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Static Transfer Switch preinstalled in UPS?

Integrator741

Jun 16, 2013
125
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Jun 16, 2013
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125
Hello,

Does a static transfer switch (STS) needs separate installation? Or does that come integrated in some sort of equipment?

Thanks.
 

kellys_eye

Jun 25, 2010
6,514
Joined
Jun 25, 2010
Messages
6,514
That's what the 'U' in UPS means - uninterruptible.....

Check the device specification for switching times and pick the lowest!

Electrically, this is called a make-before-break function but requires synchronisation of the two sources but, for most applications, this wouldn't be an issue.
 
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