Answer Posted / thwosif_emrson
How to find out Iron & Copper lossed in transformer:-
1>Iron Losses:-
Iron losses are due to hysteresis and eddy-current loss
produced by the alternating magnetic flux in the iron core.
The iron losses are almost independent of the load and thus
are considered to be constant at all loads.
In order to determine the iron loss, one winding of the
transformer (whichever is the most convenient) is open
circuited. A voltage is applied to the other winding and
the power (watts) in this circuit is measured. This power
represents the iron losses. Copper losses under these
circumstances are negligible.
2>Copper Losses:-
Copper losses are the heat losses in the windings due to
the electrical resistance of the windings. The copper
losses are proportional to the square of the current and
therefore to the kVA output. These losses can be calculated
from the design data but can also be measured by a test.
This test is known as the short circuit test for copper
losses.
The short circuit test is carried out by short circuiting
one winding, thus causing the transformer to behave like a
coil having a leakage impedance equal to that of both
windings. A low voltage is applied to the open winding
sufficient to circulate full load current through the open
winding due to transformer action in the short-circuited
winding. Under these conditions, the flux set up in the
core is so small that iron losses can usually be neglected
and the wattmeter would give the total copper loss.
| Is This Answer Correct ? | 39 Yes | 6 No |
Post New Answer View All Answers
what is counter poise conductors
What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection
What are conduct on the testing in cf in ur site?
how does ELR works? explain
What is the actual calculation for transformer short circuit test?.
Why neutral cable carry current.
what is the safety of voltage power transformer(2250KVA0
How we can calculate the consumption in kwh of motor on basis of kw @100% load, @50% load & @ no load.
how to calculate the earth fault current
Why negative feedback is preferred in the control system?
Explain mechanical rotational system?
132/6.6𝚔𝚟 𝚝𝚛𝚊𝚗𝚜𝚏𝚘𝚛𝚖𝚎𝚛 𝚗𝚎𝚞𝚝𝚛𝚊𝚕 𝚑𝚊𝚜 𝚘𝚗𝚎 𝚎𝚊𝚛𝚝𝚑 𝚙𝚒𝚝 𝚍𝚎𝚍𝚒𝚌𝚊𝚝𝚎𝚍. 𝙸'𝚟𝚎 𝚊𝚗𝚘𝚝𝚑𝚎𝚛 𝚝𝚛𝚊𝚗𝚜𝚏𝚘𝚛𝚖𝚎𝚛 𝚘𝚏 6.6𝚔𝚟/415𝚟 𝚌𝚊𝚗 𝙸 𝚌𝚘𝚗𝚗𝚎𝚌𝚝 𝚗𝚎𝚞𝚝𝚛𝚊𝚕 𝚝𝚘 𝚜𝚊𝚖𝚎 𝚎𝚊𝚛𝚝𝚑 𝚙𝚒𝚝 𝚊𝚜 𝚘𝚏 13/6.𝚔𝚟 𝚝𝚛𝚊𝚗𝚜𝚏𝚘𝚛𝚖𝚎𝚛?? 𝙸𝚏 𝙽𝚘.. 𝚃𝚑𝚎𝚗 𝚠𝚑𝚢??
transformer phasor diagram under load explain it?
is there any role of power factor with frequency variation? and how we can manage the frequency variation?
What is the lockout relay
