This is the second part of a two-part series on the methodologies used to find the short circuit current duties of circuit breakers and fuses. The first part, Short Circuit Current Duties of Circuit ...

Reviewing a typical protective device trip curve (click here to see Fig. 2), it can be divided into three regions. First is the “instantaneous region,” which is the region intended to interrupt ...

At 18:36 pm on Nov 13, following the issuance of instructions from the dispatching center, the circuit breaker 31322 of the No 5 capacitor in the Taole 220 kilovolt substation in the Shizuishan area ...