How does plugging a UPS into a surge protected power strip, draw power away from the UPS?

[eveares]

So according to this article: https://www.se.com/us/en/faqs/FA158852/

Plugging a UPS into a surge protected power strip can cause more powerful equipment plugged into the same surge protected power strip as the UPS, to draw necessary voltage away from the UPS, causing the UPS to switch over to battery mode.

Exact words in the article are:

Plugging your UPS into a surge protector:
In order for your UPS to get the best power available, you should plug your UPS directly into the wall receptacle. Plugging your UPS into a surge protector may cause the UPS to go to battery often when it normally should remain online. This is because other, more powerful equipment may draw necessary voltage away from the UPS which it requires to remain online. In addition, it may compromise the ground connection which the UPS needs in order to provide adequate surge protection. All APC Back-UPS and Smart-UPS products provide proper surge suppression for power lines without the need of additional protection.

As far as I was concerned, a basic surge protected power strip is just a power strip that has a metal oxide varistor (MOV) between L-N, N-E and E-L that quickly clamps down the voltage should it get to high due to a surge or other transient.

I fail to see how this (plugging a UPS into a surge protected power strip) would draw voltage away from the UPS in normal conditions as the link above suggests. Also, don't the MOV's in surge protected power strips by design, don't start conducting till the voltage across them has gone way above what you would see in normal healthy circumstances?

Please enlighten me, as what the Schneider article says, I find hard to believe.

Regards: Elliott.

 

[flameport]

Cheapo substandard power strip with flimsy cable will have a significant volt drop if other high power items are connected to it.
That article is also for the USA where their 120V supply and therefore higher current will make volt drop much worse.
The surge protection is unrelated.

 

[eveares]

That makes logical sense, but the way I read it, was the surge protection specifically contributes to the voltage drop.

 

[JohnW2]

That makes logical sense, but the way I read it, was the surge protection specifically contributes to the voltage drop.

That seems very hard to believe