FIELD: transport, electrical engineering.
SUBSTANCE: invention relates to the devices designed to automate the posts of AC contact circuit sectionalisation incorporating transverse capacitive compensation (CC). The post automatic control circuit incorporates additionally a unit designed to cut off the CC for a short time and to define the availability of short-circuit condition in cut-off CC. Given the short-circuit condition, CC is cut off to check up on the availability of discharge current in the CC current transformer. In case there is no the aforesaid current, the sectionalisation post switches cut-off is inhibited.
EFFECT: higher post reliability thanks to eliminating excessive cutting off of post switches at short-circuit conditions in contact circuit.
1 dwg
