Tripp Lite SU120KX2 owner manual Bypass

18 – Start-Up, Shutdown and Bypass (continued)

8-11 Switching to Normal Mode from Manual Bypass Mode (Parallel UPS—MUS)

•If the UPS systems have external battery cabinets connected,

2 switch on the external battery cabinet circuit breaker switch of each battery cabinet for each UPS.

3

4		Switch on the bypass input circuit breaker switch				and the
					Q2
	•
		output circuit breaker switch		of each UPS system.
			Q4

5

6		Confirm that all UPS systems are in manual bypass mode, then
	•
		switch off the manual bypass input circuit breaker switch				Q3
		of each UPS system. The LCD screen will read “ON AUTO
		BYPASS”.
7
8		Switch on the main input circuit breaker switch			of each UPS
				Q1
	•
		system.
9
10		Press the ON button	of the first UPS system for 3 seconds (until
	•
		you hear a beep), then release the button. Press the ON button
		for each of the remaining UPS system for 3 seconds (until you
		hear a beep), then release the button. When the inverters of all
11		UPS systems are operating normally, they will switch to on-line
		(normal) mode at the same time.
12
13
14

1

Q4Q2

Output	Manual	Bypass	Main
2	Bypass	Input	Input
	Q3
Output	Manual	Bypass	Main
3	Bypass	Input	Input

Q1

Output	Manual	Bypass	Main
4	Bypass	Input	Input
			A
5

28

12-212-93-3141.indb 28 12/28/2012 11:17:51 AM