IEEE 551-2006 PDF Download

In order to calculate short-circuit currents in power systems for use in industrial facilities and commercial buildings, the IEEE 551-2006 standard offers instructions. The standard includes protection device sensors, passive equipment that carries short-circuit currents, and interrupters like circuit breakers and fuses as part of its coverage of power system equipment connected to short-circuit currents.

The standard's scope emphasizes how crucial it is to keep power systems' short circuits under control. Service interruptions, manufacturing delays, equipment damage, and significant safety risks for workers can all result from unchecked short circuits. The standard places a strong emphasis on the necessity of swiftly removing faults from the power system, and circuit protection devices like circuit breakers and fusible switches perform this function. The standard also draws attention to the possible harm that can result from heat produced by short-circuit currents, including insulation breakdown and circuit fusion.

The standard's objective is to offer knowledge that aids in the design of electric power circuits that are suitably rated and protected against short-circuit or fault currents.