MGE UPS Systems GALAXY PW 100 kVA, Installation Manual

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E-51028231XU/BH
Parameters for bypass AC source and load cables for a parallel UPS
configuration
Rated unit Number of Total UPS Bypass AC Cable cross-
output parallel- rated output source or load section (1)
in kVA connected in kVA line current in mm2
units in Amps
20 2 40 58 35
3 60 87 50
4 80 116 50
30 2 60 86 50
3 90 129 70
4 120 172 70
40 2 80 116 50
3 120 174 70
4 160 232 120
50 2 100 144 70
3 150 216 95
4 200 288 150
60 2 120 174 70
3 180 261 120
4 240 348 185
80 2 160 232 120
3 240 348 185
4 320 464 2x95
100 2 200 288 150
3 300 432 185
4 400 576 2x120
120 2 240 348 185
3 360 522 2x120
4 480 696 2x150
160 2 320 462 2x95
3 480 693 2x150
4 640 924 3x120
200 2 400 578 2x120
3 600 866 2x185
4 800 1155 3x185
(1) cable cross-sections are given for copper
conductors of the U1000 R02V type (increase by
30% for aluminium conductors). They are
calculated according to permissible temperature
rise and allow for line voltage drops over a
The table opposite serves as an
example for a parallel-connected
installation comprising up to four UPS
units.
◗ for installations with redundant units,
take into account only the units
required to supply the load power (e.g.
for an installation made up of 3 parallel-
connected UPS units, one being
redundant, only 2 UPS units are used
to determine bypass AC source and
load currents and cable cross-
sections);
◗ this table has been drawn up for
rated phase-to-phase bypass AC
source and load voltages of 400 V and
full rated load with a power factor of
0.8. For voltages of 380 V or 415 V,
multiply the indicated currents by 1.05
and 0.96 respectively, then modify the
cable cross-sections accordingly, if
necessary.
The cable cross-sections in this table
concern the parts illustrated in bold in
the simplified diagram in figure 3,
where:
1: normal AC source,
2: bypass AC source,
A: external bypass.
maximum length of 100 m. For greater lengths, the
cross-sections should be chosen to limit voltage
drops to 3%.
Fig. 3
A
2
1
2
1
2
1
2
Galaxy 2
Galaxy 3
Galaxy 1
Characteristics (cont.)