Previous in Forum: Flashing an Alternator   Next in Forum: electrical
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
7 comments
Rate Comments: Nested
Anonymous Poster

reactive load bank

02/08/2009 3:39 AM

Sirs,

I have a 1675KVA,400v,50hz 3ph genset and I would like to test it with full load at 0.8 pf. ie @1340kw. What should be the reactive load to be connected to get 0.8 pf at full load and how can I calculate the power consumption of the reactive load and the size of the cable to be used.

Thanks in advance.
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
sb
Guru

Join Date: Mar 2007
Posts: 2550
Good Answers: 103
#1

Re: reactive load bank

02/08/2009 4:24 AM

Is it homework ?

Nobody tests the Genset as you are asking for.

__________________
 Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
Reply
jack of all trades
Guru
New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: Auckland, New Zealand
Posts: 8777
Good Answers: 376
#2

Re: reactive load bank

02/08/2009 1:32 PM

This does sound like a homework question rather than a real world test that a manufacturer or supplied client would do.

Can you please provide more information on WHY you are asking such a question.

__________________
 jack of all trades
Reply
wareagle
Guru
United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
Posts: 1604
Good Answers: 63
#3

Re: reactive load bank

02/08/2009 2:18 PM

You have all the information to make the calculation. KVA, KW and PF. Now make the calculation and post it for all the world to see.
Reply Score 1 for Good Answer
No more "Almost" Good Answers.
sb
Guru

Join Date: Mar 2007
Posts: 2550
Good Answers: 103
#4
In reply to #3

Re: reactive load bank

02/08/2009 9:59 PM

I did the calculations then suddenly re-read the forum thread and it struck as a homework. deleted the whole lot of 10 minutes struggle and edited the comment on #1

__________________
 Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
Reply
craigza
Power-User
South Africa - Member -

Join Date: Nov 2008
Location: Johannesburg
Posts: 295
Good Answers: 12
#5

Re: reactive load bank

02/09/2009 1:12 AM

Hi all,

Funny - you seem to have got to calculate the power. Very strange that you cannot calculate the load or the cable size required?

Smell a rat here. For cable sizing please refer to other posts within the forum. For the calculation you could perhaps refer to your text book, or if you really feel lazy try google?

Regards,

Craig
Reply
Anonymous Poster
#6

Re: reactive load bank

02/27/2009 12:45 AM
Rating of generator=1675kVA
Voltage=400
PF=0.8
Maximum kW to be test=1340kW
Current=2418Amps
Cable size required=3Cx4Rx 400sqmm
According to NEMA Bus duct of 3Cx2Rx200mmx20mm can be used for this
Reply
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#7

Re: reactive load bank

09/25/2024 6:21 AM

<...how...calculate the power consumption of the reactive load and the size of the cable to be used....>

Simple. Apply the content of British Standard 7671, which gives full protocols for cable sizing. That's what a qualified Electrician would do.

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Reply
Reply to Forum Thread
Have a Different Question?
7 comments

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

Anonymous Poster (1); craigza (1); jack of all trades (1); PWSlack (1); sb (2); wareagle (1)

Previous in Forum: Flashing an Alternator   Next in Forum: electrical

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (94 right now)
Show Members
Advertisement