Lighting transformer coupling transformer transformer core shape civil Xinquan transformer factory

 10 kV line at the exit of short-circuit current is generally small, especially in the rural power substation, often away from the power system impedance is large. For the same line at the exit of the short-circuit current size will vary with the size and operating systems and different ways. With the continuous expansion of system scale, 10 kV system short-circuit currents with larger, TA can reach several hundred times the rated current time, some of the original system to the normal operation becomes smaller than the TA may saturation; on the other hand short circuit fault is a transient process, short circuit current contains a large number of non-periodic component, and further accelerate TA saturation. When 10 kV short-circuit due to TA saturation current is induced on the secondary side will be very small or close to zero, the protective device tripping, fault removal from the tie breaker or main transformer backup protection, not only to extend the time to failure , will expand the scope of the fault, the impact of reliability, but also a serious threat to the safe operation of the equipment. Civil Rights Xinquan Special Transformer Factory's official website: http: //www.xqbyq.com Sales Tel: 0378-3689563 15937858399 (Zhang) Welcome to inquire, discuss business!