Autotransformers are separate power transformers with only one independent winding to step up or down the voltage. The term auto here does not reflect an automated operation but rather signifies the behavior of single-coil acting on its own. These transformers are a perfect alternative to be used in low voltage applications. Keep reading to understanding applications auto variable transformer in different industries
Autotransformers are used in power applications for interconnecting systems running at varying voltage classes from 132 kV to 66 kV for transmission. Special autotransformers with automatic tap-changers are inserted as voltage regulators in long rural power distribution lines to obtain the same average voltage at the end of the line.
Tapped autotransformers are used in audio applications to adjust speakers to constant-voltage audio delivery systems and balance impedance.
Autotransformers are used in railroads to connect the touch wire to the rail and the second supply conductor to improve the available transmitting distance and minimize induced interaction with external equipment.
Testing an Electronic Device after Repairs
After repair, the auto variable transformer manufacturer ensures the electrical unit must be powered to ensure that the replaced components do not ignite. If high voltage is supplied without an inspection, the components will flame out. But using an autotransformer to control the restored machine slowly avoids such destruction. You may also fuel an old amplifier or a radio with the aid of an autotransformer. Electrolytic capacitors need to be reconditioned by adding a decreased voltage to such a transformer.
AC Supply Voltage
An auto variable transformer can conveniently change the output voltage of the AC power supply. The speed can be regulated by adjusting the AC voltage applied to the AC motors. Autotransformers can assist by adjusting the AC voltage and regulating the engines’ speed that drives the fans. The autotransformer may also modify the AC voltage inside a resistance-type heater, thus altering its temperature. The styrofoam and other foams are sliced into a form using a hot wire cutting device. The autotransformer can also monitor the hot wire’s temperature and change it to satisfy the required specifications.
To Compensate For Line Voltage Drop
Long power lines are affected by a voltage drop in high-current applications. Autotransformers may be used to compensate for this voltage failure. Construction of a non-regulated DC power supply of high current – A non-regulated DC power supply of high current may be installed with the aid of a self-transformer. However, this can only be achieved if you are mindful of the safety risks involved with the autotransformer. Autotransformers are attached to AC electricity, making AC voltage directly available, thereby raising electrical shock.
Testing a Repaired Electronic Device2018-05-24-768×288
After repairing a piece of electrical equipment, it is best to slowly power up the unit to prevent burning the replacement components. You may also find several component faults one at a time. Using the Variac to power up the restored device slowly will protect the new parts from being damaged.
The speed of certain types of small AC motors can vary across a narrow range by adjusting the applied AC voltage. The trouble with this application is that the engine’s torque is often decreased, which can cause the fan or engine to stall. It should also be noted that all auto variable transformer manufacturers cannot use this method.