Small inductive current switching condition for switchgear
Current Chopping and Reignition in Circuit Breakers Handling Small Inductive CurrentsWhen a circuit breaker (CB) opens or closes shunt reactor banks or unloaded power transformers, it typically switches small inductive currents, usually several tens of amperes, with a 90-degree lag relative to the voltage phase. However, these currents are often prematurely forced to zero by a phenomenon known as current chopping. This can result in chopping overvoltages and subsequent reignition overvoltages, w