What is over fluxing in transformer?
Answer / krishan chand tyagi
Transfomer overfluxing can be result of
1. Overvoltage
2. Low system frequency
A transformer is designed to operate at or below a maximum
magnetic flux density in the transformer core. Above this
design limit the eddy current in the core and nearby
conductive components cause overheating which within a very
short time may cause severe damage.The magnetice flux in
the core is proportional to the voltage applied to the
winding divided by thhe impedence of the winding.The flux
in the core increase with either increasing voltage or
decreasing frequency.During starrtup or stardown of
generator connected transformers, o following a
loadrejection, the transformer may exeperience an excessive
ratio of volts to hertz, that is, become overexcited.
Is This Answer Correct ? | 95 Yes | 8 No |
Rated moter voltage and frequency is 380volt 60 hz but moter is running at 380votac 50hz is this harmful for moter winding
hello every one, what is the difference between the Kvar and farads, Rating on Power capacitor is for eg: x kvar, and normal capacitor is eg: x farads. what is the relation between these two?
Can anyone explain me about the capacitor calculation
can anyone tell me the website for star-delta control diagram?
WHAT ARE THE DATAS REQUIRED FOR SCS SIGNAL LIST PREPARATION?
If I bring a basic electric meter from the States and hook it up in Costa Rica in a development that has only one transformer for the 50 homes, will it still be accurate regarding the usage of kilowatt hours?
Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing
Why the transformers making noise?
Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only.
12 Answers ACC, JLL, ZETDC,
In which reason, one end of CT secondry get connected with Earthed? Normaly S1 of CT. Why????
why dc motor is called constant flux motor?
why there is 1 phase and 3 phase but not 2 phase and 4 phase?