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Question
What do you mean by S.F.U. unit? application of it.
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
SWITCH FUSE UNIT. IT IS USED FOR PROTECTING POWER AND
CONTROL CIRCUIT DEPENDS ON THE CURRENT RATING REQUIRED.
 
Is This Answer Correct ?    125 Yes 14 No
Suresh Raajaa
 
Answer
# 2
It is Switched Fuse Unit. It has one switch unit and one
fuse unit. When we operate the breaker, the contacts will
get close through switch and then the supply will passes
through the fuse unit to the output.

Whereas in Fuse Switch Unit there is no separte switch and
fuse unit. There is only fuse unit which act itself as a
switch. When we operate the fuse unit will close the input
and output of the breaker.
 
Is This Answer Correct ?    77 Yes 13 No
Rajan
 
 
 
Answer
# 3
switch fuse unit.there are many protective systems like
HRC,MCCB,MCB...
 
Is This Answer Correct ?    54 Yes 28 No
Vinod
 
Answer
# 4
SFU(SWITCH FUSE UNIT)-IT HAS BEEN USED TO TRIP THE
CIRCUIT,PARTICULARLY THIS IS USED FOR HIGH CAPACITY TRIPPING
. WHEREAS MCB&MCCB ARE USED FOR LOW CAPACITY TRIPPING
 
Is This Answer Correct ?    31 Yes 17 No
Karthik
 
Answer
# 5
Switch Fuse Unit . It is made of power fuse (80,250,400A)
and switch which can be operated from outside using extend
rotary handle to rotate the shaft which is inside it .
 
Is This Answer Correct ?    12 Yes 5 No
Ayman
 
Answer
# 6
SFU (SWITCH FUSE UNIT) IS USED AS A BASE FOR FUSES IN WHICH
FUSES ARE FIXED IN ELECTRICAL PANELS.
 
Is This Answer Correct ?    20 Yes 19 No
Vinay
 
Answer
# 7
SFU-switch fuse unit. its a fuse unit which can be connet
and disconnect manually with power using a handle.
 
Is This Answer Correct ?    14 Yes 13 No
Senindra123
 
Answer
# 8
SFU switch fuse unit . in sfu there are many protective
devices known as switch,fuse,contactor,relay<bmr> local
remot switch ,in sfu we set current rating for protection
of load
 
Is This Answer Correct ?    0 Yes 0 No
Lal Kesh Yadfav
 
Answer
# 9
Switch disconnectoe Fuse unit 
Is This Answer Correct ?    0 Yes 0 No
Ptha
 
Answer
# 10
It is used to protect electrical or electronic devices and
control circuit depending on the current rating.
 
Is This Answer Correct ?    1 Yes 1 No
D R Nagar
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
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Why celing fans will rotate slowly after some days.?   1
what happen to a dc series motor if it given as ac supply accidentaly ONGC 2
can any one explain me the where is the use of plc and scada   3
Why do we have 110V, 230V, 415V etc. in electrical transmissions? Why not 100V, 200V,400V?   4
How many types of lightings are there Met-Trade 2
3 measuring instrument for transformers?   5
7. HRC FUSE PROVIDES BEST PROTECTION AGAINST....... SSC 2
what are the sections in a high voltage system(eg:incomer,buscoupler,isolator L&T 1
Why, the starting current of 3 phase Induction Motor is 7 to 8 times its rated current? L&T 9
The DC current waveform is - . What about the fire alarm waveform?   1
what are the settings is there for ABB REM543 Generator Protection Relay   1
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
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