Calculate Size of Transformer and Voltage drop due to starting of large size motor
May 7, 2013 20 Comments
- Calculate voltage drop in transformer due starting of Single/Multiple motor
- Calculate Full Load Current of Transformer.
- Calculate Short Circuit Current at Transformer Secondary.
- Calculate Max KVA of Transformer at Short Circuit Current.
- Calculate Motor In Rush KVA At Starting.
- Calculate Voltage Drop at Transformer Secondary Due to Motor in Rush
- Calculate Transformer Secondary Voltage
JIGNESH PARMAR
Hi Jignesh, this latest file “Calculate Size of Transformer and Voltage drop due to starting of large size motor” When you try to download it, it comes as an exe file and the antivirus program confirms that it is a virus. Please have a look. Thanks
There is No any VIRUS but It is Download manage exe File of File sharing site.
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dear sir i cant down load the file any help?? please
I can’t download. How do i download?
I download the file without .exe but it opens with funny things!
No spreadsheet is found.
Respected Sir,
can;t download, pl help me in downloading
thks
Dear sir,
pls advice for below problem
DG for 400 KW HT MOTOR: We need separate DG Set for running 400KW, 11
KV MOTOR. The Motor has DOL Starter. We are going to run this motor
through 2.5 MVA Transformer. The DG Shall be 415V, Three Phase. DG
output shall be feed to LV Side (415V) of 2.5 MVA Transformer. And the
Motor shall be connected to secondary side (11kv) of the transformer.
We request to advice suitable rating of DG Set.
Moter spectifications as below
Power – 400kw / 536HP
Pole – 2
Voltage / PH / Hz – 11kv / 3ph / 50Hz
Speed – 2975 RPM
Type of Motor – SCR
Service Factor – 1
Rated PF – 0.88
Full load Current – 25amp
Method of Starting – DOL
Application – Pump
Thanks and regards
Janardhan
Not getting Your Point as per your detail Motor is 11KV and you state that “The DG Shall be 415V, Three Phase. DG
output shall be feed to LV Side (415V) of 2.5 MVA Transformer. And the Motor shall be connected to secondary side (11kv) of the transformer”
What is out put of TC 11KV/415 or else..Where you want to connect 11KV Motor..What is Out put of DG 11KV or 415V..
Use DG Size Calculator of this Blog..
Dear sir,
DG set is having out put voltage of 415V. and 50Hz
This DG out put will be given to Step-up 2.5MVA Transformer (415v to 11kv ).
Input supply for the HT Motor of 400kw will be taken from the 11kv transformer.
Please suggest what shall be the rating of LT DG set.
Please make available ” Buy Unlocked version
Thanks Padlock01
I WAS LOOKING AT YOUR SPREADSHEET. YOU HAVE LISTED MOTOR 300 KW AND 240 KVA. I BELIEVE YOU HAVE THOSE NUMBERS OR KW/KVA REVERSED.
I WOULD LIKE TO SUGGEST YOU INCLUDE AN OPTION FOR LONG RUNS OF SECONDARY CABLE.
sir pls tell me the average house kw per month…..
how many house can be connected to one 100 kva transformer
discharge and head is given
then we calculate motor capacity in kw ?
pls help me
if u calculate give me formula sir
dear sir,
please suggest me how to select dg size for the following-
8 nos 150kw,415v motors with soft starter and auxiliary load of 100kw.
i’m new at electrical.
how many motor in the right side?
sir ,pls give me a notes on electrical Design
Dear Sir,
what is the basis for considering motor full load current should be less than or equal to transfomer secondary full load current.
it is complicated to download and open , better you give us straight forward link, it will be helpful to us.
Hi, sorry, I can’t download the file, is there another way to access it?