| 摘要 |
FIELD: electricity. ^ SUBSTANCE: device comprises high-nonlinear varistors connected between protected object and earth, and also commutators that shunt some high-nonlinear varistors. At the same time some high-nonlinear varistors and commutators are combined in blocks with electric joints and insulating washers, providing, under working voltage, serial connection of all high-nonlinear varistors and shunting of some high-nonlinear varistors by commutators in overvoltage mode. At the same time all blocks are installed in a single column with non-shunted part of high-nonlinear varistors installed in insulation body. ^ EFFECT: increased reliability of operation and increased service life of device. ^ 2 dwg |
