APC Symetra UPS LX 16000 in Bypass question

Does anyone know what will happen to the power supply when we switch an APC Symetra LX 16000 UPS from normal operations to Battery Bypass.
We are doing this as part of our DR Testing and want to ensure that the bypass works, we want to know if there will be any power interruption to normal power flow. Not wanting to have my estate power off suddenly during testing.

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Davis McCarnOwnerCommented:
Unless you implement a second UPS (Eaton's are way better than APC's) and appropriate bypass management circuitry, you are going to experience a power outage if the APC runs out of battery while the main AC is out (period)
In answer to your direct question, the APC will stop using the batteries when you enter battery bypass so the normal AC power had better be good when you do it!  Capiche?
Internal bypass will disconnect battery modules, power modules, and intelligence(control) modules.

It will place the entire unit on utility mains power immediately.

You can do it via software, if you prefer.  This would avoid somebody tripping the wrong switch.  Killing the 'input' breaker will disconnect mains power completely...not what you want to do.

The switchover between battery and mains should NOT cause powerinterruption to connected equipment.  This is the standard means to replace multiple battery modules at the same time, without setting off an automated shutdown due to low runtime.

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TheHighlandersAuthor Commented:
Thanks, this is what we thought but wanted a 2nd opinion.
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