# Are high voltage tests on current power transformers recommended and if not why?

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Hi-pot and megger tests are common to check the insulation on transformers, motors, refrigeration compressors, etc. They help check the condition of equipment to avoid a future falure. High votage test are conducted in current transformers by shorting the seconday and earth,can apply 3 times the rated voltage
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# How the magnetizing current test take on power transformer?

connect 3 - phase supply to transformer primary winding.....keep transformer secondary winding open...... apply 3-phase voltage i.e.400v ac, and measure the amount of current

# Why is electrical power transmitted in high voltage and not high current?

For any given load, the higher the supply voltage, the lower the resulting load current. A lower load current results in an acceptable voltage drop along the line, that conduc

# Why electrical power is transmitted in high voltage not in high current?

The wire used to transmit the electricity has a specific resistanceper unit length. Since power is equivalent to I^2 * R, the powerloss in the wire becomes greater as the curr

# Why During transmission of power it is transformed as high voltage rather than high current how is this possible as current and voltage are directly proportional?

\nVoltage and current are actually inversely proportional to one another. The formula P=IV is what you need to look at here, where P is Power, V is voltage, and I is current.

# Why you need the current transformer and voltage transformer?

The High voltage transformer allows the microwave to run using the magnetron. With ony 120v to the magnetron, the cooking will be like with a 50-100W microwave. The high curre

# Can a current transformer be used as a voltage transformer?

Current Transformers cannot be used as a voltage transformers, they are used to measure large electrical currents. They are manufactured in the shape of a dough nut, round wi

# What is current voltage transformer?

A current transformer is a transformer that takes a ratio of primary current, and delivers this ratio to the secondary. The voltage across the primary will be insignificant, a

# Which transformer raises the voltage high and lower the current for transmission?

A step-up transformer.

# Can be used current transformer as voltage transformer?

Yes Anyways You need thin copper wire, the thinner the more voltage output. Tear the secondary out of the transformer (The thicker wire) and save it for another project. Now w

# Why high-voltage current measurement using a common meter is not recommended?

A common meter cannot withstand high voltage current if it is not rated to do so it will be damaged due to excessive current

# How does a transformer change voltage and current?

A transformer works through mutual induction , whereby a changing current in one coil induces a voltage into a second coil. The transformer winding (coil) connected to the s

# How do you take high voltage test for LV winding of transformer?

H.V.test carried out by Keeping L.V.side short cktd. & supply will be provide to h.V. side

# Why is high voltage testing important for electrical power apparatus?

because it needs to explode

# Does a step-up transformer step up the voltage or the current or the power?

A step-up transformer steps up voltage.

# What does a transformer do to current and voltage?

A transformer is used to step up (increase) or step down (decrease) an alternating voltage with very little loss of energy.

# Why in transformer voltage is high and current is low?

An ideal transformer (one with no losses, and not a bad approximation for the real thing) has an input power equal to its output power. In simple terms, since power is the pro

# Why is a high dc voltage applied to a transformer for testing?

A high dc voltage would be applied to test the insulation betweenthe windings.