HIGH-VOLTAGE VACUUM SWITCH Russian patent published in 2003 - IPC

FIELD: high-voltage circuit-opening devices. SUBSTANCE: vacuum switch designed for installation on draw-out components of metalclad switchgear cabinets has three poles and frame with switch shaft horizontally mounted under the latter. Electromagnetic operating mechanism is coupled with switch shaft by means of control rod and is disposed under poles. Making and breaking coils of operating mechanism are mounted on frame; closure interlocking mechanism is assembled of clamp, rod, and spring. EFFECT: enhanced reliability due to simultaneous closing ability of contacts in arc-control chambers of switch poles. 2 cl, 8 dwg