Emergency drive device for an A.C. elevator
Described is an emergency drive device for an A.C. elevator which comprises; and alternating current motor for driving a car, an inverter for converting a direct current into an alternating current of variable frequency and supplying the resulting alternating current to said alternating current moto...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English |
Published |
27.11.1984
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Described is an emergency drive device for an A.C. elevator which comprises; and alternating current motor for driving a car, an inverter for converting a direct current into an alternating current of variable frequency and supplying the resulting alternating current to said alternating current motor, and an emergency power source connected across input terminals of the inverter with the same polarity as said input terminals and designed to supply direct current power to the drive device. |
---|---|
Bibliography: | Application Number: US19820410598 |