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because autotransformer used for both purpose step up and step down but dustrubution need step down in case of this autotransformer not used for dustrubtion purpouse
AnswerBecause an autotransformer (not 'auto transformer') does not provide electrical isolation between the secondary and primary.
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∙ 11y ago
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Can you use ordinary transformer in place of auto transformer?
yes we can place auto transformer in place of original transformer
How do i convert from 380 volts to 220 volts?
If these are the exact voltages that you need you will need an auto transformer to obtain these voltages. If these voltages are nominal voltages and are of a three phase four wire configuration, the 220 voltage can be obtained from the three phase legs to the neutral (ground) connection. The equation to use is 400/1.73 = 231 volts.
How many coils does a autotransformer have?
only single coil is use as a primary and secondary coil in a auto transformer.
What type of transformers are used to step down a voltage for general use and what type of systems are they classified as?
The transformer you describe is being used as a step-down transformer, and is classified as an electrical machine. The transformer could either be a mutual transformer, consisting of two, electrically-isolated coils, or an auto-transformer which uses a common coil between its primary and secondary circuits.
Conversion of 2-winding transformer into auto transformer?
Yes, you can use a mutual (2-winding) transformer as an autotransformer, by connecting the two windings in series. For example, if you have a 240:120 V transformer, connecting the two windings in series and supplying the 240-V winding with 240 V can give you a secondary voltage of 360 V. But you must take into account the polarity of the transformer, and realise its capacity will change.
Can you use ordinary transformer in place of auto transformer?
yes we can place auto transformer in place of original transformer
How do you use distribution transformer as temporary power supply to residential housing?
A distribution transformer IS the term used to describe the utility transformer which supplies a residence.
What is the Use of distribution transformer?
A transmission transformer steps the voltage up to a very high value so electricity can travel long distances on transmission lines from the power plant to a city or area with low loss. A distribution transformer steps the high voltage back down to a level that can be used for local distribution and use by businesses and homes.
How do i convert from 380 volts to 220 volts?
If these are the exact voltages that you need you will need an auto transformer to obtain these voltages. If these voltages are nominal voltages and are of a three phase four wire configuration, the 220 voltage can be obtained from the three phase legs to the neutral (ground) connection. The equation to use is 400/1.73 = 231 volts.
How do you start a motor without a starter?
By the use of auto transformer and bridge rectifier we can start dc motor.
How many coils does a autotransformer have?
only single coil is use as a primary and secondary coil in a auto transformer.
Is current transformer is a distribution transformer?
In transmission lines there is a massive current, we use CT to make this current measurable i.e. it steps down the current but DT is used to step down the voltage
What is current choking in transformers?
The "current choking" means that the maximum capacity of a transformer is not being utilized. To prevent it from ever reaching its maximum capacity a lower value of over current protection or fuse is installed. The purpose is to use larger capacity transformer available but using smaller distribution and cables just sufficient for the application to lower the installation cost.
Why you cant use step up transformer for step down purpose?
You can, providing you observe the voltage ratings of the windings.
What is the purpose of a transformer?
It steps down voltage by moving the iron core spacing. Mostly using on high current welding transformer. Easy to achieve changing output voltageand does not need to use high power selector to switch voltage
What are the common uses of inductors and transformers?
Inductor Use : i) As a Choke in Tubelight Circuit ii) In electronic filter circuits. Transformer Use : i) To step up / down voltage in Generetion, transmission , & distribution system ii) In Power Supply Units (Ac as well as DC) iii) Instrumentation ( for Voltage , Current measurement purpose)
What type of transformers are used to step down a voltage for general use and what type of systems are they classified as?
The transformer you describe is being used as a step-down transformer, and is classified as an electrical machine. The transformer could either be a mutual transformer, consisting of two, electrically-isolated coils, or an auto-transformer which uses a common coil between its primary and secondary circuits.
