Answer / kk

Rotor earth relay have 2
stage. One 4 alarm & other 4
trip. One can check the
bridge o/p voltage(mV) &
compare with comissioning
time value.

Answer / bhuvnesh kumawat

rotor earth fault alarm comes only if our carbon brushes
become earthed. it may be at the time of changing carbon
brushes.

Answer / sujeet kumar

we have to check the status of zero sequence relay..
if its not affected then there is not any earth fault

Answer / alok

rotor both side earth fault wire open and check countinuti
with the help of multimeter at rotor both end.but one side
wire who is grounded must be grounded.

we have 2.2kw,Y,3000rpm motor but 6leads found in TB what happen if we connect in delta?

0 Answers  

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types of arc quenching methodes

2 Answers  

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Why is the earth socket in an electrical plug outlet made thicker and lenghty?

5 Answers  

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How do you protect your appliances from harm in case of neutral failure in a three phase power supply set up.

4 Answers  

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what is the significance of KV & MVA rating of the transformer and how they are related.

8 Answers  

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how to calculate micom relay earth falt time and current sertting

0 Answers  

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how to choose the cable rating for load (KW)? EXAMPLE.50KW load

14 Answers   ACC, NCUI, Polycab, PowerSol, Siemens, SW,

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which type of material is used to transformer laminated core?

6 Answers  

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i am using auto transformer for starting of induction motor to provide reduse voltages...but the principle of a tansformer according to definition"which transform energy to on circuit to another circuit with constant power and constant frequency". so if i am using reduse voltage then current obsely hige because power is same.but we use auto transfarmer for starting of induction motor to give low current.but here according to definition we are giving hige current.

0 Answers  

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why is  use the star and delta connection and difference

1 Answers  

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what is the Connected Load (kW) or Contract Demand (kVA)of mahindra nasik plant??

0 Answers  

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What is the function of RCBO? What are the different sensitivity ratings & each application?

0 Answers   L&T, Legrand,

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