Rapid transit system transient voltage suppression apparatus

Details Rapid transit system transient voltage suppression apparatus Rapid transit system transient voltage suppression apparatus

H - Electricity

02

H

323/10, 317/11

H02H 9/08 (2006.01) H02H 7/08 (2006.01) H02H 9/00 (2006.01) H02M 3/315 (2006.01) H02M 1/00 (2006.01)

Patent

CA 1122647

22. 48,149 ABSTRACT OF THE DISCLOSURE A transient voltage suppression apparatus is disclosed for application in conjunction with a power supply line to protect the chopper thyristor in the transit vehicle propulsion motor control apparatus, wherein an electrolytic capacitor is provided to absorb the inductive stored energy of that power supply line in the zener mode of operation of that capacitor upon the occurrence of a system fault condition involving that power supply line.

336548

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