H - Electricity – 02 – H
Patent
H - Electricity
02
H
318/11, 318/84
H02H 7/08 (2006.01) B60L 3/00 (2006.01) B60L 3/04 (2006.01) B60L 7/10 (2006.01) H02P 3/02 (2006.01)
Patent
CA 1207020
ELECTRIC MOTOR FAULT AND DYNAMIC BRAKING PROTECTION SYSTEM ABSTRACT OF THE DISCLOSURE Electric traction motors for rapid transit cars provided a first saturable reactor for sensing the current imbalance between the input and output leads of traction motor circuit, a second saturable reactor for sensing the current imbalance between the branches of the motor circuit, a current sensor in the excitation winding of each reactor to sense the current increase therein during a fault, a latching relay and a stepping relay both responsive to the output of each current sensor. A mode relay responsive to the dynamic braking control of the transit car connects either the sensor for the first reactor or the sensor for the second reactor to the latching and stepping relays depending upon the operating mode of the car. The latching relay functions to both disconnect the traction motors from their voltage supply and disable the car dynamic braking system upon a fault in either mode of operation. A motorman's reset button is provided to reset the latching relay after a fault to energize the motors and braking system. The stepping - 2 -
487061
Gartner Joseph J.
Meredith & Finlayson
LandOfFree
Electric motor fault and dynamic braking protection system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric motor fault and dynamic braking protection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric motor fault and dynamic braking protection system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1331699