Consider two wire configurations with the same line to line voltage. Would the insulation level be the same for the delta configuration as for the ground voltage for a Y configuration? If so how come?
2007-04-05 14:51:08 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
No the delta wiring configuration requires insulation rated for the phase-to-phase voltage. A grounded-wye voltage requires insulation rated for the phase-to-ground voltage.
Wye: 277/480 volt, 3-phase, 4-wire needs 300 volt insulation.
Delta: 480 volt, 3-phase, 3-wire needs 600 volt insulation on the cables.
2007-04-05 15:13:14 · answer #1 · answered by Thomas C 6 · 3⤊ 0⤋
i did no longer desire to dig it up however the configuration you're searching for is as Dan defined an "Open Delta configuration". i think Dan had the voltages incorrect. You do have a "wild leg" . All 3 stages could be 120V to floor, yet between the two directly linked stages the voltage could be 208. yet around the open end of the Delta the voltage could be 240 volt. application companies used to apply this configuration for residential centers because of the fact it basically calls for 2 windings.
2016-12-08 19:37:37 · answer #2 · answered by ? 4 · 0⤊ 0⤋