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36 - E-51028230XT/BG
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2 3 4 5
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Q5N
Q4S
Q3BP
Q5N
Q4S
Q3BP
Q5NQ1 Q4S
QF1
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I
bypass 600 kVA
bypass 150, 360 kVA
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2 3 4 5
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MGE Galaxy PW 20 to 200 kVA
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00
or
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Q5NQ1 Q4S
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2 3 4 5
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1
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Q5N
Q4S
Q3BP
Q5N
Q4S
Q3BP
Q5NQ1 Q4S
QF1
0
I
bypass 600 kVA
bypass 150, 360 kVA
7
2 3 4 5
5
6
1
MGe Galaxy PW 20 to 200 kVA
1
0
1
0
1
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1
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1
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or
Parallel UPS for increased
output
See figure 29.
◗ isolate all UPSs
Proceed in the following order (see
figure 30):
◗◗ shut down the inverters (press the
"inverter OFF" buttons
9 for three
seconds),
◗ ◗ close switch Q3BP and open
switches Q5N and Q4S in the parallel-
connection unit,
◗ ◗ open switches Q1, QF1 and Q5N on
the UPS units.
◗ start-up
Following servicing, proceed in the
following order (see figure 31):
◗◗ close switches Q5N on the UPS
units,
◗◗ close switch Q4S, then switch Q5N,
in the parallel-connection unit,
◗◗ open switch Q3BP in the parallel-
connection unit,
◗◗ close switches Q1 and QF1 on the
UPS units,
◗◗ start the inverters (press the "inverter
ON" buttons 8 ).
Note:
We recommend that you call on the
after-sales support department to carry
out these operations.
Note that for parallel UPSs for
increased output, the entire installation
must be bypassed because it is not
possible to isolate just one UPS unit.
Maintenance (cont.)
Fig. 29
Fig. 30
Fig. 31
2
1
Q3BP
Q4S
Galaxy 1
Galaxy 2
2
1
Galaxy 3
2
1
Galaxy 4
2
Q5N
1
2
Q1
QF1
Q5N
Q4S