how we can calculate the transformer size.
Answers were Sorted based on User's Feedback
Answer / pravin sathalpara
it is depend upon the load beacause trasformer equistion
is
kva=VICOS
SO,OUR VOLTAGE AND CURRENT(LOAD) IS DECIDE FIRST
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / bhagaban barik
KW=KVA*P.f
i.e- KVA=KW/p.f
It also depends on Utilisation factor & maintenance factor
we have to consider 30% margin for future expansion
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / papuraj
Its purely depends upon your maximum demand nothing else.For an example if you have the connected load is 700kva and maximum demand is only 350kva, hence we could select 500kva transformer to be with 20% future additional load.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / rajani
SIZE OF TRANSFORMER DEPENDS THE FOLLOWING
CONNECTED LOAD EX:2500KVA
MAXIMUM DEMAND EX:1500KVA
STARTING LOAD EX: 500KVA
LOAD FACTOR EX:0.9
FUTURE LOADS EX: 20% EXTRA TO MAXIMUMDEMAND
SO TRANSFORMER SIZE IS (1500+500+20%(1500))*0.9=2070KVA
SO 2200KVA TRANSFORMER IS ADEQUATE FOR MAX DEMAND OF
1500KVA LOAD.
Is This Answer Correct ? | 19 Yes | 20 No |
Answer / abhishek ranjan
transmer size can be calculated according to load.
its also depend on the material used.
if we use HRS in the place of CRGOS then its size will increse
Is This Answer Correct ? | 12 Yes | 20 No |
Answer / mitul
Transformer size ,we can consider what is the maximum load and for future expansion 25% shall be considered
Is This Answer Correct ? | 1 Yes | 9 No |
Answer / v v s reddy
Check the following conitions
1. Rating of transformer is sufficient to totao load
2. Thermal loading on the transformer during motor starting
3.Voltage available at motor terminal during motor starting
4.Voltage available at bus during motor starting
Is This Answer Correct ? | 7 Yes | 16 No |
Answer / vladimir tutulaku
WE HAVE A OLD TRANSFORMER WITHOUT TARGET
HOW WE CAN DECIDE THE POWER OF TRANSFORMER
Is This Answer Correct ? | 4 Yes | 13 No |
Answer / u.chandarasekar
It is Very Very Simple take one Measurment Tape
Is This Answer Correct ? | 1 Yes | 10 No |
Answer / rajesh
Transformer size is decided based on the following factor.
--> Load details
--> Load factor
--> coincidence factor
--> BKW value
--> Other than this it required power factor of the loads.
By using the following formulas we can calculate the
kva rating.
cosф * KW = KVAr
(KVA)2 =( KW)2 +( KVAr)2
Is This Answer Correct ? | 8 Yes | 24 No |
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