Liebert Series 610 user manual One system in bypass to Continuous Tie operation Option

Operating Instructions

Figure 20 One system in bypass to Continuous Tie operation (Option 1)

FROM:

One System in Bypass Mode

	System 1				System 2
M1		M1	SS1	SS2

Tie Open

Tie

Load 1 Load 2

TO:

Continuous Tied Systems

TO:

Restart Bypassed System

	System 1				System 2		Partial
M1		M1	SS1	SS2		M2	or full
							capacity

Tie Open

Tie

Load 1 Load 2

System 1 System 2

M1

M1

SS1

SS2

M2

2

Tie Closed

Tie

Load 1 Load 2

LEGEND: Mx = Module

SSx = Static Bypass Switch

Restart the bypassed system, then use the procedures in Tying the UPS Systems - Continuous Parallel Operations (in Section 4.2.11) or see Figure 21.

Figure 21 One system in bypass to Continuous Tie operation (Option 2)

M1

FROM:

One System in Bypass Mode

System 1				System 2
	M1	SS1	SS2

M1

TO:

Combined Loads Operation

System 1				System 2
	M1	SS1	SS2		M2

M2

M1

Tie Open
	Tie
	Load 1	Load 2
	TO:
Continuous Tied Systems
System 1			System 2
M1	SS1	SS2	M2

Momentary Tie		Tie Closed
for transfer of
Load 2 to	Tie
System 1	Load 1	Load 2

Partial or full capacity

Tie Closed

Tie

Load 1 Load 2

LEGEND: Mx = Module

SSx = Static Bypass Switch

Combined loads on one system—See4.2.4 - Isolating a UPS System for Maintenance - Combined Loads Operation; restart bypass system. Then use Continuous Tie procedures—Tying the UPS Systems - Continuous Parallel Operations in Section 4.2.11.

Restart one system, then refer to Figure 20. Or restart both systems, then refer to Figure 15.

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