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As current flows through a conductor (wire) an electromagnetic field is produced. A CT is just a coil of wire that surrounds the conductor with the current flow. The EMF produced induces a voltage in the CT and that is sensed by some type of device to determine the amount of current in the primary conductor. Usually used when a large current is fed through the primary and you want to know what that is without measuring it directly. ADDITIONAL: THE MOST NEGLECTED ANSWER SPECIALLY IN DEFINING THE PURPOSE AND USE OF INSTRUMENT Transformers (CURRENT AND POTENTIAL OR VOLTAGE TRANSFORMER) IS PROTECTION.
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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.
Can you saturate a CT with the secondarys shorted?
A CT becomes saturated when the induced secondary voltage is beyond the capabilities of the CT. Yes it is possible, if enough current is forced through the secondary to raise the voltage beyond the CT capability curve. Remember the CT has inherent resistance due to the secondary winding. That said, to saturate strictly based on the CT resistance is unlikely. But it is still theoretically possible.
How do you calculate multiplying factor from ct ratio?
The CT standard output is 5 amps at the rated input amps. The CT will have a marking like 400:5, 100:5, or similar, where the bigger number is the input current that will cause 5 amps to flow in the CT secondary. Divide the span by 5 to get the multiplier. For instance: CT - 400:5 400 / 5 = 80 So, if you measure, say, 3 amps from the CT, the primary current is: 3 * 80 = 240 A
What is cl PS current transformer?
CL of a CT is its accuracy class.. it is an approximate measure of the CT's accuracy. e.g. The ratio (primary to secondary current) error of a Class 1 (CL:1.0) CT is 1% at rated current
Why droop ct used in generators?
Droop CT is used to control load sharing of the reactive power b/w paralleled generators.
Can you work at a daycare at the age 15 in ct?
Yes !
What is the pay for waitress at Applebee's in ct?
I work at Applebees in Orange, ct and I am paid 5.41 per hour plus tips.
How do x-rays and ct scans work?
suck my balls
How old do you have to be to work at Boston pizza in Manchester ct?
dont worry
How can I avoid my work's corporation tax?
My friend was telling me she had to do a ct image but I am not sure what that is ?
States in the central timezone?
ArkansasUTC-06 CT IllinoisUTC-06 CT IowaUTC-06 CT LouisianaUTC-06 CT MinnesotaUTC-06 CT MississippiUTC-06 CT MissouriUTC-06 CT OklahomaUTC-06 CT WisconsinUTC-06 CT
What is ct?
You mean CT. CT means Connecticut the abbreviation for Connecticut is CT get it?
What is the statute of limitations on filing a lawsuit for a work related injury in ct?
Varies by state.
What types of jobs are available on the CT Jobs site?
CT Jobs is a website that has lists of jobs available in Connecticut. They have listings for jobs such as accounting, warehouse work, teachers, drivers, legal practices and much more!
Are tigers illegal pets in CT?
Half of CT,no. Half of CT, yes
Where can a 15 yr old work in hamden ct?
U can work at a grocery store part time like Stop & Shop and Price Rite and Shaws.
Can LPNs work in offices and hospitals in ct?
In some hospitals and some Dr. offices..You just have to keep your eye out
