star delta starter?

1 ⤊

at which tapping the auto transformer behaves like a star delta starter

2007-11-13 12:52:16 · 2 answers · asked by chandra p 1 in Science & Mathematics ➔ Engineering

2 answers

Star delta starting is equivalent to autotransformer starting at voltage equal to 1/square root of 3 or 57.7%.

2007-11-13 23:18:45 · answer #1 · answered by EE68PE 6 · 1⤊ 0⤋

A bit unclear.
Are you trying to set up an autotransformer/ relay
combination to create a stepped voltage single
phase starter?
Be careful, you will draw high current in the 'start'
mode.

2007-11-13 18:37:44 · answer #2 · answered by Irv S 7 · 0⤊ 0⤋