GE IC660EBD025 Control module
Brand ABB Color Standard Application Industrial height 391mm rated current 541mA
Protection level IP45 Suitable for the motor power 128KW Application Site Power Industry BOM Number GJR2391500R1220 Power industry HIEE401782R0001 Part Number IC660EBD025
Applicable pipe 2 Whether imported is weighing 4.39 kg can be sold nationwide
GE IC660EBD025 Control module
We know that the current transformer, that is, the CT primary winding west number is less, the primary winding is in series in the measured line when used, and the secondary winding has more than four numbers, and the measuring instrument and the following
Electrical equal-current coils are used in series, and the impedance of current coils such as measuring instruments and relays is very small, so CT is close to the short-circuit state during normal operation. CT secondary electricity
The size of the flow is determined by a single current,
The magnetic potential generated by the secondary current balances the magnetic potential of the primary current. If the secondary open circuit, its impedance is infinite, secondary current
Equal to zero, its magnetic potential is also equal to zero, you can not balance the magnetic potential generated by a current, then a current will all act on the excitation, so that the core is seriously saturated.
Magnetic saturation increases the iron loss, the CT heats up, and the insulation of the CT coil is burned out due to overheating. It will also produce residual magnetism on the iron core, increasing the transformer error. grievous
Because of magnetic saturation, the sine wave of alternating magnetic flux becomes trapezoidal wave, and the secondary coil will induce a high voltage when the magnetic flux changes rapidly, and its peak value can be
Up to several thousand volts, such a high voltage acting on the secondary coil and secondary circuit, there is a serious threat to people and equipment. So CT is at all times
It is not allowed to open the secondary side.
GE IC660EBD025 Control module
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