Kratki spojevi

Short circuits

Kratak spoj je spoj provodnika preko male impedanse između tačaka koje su obično pod različitim naponom, a njegov proračun daje struje koje teku u mesto kvara, po kojima se biraju prekidači i oprema. Ovde su veličine struje kratkog spoja po IEC standardu, nesimetrični kvarovi preko simetričnih komponenti, struje kratkih spojeva u razvodnim postrojenjima, trofazni kratak spoj sinhrone mašine i procena mesta kvara u distributivnoj mreži.

A short circuit is a connection through a small impedance between points that are usually at different voltages, and its calculation gives the currents that flow into the fault, by which breakers and equipment are chosen. Here are the short-circuit quantities of the IEC standard, unbalanced faults by symmetrical components, short-circuit currents in substations, a synchronous machine’s three-phase short circuit and locating a fault in a distribution network.