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Just tested my new APC BACK-UPS ES 850VA - BE850G2-UK - three queries

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

rsmith12498
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Just tested my new APC BACK-UPS ES 850VA - BE850G2-UK - three queries

I live in the UK and the power quality in my house has never been the best. For example when using an electric shower, my bedroom light sometimes dims a little bit, but its very subtle.

To start, I:

1. Removed all labels, packaging and connected the UPS battery
2. Plugged in and turned on UPS, let it initialise
3. Plugged in a 2009 PC (a slow old office one with an (iirc) max 350W PSU, and can't be using much actual watts since hardware is weak)
4. Plugged in a 1080p Dell monitor into the Battery + Surge sockets.
5. Turned on both devices
6. Plugged in the data cable from UPS to PC and installed PowerChute software which worked fine.

The charge was 100% on the UPS out of the box. I have queries on three main areas:


Question 1

Is it okay to plug a device (iMac 2012) into an 13A extension cord that plugs into the UPS? So Device -> Extension Cord -> UPS -> Wall plug.

Does it matter if this extension cord has surge protection or not?

Do I need to consider anything regarding fuses?

Unfortunately using a 10m kettle cable instead of the iMac's stock cable to eliminate the extension cord entirely is not an option since I can only find cheap ones that aren't 100% safe.


Question 2

When the computer and monitor are running idle WITH mains power being supplied (i.e. there is no powercut), PowerChute reports that the battery backup is providing 62-72 Watts of power! Is this normal?

I clicked on "Sensitivity" in PowerChute and learnt that this may be due to electrical noise. How can I can I confirm this is the case? If it is, is it within normal levels, or should I get my house's wiring checked ASAP?

I changed the sensitivity settings between High, Medium and Low, and clicked Apply, but there was no change. Is this normal?


Question 3

I had the computer and monitor running idle WITH mains power being supplied (i.e. there is no powercut).

I then simulated a power loss using my circuit breaker. The UPS kicked in and automatically hibernated the PC within 1 minute. How can I change this to shutdown instead of hibernation?

I then restored power and after a minute, turned the PC back on. However, by the time the PC loaded the desktop, the PC and monitor immediately blinked off, and the LED on the UPS's power button changed to red for a second, then reverted to green (the actual UPS remained on, so it wasn't a circuit break in my house)

I waited 10 minutes from that point and then turned the PC back on. The battery level was around 93%, so it didn't fully drain or anything for sure. Even when the PC and monitor was running on battery power, the wattage usage hovered at around 75/550 watts. Also note that my input voltage was 245 volts.

PowerChute on normal A/C power: https://i.imgur.com/rFashfV.png

PowerChute on battery power: https://i.imgur.com/jbQ0Mx4.png

Was this an overload event? I couldn't find any trace of it in PowerChute - does PowerChute report overload events?

How could this have occurred when the mains was on? I can't quite remember but even after the mains was on for a minute, I think the UPS power LED was blinking twice every 2 seconds, which indicates it's on battery power. Is there a delay in the UPS switching from battery power back to mains power after a power loss event?

Overall though, I am very impressed with the product.

Thanks and I hope someone can answer my questions.

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