ARRESTER WITH GUIDE STRIPS FOR PROTECTION OF ELECTRIC EQUIPMENT FROM OVERVOLTAGE AT LIGHTNING AND INSULATOR OF POWER LINE EQUIPPED WITH SUCH ARRESTER

摘要

FIELD: electricity.SUBSTANCE: invention presents arrester with guide strips for protection of electric equipment or power line that contains insulating body made of solid dielectric, two main electrodes connected mechanically with insulating body and two or more intermediate electrodes placed between the main electrodes with mutual displacement at least along longitudinal axis of the insulating body; they can be formed between the main and intermediate electrodes of streamer discharge. Intermediate electrodes are placed inside the insulating body and are separated from its surface by insulation layer, at that between the first and second adjoining electrodes there are exposed discharge chambers. At least three discharge chambers are equipped with guide strips made of insulating material fixed to external surface of the insulating body and installed to prevent spreading of plasma cloud formed inside chambers during discharge from one discharge chamber towards the neighbouring discharge chamber by means of plasma cloud streaming to outside air.EFFECT: improving reliability.9 cl, 5 dwg