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A step-up transformer needs more turns on the secondary windings than on the primary windings to increase the voltage.

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15y ago

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What are causes of voltage drop in transformer?

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 product of voltage and current, then for a given value of power, as the voltage goes up, the corresponding current will go down.


Does a 3 phase motor starter with a 120 volt coil need a neutral to the coil?

Usually for this type of installation there is a control transformer installed in the starter enclosure. The primary of the transformer is the motors line voltage and the secondary is the control voltage which is usually 120 volts. In Canada the control transformer needs fusing on the secondary side of the transformer. In the US the transformer needs fusing on the primary and secondary sides of the transformer. The secondary side of the transformer's terminals are labeled X1 and X2. The X2 lead is grounded to the starter's enclosure. From this point out the wire is then termed the circuit's neutral wire. This wire then connects to one side of the magnetic starters draw in coil. Yes, 120 volt coil would require a neutral, this could be derived from the control transformer if it has one or from an external source.


Can you pass 60Hz current to 50Hz transformer?

Yes that's fine provided the voltage is the same in both cases.But if a 60 Hz transformer is run on 50 Hz it might run slightly warmer than usual so it might need to be derated by 20% or so.CommentIt might be worth while pointing out that it's the voltage that needs to be derated by around 20% when a 60-Hz transformer is operated at 50 Hz.


What is the difference between isolation transformer and ferromagnetic transformer?

An isolation transformer is usually a ferromagnetic transformer. The question needs to be framed more usefully.


What is the need of form factor in transformer?

transformer is a static device hence it needs form factor.

Related Questions

When is a step up transformer used in relationship as to when a step down transformer is used?

If the voltage needs to be increased from a lower voltage to a higher voltage a step up transformer is used. If the voltage needs to be lowered from a higher voltage to a lower voltage a step down transformer is used.


Why is a set up transformer needed in a stereo or tv set?

A stereo or tv set needs a step-up transformer because a step-up transformer increases the voltage of an appliance and a stereo or and a tv set needs a high voltage.-------Semper Fidelis(ADC)----------


What size ground wire for a 30 kva transformer?

The size of grounding wire is based on the amperage output of the transformer. The voltage of the transformer needs to be stated. Without this voltage a calculation can not be made. Amps = Watts/Volts = 30000/?.


How many low voltage 20w lights can you connect to a 10Va transformer?

The low voltage needs to be stated of the 20 watt lamps.


What are causes of voltage drop in transformer?

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 product of voltage and current, then for a given value of power, as the voltage goes up, the corresponding current will go down.


What is the difference between a transformer and a rectifierwhich are found in a PC power supply?

The rectifier is what changes your AC into DC that the computer can use. Transformer raises or lowers the voltage. So you have 110 volts AC coming into your computers power supply. The Rectifier circuit in there changes the AC voltage to DC voltage but it is still to high for the computer use. The transformer lowers that voltage down to the various voltages that your computer needs


Why the tap settings are in the secondary of the tap changing transformer?

Usually the voltage at the secondary is the voltage that needs to be controlled. It makes sense, then, to directly control this voltage output instead of controlling the primary.AnswerIt is usual for the tap-changing mechanism to be incorporated into the high-voltage side, regardless of whether the transformer is a step-up or a step-down type. This is because the current is lower on the h.v. side of the transformer and the contacts can be smaller.


Will using an AC transformer with higher amps damage a kids toy?

Using a transformer with a higher capacity that is needed by the device connected to it will not damage the device. This is as long as the voltage the device needs is the same as the transformers output.


How do you change operating voltage of metal halide lamp from 240 to 120?

The lamp needs to be rated for the voltage applied to it. The fixture in which the lamp is installed also needs to be rated for the voltage. So, it is not a matter of changing the lamp, it is a matter of having the fixture and lamp that are properly rated for the voltage that you are applying to it.


How do you convert 480v to 120v?

to derive 120 volts from 480 volts you have to use a transformer, based on your needs. If you needed 100 amps at 120 volt single phase you would need a 12kva transformer. This is just an example.


What is the best way to select and install a 300 watt low voltage transformer for outdoor lighting?

To select and install a 300 watt low voltage transformer for outdoor lighting, first calculate the total wattage of your lighting fixtures to ensure it does not exceed the transformer's capacity. Choose a transformer with a wattage rating higher than your total wattage needs. Install the transformer in a dry, well-ventilated area close to a power source, following the manufacturer's instructions for wiring and mounting. Regularly check for proper functioning and safety.


Do you need a step down transformer to run a 208 volt steam table on 240 volt feed?

Yes a transformer should be used. The steam table needs its correct voltage otherwise on 240 volts it will operate over its given specified nameplate wattage. A 208 volt heating element run off of 240 volt will have an output increase by 75 percent.