short-circuit currents because of their currentatime (IT) or delay characteristic curves. ... Short circuits in low-voltage dc circuits usually are caused by mechanical damage to wire insulation during installation, removal, or replacement, ... the overcurrent protective device isolates the fault from the power source so that nonfaulted circuits can continue working in a normal manner. ... The opening mechanism in a circuit breaker with a delay 51 trip characteristic will unlatch in as little Fig.
|Title||:||DC Power System Design for Telecommunications|
|Author||:||Whitham D. Reeve|
|Publisher||:||John Wiley & Sons - 2006-10-25|