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What happens when unequal voltage ratios of transformers used in parallel operation of transformers?
You cannot connect transformers of different voltage in parallel. This is because circulating currents will be set up between the two transformers that may exceed their rated currents.
What is circulating current loss?
mass
What are the limitations of current transformers?
low accuracy
Can two transformers with different vector groups be connected in parallel?
Not unless you want to see some cool pyrotechnics! Circulating current will be induced between the two transformers if this is done. This current magnitude will be limited by the phase angle difference and the impedance of the two transformers. It is likely this current will be high enough to cause protective devices to operate regardless of loading on the secondary - fusing, overcurrent relays, sudden pressure relays, etc. If the impedance of the transformers is high enough, and the phase angle is fairly small (few degrees), LTC tapping may occur (some paralleling schemes use the circulating current between transformers to determine correct paralleled tap values). If they are "close enough" in phase angle, no serious problems will occur, other than (possibly) a small derate due to a small amount of circulating current.
Type of transformers used in gas insulated substation?
Current transformer and voltage transformer . This transformers are actually measuring instruments which measures the quantity of current and voltage coming out of the substation.
What are the functions of current transformers and the difference between current transformers and voltage transformers?
To sense the current flow across the current transformers and to monitor the current ratings. In current transformers no voltage variations occurs. but in voltage transformers it is mainly used to increase or decrease the voltage value.
Who would need to utilise current transformers?
A current transformer is used for measurement of alternating electric currents. Current transformers, together with voltage transformers are known as instrument transformers.
What is eddy current loss in transformers?
Eddy current loss in Transformers is because of the eddy currents formed in the body of the magnetic core.Whenever a conductor(iron core) exposed to a changing magnetic field a magnetc field produced in the body of the magnetic core.That induce a circulating current in it.Which is called eddy current.In the case transformer it is loss.But it is useful in other purposes.
Can we drive relays by current transformers?
Yes, certain types of relays can be activated by current transformers.
What is circulating current?
mass
Are Transformers used in circuits with Direct Current?
No. Transformers are used in circuits with Alternating Current. Transformers work on the principle of a "changing" magnetic field inducing a current in a conductor, and you don't get that "changing" field with Direct Current.
Acids conduct electric current by forming what?
By direct from the manufacturer! Current & Potential Transformers
What happens when unequal voltage ratios of transformers used in parallel operation of transformers?
You cannot connect transformers of different voltage in parallel. This is because circulating currents will be set up between the two transformers that may exceed their rated currents.
What is circulating current loss?
mass
Current Transformers Manufacturers?
Macroplast Transformers is a leading Current Transformers Manufacturers in India. Current transformers are devices that transform higher current value to lower current value. Current transformers provide galvanic isolation from the voltage on the primary winding while simultaneously creating a power signal that has been converted to a standard level, which in turn permits the use of standard measurement instruments and relays. For more info contact us.
What is the circulating current of warmer material?
teeth
Can a current transformer be used for current amplify?
transformers cannot amplify!
