FIELD: electrical engineering; protection of high-voltage insulation of lines and substations from atmospheric and lightning surges. SUBSTANCE: device has separate modules , ribbed shield, and flexible insulating compound filling all joints and connections. Modules are made of glass-reinforced plastic tubes carrying externally threaded metal lugs. Strings of nonlinear resistors are insulated from metal lugs by means of silicone rubber disks. EFFECT: facilitated assembly and shipment; reduced current leakage. 3 cl, 2 dwg
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