Jump to content

VFD, borehole and sine wave filtering


babweupatree

Recommended Posts

Hi there,

I have a borehole that I would like to run off solar. The pump is a single phase 2.2kW sitting at around 82 meters. I was looking at the INVT VFD and was told that it was necessary to also add a sine wave filter for depths greater than 30 meters.

I believe my pump outputs 4.8m^3 per hour. My main motivation for switching to solar is for irrigation so getting the maximum flow rate possible is necessary. Each sprinkler pulls around 600 litres per hour so will be only be able to run a max of 8 sprinklers at any time.

I will also be pumping from the river at a later stage so the VFD would seem to be a perfect solution for my needs and I will be able to run either the borehole or the river pump.

I'd like to know if anyone has experience with setting up a system like this and whether the sine wave filter was also installed.

EDIT: for my needs (maximum flow rate) would it be better to go for a 3-phase system?

 

Edited by babweupatree
Link to comment
Share on other sites

I have a 2.2kw Franklin pump at 65m. 
It starts at 35 amps and runs at 13 amps. It trips my 4kw inverter if it is not connected to the municipal supply. 
So you need to look at a 8kW inverter with the max no of panels for it. 
Alternatively look at softstart systems to reduce the startup amps. ACDC advertises one for less than R3k

Link to comment
Share on other sites

Join the conversation

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

Guest
Reply to this topic...

×   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.

×
×
  • Create New...