Company News
Sep 28,2021
Sep 28,2021
Sep 28,2021
Sep 27,2021
Sep 27,2021
Sep 27,2021
What is the difference between a current transformer and a zero sequence current transformer?
The current transformer is different from the zero sequence current transformer. The zero sequence current transformer is used to detect the zero sequence current. Generally, all three live wires pass through the inner hole of the transformer, and the vector sum of the three-phase current, that is, the zero sequence current, is measured.
Sep 27,2021
Current transformer_ring network cabinet special transformer professional manufacturer!
Current transformer is a kind of commonly used equipment. The function is to convert a large primary current into a small secondary current through a certain transformation ratio for protection, measurement and other purposes. For example, a current transformer with a ratio of 400/5 can convert an actual current of 400 amperes into a current of 5 amperes.
Sep 27,2021
Secondary current transformer cannot be open-circuited
The secondary side of the current transformer is connected in series with the current coil of the measuring instrument to form a closed loop. Due to the small impedance, the secondary voltage is very low. However, if the secondary current transformer is open, the current transformer is actually equivalent to a rising transformer. If it is open for the secondary current, the secondary current is lost, the balance of current is lost, and the magnetic flux of the iron core increases sharply, resulting in a great increase in the secondary voltage, which can rise to hundreds of volts or even thousands of thousands of volts, it is not only easy to cause electric shock to people, but also may break down the insulation of secondary lines and electrical components, which is a very dangerous situation.
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