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What Is The Difference CT and PT?
A CT is used to measure current, and is NOT referenced to ground, and has very low primary impedance. A PT is used to measure voltage, is referenced to ground, and has a much higher impedance (since it is referenced to ground).
What is the difference between Ohms and Ohms CT in impedance of an audio transformer?
The difference in between Ohms and Ohms CT is that in Ohms CT it has CT at the end.
What is ct coil?
It means Current Transformer is used for measurement of electric currents, together with voltage transformers
Is ct step up or step down?
'CT' is used to designate current transformers, and 'PT' is used to designate potential transformers. A current transformer provides a ratio of primary current to the secondary. A potential transformer provides a ratio of primary voltage to the secondary. A power transformer (step up or step down) resembles a PT more than a CT.
What happen if measuring ct is used as protection ct?
This can be done, but is usually not done because a metering CT is made to be very accurate at expected load current levels. A protection CT is made to be accurate at fault current levels (which is often significantly above load current). If the CT is too small, and has too small of a ratio, the CT will likely saturate, which will skew the results the protective device expects to get. An example: a metering CT may have a ratio of 100:5 (made for 100A load current, which will produce 5 amps secondary current). Fault current levels may be ~10,000A. You'd expect the secondary output of a perfectly linear CT to be 500A. One way resistance of the cable connecting the protective device to the CT may be on the order of .5 - 2 ohms. Ignoring the resistance of the CT and connected devices, secondary voltages would reach 250 - 1,000 volts for a phase fault, and 500 - 2,000 volts for a ground fault. The biggest CTs may be rated for 800 volts output below the knee point, so this 100:5 CT would clearly saturate. The real output current would likely be on the order of 150A at the most. ...And the above is ignoring any DC offset, which would cause the CT to saturate at unpredictable AC current levels.
Where is the Cheney Hall Foundation in Manchester Connecticut located?
The address of the Cheney Hall Foundation is: , Manchester, CT 06040-5922
Side effects of contrast dye for ct scan?
Side effect of cervical ct scan?
Where is 5P20 CT used and where is Class PS CT used?
5P20 CT give more accuracy than PS class CT. 5P20 cant be used in unit protection. Class PS CT is a protection class ct. It is used for differtial proction,distance (UNIT)proction.
Which is the ray used in ct scan?
The ray used in CT scans is X-Ray!!!
Where is the Indiana Basketball Hall Of Fame Foundat in New Castle Indiana located?
The address of the Indiana Basketball Hall Of Fame Foundat is: 1 Hall Of Fame Ct, New Castle, IN 47362-2941
Which equipments in a a cancer hospital applys photoelectric effect?
X-Ray machine,CT(computed tomography)... are used in cancer hospitals for taking the image of cancer tumor,by the principle of PHOTO ELECTRIC effect.
What gas has an effect on lime water?
ct of carbon dioxide on limewater
Where is the old saybrook middle school?
in old saybrook , CT behind town hall on main street
Where is the Alaska Sports Hall Of Fame in Anchorage Alaska located?
The address of the Alaska Sports Hall Of Fame is: 6740 Samuel Ct, Anchorage, AK 99516-6908
Where is the Academy Hall Museum in Rocky Hill Connecticut located?
The address of the Academy Hall Museum is: 785 Old Main Street, Rocky Hill, CT 06067
Where is the Americas People Hall Of Fame in Beavercreek Ohio located?
The address of the Americas People Hall Of Fame is: 2535 Kenmont Ct, Beavercreek, OH 45434-7001
Where is the Southeast Connecticut Hall Of Fame in Waterford Connecticut located?
The address of the Southeast Connecticut Hall Of Fame is: 10 Sandy Hollow Dr, Waterford, CT 06320-2600
