| 摘要 |
FIELD: electrical engineering. SUBSTANCE: load selector for stepping switches built around stepping transformer has two movable contacts; first movable contact is connected to at least one vacuum switch designed to close load-current circuit and second one, to switch meant to close transient-current circuit; each movable contact travels independently and so that one of them moves slowly and other one, in step, and their sequence is independent of direction of switching operations. EFFECT: improved design. |
