relay; while conductors 81, 82, 66 connect the normally disengaged contact 29 of said relay through the switching relay winding 73 to the other pole 83 of said source, whereby when the detector relay 26 is deenergized, the by-pass switch 71, 12 is opened and the coding relay solenoid ...
The protective relay, upon operation, reduces the speed of the car and thus the load on the generator driving motor, enabling the car to be brought to a landing. Thereafter the driving motors are disconnected from the supply lines and can not be restarted until the open phase condition is ...
With this configuration, by using an auxiliary switch element such as a high conductive relay or the like, connected in parallel to the bi-directional semiconductor switch element, it is possible to considerably increase the capacity of a load current. When the opening and closing unit is turned...