Installation and user manual, External bypass 4 5 – MGE UPS Systems GALAXY PW 225KVA User Manual

Page 75

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Installation and User Manual

Start-up

Following servicing, proceed in the following order: (see Figure 5-5)

1.

Close switches Q5N on the UPS units.

2.

Close switch Q5N in the external bypass unit.

3.

Open switch Q3BP in the parallel-connection unit.

4.

Close switches Q1 and QF1 on the UPS units.

5.

Start the inverters (press the "inverter ON" buttons 7 ).

Figure 5-5: Start-up Procedure After Isolation Diagram.

Figure 5-6: Redundancy for Increased Output Diagram.

2

1

Q3BP

Galaxy 1

Galaxy 2

2

1

Galaxy 3

2

1

Galaxy 4

2

Q5N

1

2

Q1

QF1

Q5N

Q4S

2

3

4

1

0

1

0

Q3BP

Q5N

Q1

Q4S

QF1

0 1

Q5N

Q5N

Q1

Q4S

external bypass

4

5

1

0

1

0

1

0

1

0

1

0

1

6

1

0

7

8

1

0

1

0

1

0

Maintenance

5 — 5

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