Delta connection is used in Distribution system. Which connection is used for step up transformer? Most commonly delta-star connection is used as a step up transformer, but as at the secondary side we can have 3-phase, 4-wire system, this connection is also used for distribution system. How do you size a transformer? A volt motor has a load amperage of 5 amps. Multiply volts times 5 amps this equals VA now lets multiply the percent start factor.
Take times 1. The required transformer would be a VA or. How does a transformer create a neutral? The 'hots' are connected to the ends of the wire, and the 'neutral' is connected to the middle. The wire is then wrapped into a coil wound around the transformer core. Current flowing through the primary side of the transformer creates an oscillating magnetic field in the transformer core. What happens if one phase of a 3 phase transformer fails?
When a three phase motor looses one of the phase supply voltage then it is called Single Phasing. Single Phasing a case when any one phase out of the three phases fails. The motor will run but would not be able to drive rated load. The uneven torque results in abnormal noise and vibration in motor. How does a transformer work? Delta connection is make at primary side because in delta low harmonics 3rd,5th and 7th produce as compare to star while at secondary side star connection is use to provide 3 phase 4 wire system or we can say that getting singale phase from 3 phase.
Hense secondary winding is a srat winding. We get neutral on secondary side for distribution perpose. In Delta connection it requires only three wires to transfer on power but in star it requires 4 wires to transfer the same amount on power so we are using delta at primary side.
In delta side the zero sequence is current also zero. Post New Answer. December 28, at am. Karan says:. January 14, at am. January 17, at pm. January 23, at pm. Dear, It is already given in the blog…Please read blog carefully. Jude says:. March 4, at pm.
August 8, at am. Portable generator watts says:. October 7, at pm. Amir says:. March 3, at pm. June 7, at am. August 26, at am. October 3, at am. October 24, at pm. Sir, I had a doubt on Selection of transformer configuration Generator supply from V to 33KV, a transformer of a different configuration can be selected. October 31, at am. November 9, at am. N says:. December 9, at pm.
Sir , I have used 3 different v ac load. Susanta Mondal says:. June 4, at pm. Thabelo says:. June 13, at am. I like to know how star-delta connected or delta-star connected transformers. Parthasarathy says:. August 26, at pm. April 26, at am. Amna Ali Butt says:. June 1, at pm. At what condition star delta and delta star connection have same fault current?
August 27, at am. Nikhil Hari says:. September 4, at am. Hi, Could u please help me to calculate the HV current during an unbalance in LV side of the transformer. Thanks and Regards,. Dr Sanjay R Joshi says:. December 31, at pm. Ronak Bera says:. August 31, at am. Amritpal Singh Sidhu says:. Deepak Agrawal says:.
August 30, at pm. Parthasarathy M B says:. September 26, at pm. Bishop Yusuph Mika mbiaji says:. October 15, at pm. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:.
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