & 4 mm Cup and Valve.

Continuously variable voltage auto transformer, protected type. Comprises a torridly wound transformer with a continuously variable output voltage 0 - 260 volts AC. Steplessly under full load. Input 220 to 240 volts AC, 50 Hz. In stout metal case mounted on a metal base with mains cable.

 We are instrumental in offering the finest quality of Variable Auto Transformers at nominal rates on the market. Being the leading manufacturers and suppliers of Variable Auto Transformers, we process the Variable Auto Transformers using cutting-edge technology and latest machinery. The Variable Auto Transformers are quality-tested, and can be purchased in various specifications. The major selling point of the Variable Auto Transformers is that they have a sturdy construction, and made up of Crgo Core, Copper, and Alloy. Not only are these Variable Auto Transformers easy to install, and durable, they promise noise-free operation and low maintenance cost. The Variable Auto Transformers can be availed at Rs. 40,000/piece, and we are based in Delhi, India.   Build : Sturdy, durable Installation Process : easy, hassle-free, convenient Material : Crgo Core, Copper, Aloy Durability : Highly durable, damage-resistant   Features : Easy to install Low maintenance needs Durable Noise-free operation