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What type of protection scheme is employed for protection of a large form of transformer against shortcircuit with neat sketchs discuss the working principle?
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∙ 12y ago
You've got to be kidding! The answer would require a chapter in a textbook, and not a response in this forum.
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∙ 12y ago
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Why earthing transformer is zigzag connection?
A zigzag transformer is used in connection with 3 phase and is made up of 6 coils connected in a "Y" manner. Each leg of the "Y" is made up of a coil on a different phase leg of the transformer. The neutral formed by the zigzag connection is very stable. Therefore, this type of transformer, or in some cases an auto transformer, lends itself very well for establishing a neutral for an ungrounded 3 phase system. Many times this type of transformer or auto transformer, lends itself very well for establishing a neutral for an ungrounded 3 phase system. Many times this type of transformer or auto transformer will carry a fairly large rating, yet physically be relatively small. This particularly applies in connection with grounding applications. The reason for this small size in relation to the nameplate KVA rating is due to the fact that many types of grounding auto transformers are rated for 2 seconds. This is based on the time to operate an overcurrent protection device such as a breaker. Zigzag transformers used to be employed to enable size reductions in drive motor systems due to the stable wave form they present. Other means are now more common, such as 6 phase star.
What is Solkar Current Differential?
A transmission system is employed with pilot relaying schemes for protection. Pilot is a channel which transmits the information from one end of the transmission line to the other.The information is normally an electrical quantity that is measured at both the ends. The different pilots used are wire pilot, carrier-current pilot and microwave pilot. Solkar system ( reyrolle) is a scheme employing the wire pilot. It is commonly called the balanced voltage or opposed voltage scheme. It operates on the principle of current differential protection. Further details in Protection and Switch gears by Badri Ram and Viswakarma.
Why zigzag connection in transformer is required?
A zigzag transformer is used in connection with 3 phase and is made up of 6 coils connected in a "Y" manner. Each leg of the "Y" is made up of a coil on a different phase leg of the transformer. The neutral formed by the zigzag connection is very stable. Therefore, this type of transformer, or in some cases an auto transformer, lends itself very well for establishing a neutral for an ungrounded 3 phase system. Many times this type of transformer or auto transformer, lends itself very well for establishing a neutral for an ungrounded 3 phase system. Many times this type of transformer or auto transformer will carry a fairly large rating, yet physically be relatively small. This particularly applies in connection with grounding applications. The reason for this small size in relation to the nameplate KVA rating is due to the fact that many types of grounding auto transformers are rated for 2 seconds. This is based on the time to operate an overcurrent protection device such as a breaker. Zigzag transformers used to be employed to enable size reductions in drive motor systems due to the stable wave form they present. Other means are now more common, such as 6 phase star.
What is the function of oil temperature gauge in transformers?
Normally, in Transformers due to coil the temperature often rises up to a certain point.To minimise the temperature during transformer operation,specially engineered oil is used.To indicate the level of oil, a gauge is employed.
Which topology type is employed by 10base2?
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What is the definition of differential relay and how does it function?
In power transformer, a differential relay is a relay that verifies the balance of current between the primary and the secondary face of a transformer. It is also employed in other components of the power system like in protecting cables. Differential relay is also called a unit protection.
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Sterilization of instruments. Heat is the usual principle employed.
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Dialyisis
The principle employed in the operation of an artificial kidney is what?
dialysis
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Archimedes' principle is the statement that says buoyancy exists, and explains how to calculate its magnitude. The principle is applied extensively in the maritime shipping and hot-air balooning industries.
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True.
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According to the Federal Ministry of Food, Agriculture and Consumer Protection, 53% of Germany's land is being used for farming.
Why earthing transformer is zigzag connection?
A zigzag transformer is used in connection with 3 phase and is made up of 6 coils connected in a "Y" manner. Each leg of the "Y" is made up of a coil on a different phase leg of the transformer. The neutral formed by the zigzag connection is very stable. Therefore, this type of transformer, or in some cases an auto transformer, lends itself very well for establishing a neutral for an ungrounded 3 phase system. Many times this type of transformer or auto transformer, lends itself very well for establishing a neutral for an ungrounded 3 phase system. Many times this type of transformer or auto transformer will carry a fairly large rating, yet physically be relatively small. This particularly applies in connection with grounding applications. The reason for this small size in relation to the nameplate KVA rating is due to the fact that many types of grounding auto transformers are rated for 2 seconds. This is based on the time to operate an overcurrent protection device such as a breaker. Zigzag transformers used to be employed to enable size reductions in drive motor systems due to the stable wave form they present. Other means are now more common, such as 6 phase star.
What is Solkar Current Differential?
A transmission system is employed with pilot relaying schemes for protection. Pilot is a channel which transmits the information from one end of the transmission line to the other.The information is normally an electrical quantity that is measured at both the ends. The different pilots used are wire pilot, carrier-current pilot and microwave pilot. Solkar system ( reyrolle) is a scheme employing the wire pilot. It is commonly called the balanced voltage or opposed voltage scheme. It operates on the principle of current differential protection. Further details in Protection and Switch gears by Badri Ram and Viswakarma.
What is the name of the principle employed by early astronomers to determine the distances to celestial objects using the displacement of the apparent position of an object viewed along two different?
parallax
What piece of New Deal legislation employed young men in projects designed to protect the environment?
The New Deal Environmental Protection Group (NDPG)
