Skip to content
View in the app

A better way to browse. Learn more.

Power Forum - Renewable Energy Discussion

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Sizing inverter with multiple UPS behind

Featured Replies

To prevent PCs restarting during the slight dip in power as the inverter switches between SUB etc, we have multiple small ups on our pcs. 

Say there's 10 of these. The input current rating on the sticker shows 10a each. That's 2.4kw each, 24kw just on the UPSs. 

Although the devices behind the upss are rated around 400w max. 

What would be a reasonable kw value to use in calculating loads for the inverters, obviously 24kw is way too much 

 

 

Edited by Hansa

Personally, I would get an inverter that does not require the use of UPSs. Failing that, the max load of the devices behind the UPSs plus the max charging load of all UPSs.

Can you not run 2 PCs off a single UPS. That way you cut the load you have to deal with by 50%?

Then wait until load shedding starts again and sell the others - demand and price go up when Eskom starts shedding.

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...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.