what's transient & sub- transient reactance means?
Answers were Sorted based on User's Feedback
Answer / steven karris
These terms appear in the calculation of fault currents.
Common sources of fault currents are rotating machines,
i.e., motors and generators. An important factor in
detrmining the magnitude of a fault current is a variable
reactance that changes rapidly after the initiation of the
fault until it reaches a steady state.
Subtransient Reactance, usually denoted as X''d (X double
prime sub d), is the reactance used to determine the
current during the first cycle after the occurance of the
fault. In about 0.1 second this reactance increases to the
level known as Transient Reactance usually denoted as X'd,
and after 0.5 to 2 seconds it increases to the leven known
as Synchronous Reactance and denoted as Xd, and this
determines the fault current after a steady condition is
reached.
Is This Answer Correct ? | 205 Yes | 27 No |
Answer / babak turkan
subtransient reactance in percent normally for induction motors is 16.7 5
Is This Answer Correct ? | 19 Yes | 29 No |
What does the term power factor shows?
What is EHT tariff or Power factor Tariff ????
what is the different bitween ETP & WTP
please tell me the all the spcications of the 100MW 11KV HYDEL POWER PLANT SPECICATIONS
why all selected supply voltage are multiple of 11
What do you mean by eddy current loss?
how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt
Electrical breakdown strength of an insulating material depends on............?why because?
for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?
what is neutral grounding resistor?
what will be the efficiency off x'mer during no load test and during short circuit test
1 Answers GPSC Gujarat Public Service Commission,
why transmission line towers are longer than communication line towers?