A wye connection referring to electrical connections is where one end of the three coils of a three phase system are joined together and usually grounded. The three phase supply voltage is then connected to the other ends of these coils. In electrical terminology it is also known as a star connection.
It is a type of starter that allows a motor to be started across the line by starting the motor with a reduced inrush current. The motor is started in a wye configuration until it gets up to speed and then a timer drops the wye contactor out a draws the delta configured contactor in. The motor then operates in a delta wired configuration.
For the same load, delta provides higher current than wye, or star.Wye voltage is 1 / 1.732, or 0.577 that of delta. (1.732 is the square root of 3.) This gives a power of 0.333 for wye, as opposed to delta. (0.5772 = 0.333)This is why (no pun intended) we use wye-delta starters on large motors - it allows them to come up to speed at 1/3 power, before switching to full power on delta.
To terminate a 3 wire wye motor to a 3 phase delta connection you need a 3 phase transformer to convert from delta to wye. Do not lift the common neutral connections inside the motor and rewire for delta, because the voltages will be wrong.
It is not true that another name for the "Y" or "wye-connected" system of polyphase power is the "delta" system. It's called the "star" system.
An open delta connection is a delta connection with one phase removed, but still supplied with three line conductors. An open wye is a wye connection with one phase removed, supplying a three line conductors and a neutral conductor. An open-delta/open-wye is a method of providing a reduced-load three-phase supply using just two single-phase transformers, rather than the preferred method of using three single-phase transformers.
The address of the Wye Grist Mill is: Po Box 277, Wye Mills, MD 21679-0277
Wye Valley was created in 1971.
Wye College was created in 1447.
Ross-on-Wye's population is 10,100.
Wye House was created in 1781.
The web address of the Wye Grist Mill is: www.oldwyemill.org
The phone number of the Wye Grist Mill is: 410-827-6909.
Mark Van Wye is 6' 0".
Old Wye Church was created in 1721.
Wye railway station was created in 1846.
Wye Jamison Allanbrook died in 2010.
Wye Jamison Allanbrook was born in 1943.