The difference between the current transformer and voltage transformer

current transformer secondary short circuit,but will not open; Can open circuit voltage transformer secondary,but shall not be short circuit;2) relative to the secondary side of the load,a mini electric motor small internal resistance and voltage transformer can be ignored,can think of the voltage transformer is a voltage source; While current transformer of a resistance is very big,so that can be thought of as a current source internal resistance is infinite.3) voltage transformer normal work of magnetic flux density is close to saturation value,magnetic flux wholesalemotor.blogspot.com density decreased when fault.

Current transformer magnetic flux electric motors 12 volt density is very low in normal working conditions,and short circuit due to the primary side become large short-circuit current,the magnetic flux density increases greatly,sometimes even more than saturated value. Current transformer in electric power

system is an important part of a device,the principle of which is according to the principle of

electromagnetic induction and manufacturing. It's a little coil number of turns,5kw permanent magnet generator usually adopt single-turn coil,namely a copper or a copper platoon. Take mainly secondary coil measuring instrument or relay coil. Current transformer secondary side can not open,when the secondary side open,a side is mainly used for excitation current,this will be induced in the secondary side of high voltage,so as to endanger the safety of the secondary equipment and personal can also cause a current transformer burned.