Estimation of spark protection device's reliability influence on the fire safety of apartment's network with harmonic currents and voltage up to 1 KV

This article analyses the statistical level of fire danger in living premises. Its influence on the reliability of apartments' electrical system is estimated and role of spark protection devices in this process is designated. In addition, a role of harmonic currents in the process of dangerous contact joints detection shown and described. In the conclusion, main requirements for diagnostic of apartments' low-voltage electrical networks are formulated.