Technical Data

Introduction An arc suppression coil, also known as a Petersen coil or ground-fault neutralizer, is a tuned reactor connected between the neutral point of a power system and earth. Its purpose is to compensate for the capacitive earth-fault current produced by the network during a single-line-to-ground fault. By reducing the current that sustains the fault […]

An engine valve spring is a helical compression spring. It closes the poppet valve and holds it sealed against its seat. In addition, it keeps the valve train in contact with the cam profile across the full speed range. Because the engine loads it once per revolution, it is a high-cycle fatigue component by definition