Tripp Lite H2551, H2550FL16 Replacement, System on Wall, To restore full power until UPS1

Single Power Supply, or Multiple Power Supplies Operating in Redundant Mode

STEP 1: Determine Configuration
		Configuration	1		2		3	4		5
		Power Supply	PS1	PS1	PS2	PS1	PS2	PS1 & PS2	PS1	PS2
		Power Source	Wall	Wall	Wall	UPS1	Wall	UPS1	UPS1	UPS2
STEP 2: Consider Failure Scenarios			STEP 3: Consider System Status
PS1 Status	Utility Status	UPS Status	System Status	System Status		System Status		System Status	System Status
OK	OK	OK	OK		OK		OK	OK		OK
Failure	OK	OK	Crash		OK		OK	Crash		OK
OK	Blackout	OK	Crash	Crash			OK	OK		OK
OK	Blackout	UPS1 Battery	Crash	Crash			Crash	Crash		OK
		Fails
OK	Blackout	UPS1 Internal	Crash	Crash			Crash	Crash		OK
		Fault
OK	OK	UPS1 Battery	—		—		OK	OK		OK
		Fails				Hot swap battery		Hot swap battery	Hot swap battery
OK	OK	UPS1 Internal	—		—	Line-Interactive UPS Systems
							OK	Crash		OK
		Fault				Replace UPS.		Replace UPS.	Replace UPS.
						System on PS2/Wall.			System on PS2/UPS2.
						Vulnerable to outage			Services OK during
						during UPS			UPS replacement
						replacement
						On-Line UPS Systems
							OK	OK		OK
						UPS on bypass,		UPS on bypass.	UPS on bypass,
						System on PS2/Wall.		System on Wall.	System on PS2/UPS2.
						Replace UPS1.		Services down*	Replace UPS1.
						Vulnerable to		while replacing	Services OK during
						outage during UPS		UPS1	UPS replacement
						replacement

*SmartOnline Hot-Swappable Modular 5-16KVA UPS system hardware can be hot swapped without service outage.

Multiple Power Supplies Operating in Dual (Combined, Non-Redundant) Mode

STEP 1: Determine Configuration
		Configuration		1	2			3
		Power Supply	PS1	PS2	PS1	PS2	PS1	PS2
		Power Source	Wall	Wall	UPS1		UPS1	UPS2
STEP 2: Consider Failure Scenarios			STEP 3: Consider System Status
PS1 Status	Utility Status	UPS Status	System Status		System Status			System Status
OK	OK	OK		OK	OK			OK
Failure	OK	OK	Reduced Output		OK			OK
OK	Blackout	OK		Crash	OK			OK
OK	Blackout	UPS1 Battery		Crash	Crash			Reduced Output
		Fails			Replace UPS1.			Replace UPS1.
					Output reduced during UPS		Output reduced during UPS
					replacement			replacement
OK	Blackout	UPS1 Internal		—	Crash			Reduced Output
		Fault			Replace UPS1		Replace UPS1. Output reduced
							until UPS1 replacement
OK	OK	UPS1 Battery		—	OK			OK
		Fails			Hot swap battery			Hot swap battery
OK	OK	UPS1 Internal		—	Line-Interactive UPS Systems
					Crash			Reduced Output
		Fault			Replace UPS. Plug into wall until		Replace UPS1. Plug PS1 into wall
					UPS replacement		to restore full power until UPS1
							replacement. Output reduced
							until UPS1 replacement
					On-Line UPS Systems
					OK			OK
					Replace UPS1.			Replace UPS1.
					Both PS on UPS Bypass.		PS1 on UPS1 Bypass circuit,
					Services down* while replacing		vulnerable to outage. Reduced
					UPS1		power during UPS1 replacement

*SmartOnline Hot-Swappable Modular 5-16KVA UPS system hardware can be hot swapped without service outage.

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