0
Why should current transformers be shunted before opening the secondary winding?
Wiki User
∙ 11y ago
A current transformer's secondary must never be open-circuited. If the instrument fed by a CT needs to be removed, then the secondary terminals must be short-circuited first. This is because a large, and potentially-dangerous, secondary voltage will appear across an open-circuited CT. Normally, a set of links is provided at those terminals for this purpose.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is a shunted winding?
A winding that has several coils shorted together.
Why capacitor allows ac and not dc?
CAPACITOR BLOCKS DC SUPPLY .THERE ARE MAINLY TWO ANSWERS 1.CAPACITIVE REACTANCE Xc=1/( 2*3.1416*F*C) , HERE THE FREQUENCY OF DC SUPPLY IS ZERO .HENCE THE REACTANCE VALUE IS INFINITY .SO IT BLOCKS THE DC SUPPLY. 2.CURRENT THROUGH A CAPACITOR IS PROPORTIONAL TO THE RATE OF CHANGE OF CURRENT . BUT IN THE CASE OF DC SUPPLY, THE RATE OF CHANGE OF CURRENT IS ZERO. HENCE THE CAPACITOR CURRENT IS ALSO ZERO. H.L.kiran
Why earthing is required for electrical installation?
If an electrical device fails it can send current to the housing of the device or to any of the controls that are available to the user. "Earthing" or "Grounding" as we generally call it in the United States, causes that current to be shunted to ground, making life a lot safer for people and other living creatures. In the scenario above, the "hot" wire touching an ungrounded metal box would become a death trap -- anyone touching it could "complete" the circuit and be electrocuted. If the box were grounded, then the hot would be short-circuited and the over-current protection should shut off the power before anyone touches it. Similarly, a broken neutral wire in an ungrounded component could prove lethal to anyone who contacts the component and completes the circuit. Unfortunately,a neutral short to a grounded box would not trip the breaker, like a hot would, but at least there is a "path to ground" through the safety ground rather than through a person.
What is the Difference between shunt capacitor and shunt reactor?
One is a capacitor and one is a reactor. Shunted capacitors are used to raise th voltage in the power system, while shunt reactors are used to lower it. Capacitors are typically installed close to load because of this; reactors are typically on very high power lines where the capacitance of the power line can cause severe overvoltages when loading is light, and at large generating stations.
In what two ways can the speed of a dc motor be varied?
speed of a dc motor can be varied by mainly two methods:- 1)field control method 2)armature control method further , field control method can be divided in 3 parts:- 1)field rhestat control method---speed variation is acomplished by means of a variable resistance inserted in series with shunt field 2)reluctance control method---by changing the reluctance of magnetic circuit by choosing right material.. 3) field voltage control method-requires variable field voltage supply. and armature control method can be divided in 3 parts :- 1)armature resistance control---variable resisitance connected in series with armature 2)shunted armature control. 3)armature voltage control. ------------mrityunjay pandey (kiit university ,btech 2nd year)
Can you bring shunted magnets on an airplane?
no
What is a shunt reactor?
A shunt reactor absorbs reactive power and increases the energy efficiency of any system. It is a small device used for power compensation in high voltage transmission lines and cable systems.
What is a shunted winding?
A winding that has several coils shorted together.
What is shunted?
A conductor having low resistance in parallel with another device to divert a fraction of the current. It is sometimes called a Resistor. The causative diversion of venous blood into oxygenated arterial blood and thus mixing is also a shunt. "shunting"
What is a shunted motor?
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
Why do neurons and some other specialized cells divide infrequently?
because it is :) hope that was helpful ;)
What can cyanosis cause?
Typically oxygen deprivation, but it is common it conditions like hypothermia and hypovolemic shock, where blood is shunted away from the skin to preserve the vital organs. Another cause in neonates is a congenital heart defect known as tetrology of fallot, where venous blood is shunted back through the systemic circulation instead of the pulmonary circulation.
What causes cyanosis?
Typically oxygen deprivation, but it is common it conditions like hypothermia and hypovolemic shock, where blood is shunted away from the skin to preserve the vital organs. Another cause in neonates is a congenital heart defect known as tetrology of fallot, where venous blood is shunted back through the systemic circulation instead of the pulmonary circulation.
Which PINS on the 24 PIN motherboard connector coming from the power supply can be shunted to turn the power supply on?
15 & 16 and 16 & 17
When will your go through puberty but he has one testicale?
Yes, you will go through the process. But it may be a bit shunted as there is only one testis to produce testosterone.
What is mean of Dead Short in Electrical Term?
The positive and negative voltage lines are tied together - OR - the positive line is shunted to ground with voltage appliedImproved AnswerA dead short is a connection with zero/near-zero resistance. It may be applied deliberately in order to perform tests, or, more usually, as the result of a catastrophic failure in some part/component."The positive and negative voltage lines are tied together - OR" - both lines of an a.c. supply are connected together."the positive line is shunted to ground with voltage applied" - OR - the negative line is shunted to ground, etc etc.
Does the stomach gets more blood during exercise?
No, the stomach and intestines get LESS blood during exercise. The blood is needed in the muscles being used and is shunted there instead of digestive organs
