High-Voltage Direct Current#Back to back. High-voltage direct current (HVDC) system is an efficient and low-cost method for long-distance power transmission. Its main characteristics are long single-return sending distance, large output capacity, ultra-high voltage...

Current transformer is based on the principle of electromagnetic induction will be the primary side of the large current into the secondary side of the small current to measure the instrument. The current transformer is composed of a closed core and a winding.  Its...

(1) Optical current transformer (Oct) is a current sensor which is made of optical elements, such as optical glass and all optical fibers.  (2) air core coil current transformer. Also known as Rogowski Coil current transformer. Hollow coils are often made by uniformly...

The ratio of current transformer should be selected according to the calculation of primary load current IC.  Current transformer primary side rated current ratio (such as 20,30,40,50,75,100,150,2 A / C) and other specifications, the secondary side rated current is...

The secondary rated capacity of current transformer is larger than the actual secondary load, the actual secondary load should be 25 ~ 100% of the secondary rated capacity. Capacity determines the secondary side of the load impedance, load impedance and affect the...

1) the connection of the current transformer shall abide by the principle of series connection [8] : That is, the primary winding resistance shall be in series with the circuit under test, and the secondary winding resistance shall be in series with all instrument...