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Blog Entry# 1796984
Posted: Apr 09 2016 (23:27)
31 Responses
Last Response: Apr 10 2016 (14:57)
31 Responses
Last Response: Apr 10 2016 (14:57)
Updates related to DC to AC Conversion of Last DC Section in Indian Railways
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11 Public Posts - Sat Apr 09, 2016
17 Public Posts - Sun Apr 10, 2016
yes, you simply have to reverse the connection of any two phases.
For instance if a 3 phase I.M. Is, when connected in R-Y-B sequence rotates in forward direction, in R-B-Y sequence it will rotate in opposite direction. This, in practise (i.e. In industries/locos etc) is done by means of contactor Which has connections in both R-Y-B and R-B-Y sequence, with a switch to select which sequence is desired (and an interlock to prevent maloperation.)
For instance if a 3 phase I.M. Is, when connected in R-Y-B sequence rotates in forward direction, in R-B-Y sequence it will rotate in opposite direction. This, in practise (i.e. In industries/locos etc) is done by means of contactor Which has connections in both R-Y-B and R-B-Y sequence, with a switch to select which sequence is desired (and an interlock to prevent maloperation.)
2 Public Posts - Sun Apr 10, 2016