At relatively low fault currents, the work on the arc chamber (J e i dt) is higher in a current-limiting circuit breaker. ... Recently, Mitsubishi introduced a self- renewable or permanent-power fuse (PPF). ... Parallel resistance FIGURE 8.51 Wiring diagram of a permanent power fuse (PPF) in series with a standard circuit breaker.
|Title||:||Design Fundamentals for Low-Voltage Distribution and Control|
|Publisher||:||CRC Press - 1986-12-08|