Jump to content
Mechanical Engineering
  • 0
Sign in to follow this  
Gfbcois

VSD problems

Question

Hi I used a VSD to run a three phase electrical motor, 50hz, 4 poles, 380V supply. I measured and calculated my input electrical power supply (from utilities provider) to be 684 W using sqrt(3)VI and then measured the output current from my VSD to my motor using a tong tester. The VSD had a voltage indicator so I used that as my voltage output. When calculating my ouput power using sqrt(3)VIcos(theta) I get a power output of over 800 W, which does not make sense. So can someone explain to me what I am doing wrong, or why this is happening?

Share this post


Link to post
Share on other sites

0 answers to this question

Recommended Posts

There have been no answers to this question yet

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  






×
×
  • Create New...