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How do you know if a three phase motor's winding is shorted?

You use a megger. This allows you to check what the condition of the insulation of the motor windings are. An ohms check on each phase should be an easy way if it reads OPEN then there's your bad phase. Otherwise there are diffrent types of 3 phase motors, could be the brushes, commutator, sliprings, many many things.


Do capacitors have internal resistance?

1. The capacitor has Lead resistance in series with the capacitor2. Since most capacitor use Dielectric and they have a leakage resistance and it is parallel to the Ideal Capacitor.


Do batteries have resistance?

Yes they do have a resistance. Even though a battery is a voltage source it has some thevenin resistance. Every lead plate and cell of sulfuric acid, will have a small resistance. The thevenin resistance is equivalent or sum of all those resistances.


Why must a fuse or Switch never be fitted to the secondary of a CT circuit?

Secondary of a CT should never be opened to avoid damage to CT. Fuse or switch may lead to opening of CT secondary accidentally.


How do you conect 3 wire rtd with xtr101?

Three lead RTD is an industrial standard when a bridge arrangement is used. The advantage of this design is it distributes resistance due to the connecting leads equally to the adjacent arms of the bridge making lead resistance insignificant and avoids any error due the same. When it comes matter of using xtr we need to add lead resistance with the R4 as given in the datasheet of texas. This can be done by using a variable resistance for R4 and do change the R4 such that the output current becomes 4mA for lower bound of range.. (ie) (their is no need to use the 3 lead RTD for accuracy same accuracy can acheived here with 2 lead RTD. just by having a variable resistor R4)

Related Questions

What resistance should a spark plug lead have?

14-16Kohm / metre


Is lead edible?

Lead is highly toxic and should never be eaten.


How do you know if a three phase motor's winding is shorted?

You use a megger. This allows you to check what the condition of the insulation of the motor windings are. An ohms check on each phase should be an easy way if it reads OPEN then there's your bad phase. Otherwise there are diffrent types of 3 phase motors, could be the brushes, commutator, sliprings, many many things.


What method should never be used to thaw food?

Thawing food in hot water should never be used as it can lead to bacterial growth and foodborne illness.


How should you make out if you're a girl have never made out and are nervous?

Let the guy lead you(;


How does pencil lead taste?

Pencil lead should never be consumed as it can be poisonous. If accidentally ingested, seek medical attention immediately.


What should the ohmmeter read when the lead probes are touched together?

When the lead probes of an ohmmeter are touched together, the ohmmeter should read close to zero ohms, indicating a short circuit or very low resistance between the probes.


Who lead the massive resistance movement?

cheese


Should people be treated as stocks?

No. Lead people, manage numbers, never confuse the two.


What happens when a boy a girl?

First, You should NEVER make the first move!! But if you do it will probably lead to sex.


What has the author John Peter Mitchell written?

John Peter Mitchell has written: 'The electrical resistance of zone refined lead and lead alloys at low temperatures' -- subject(s): Lead alloys, Physics Theses, Metals at low temperatures, Lead, Electric resistance 'The resistance of lead in the temperature range 1 to 4 degrees K' -- subject(s): Physics Theses


What is swamping resistance?

(Electronics) Resistor placed in the emitter lead of a transistor circuit to minimize the effects of temperature on the emitter-base junction resistance and its resistance is called swamping resistance.