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Installation and User Manual
1.8 Parallel Connected 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).
Table 1-5 serves as an example for a parallel connected installation comprising up to four UPS units.
Table 1-5: Parameters for Bypass AC Source and Load Cables for a Parallel UPS.
Parameters
rated unit number of total UPS bypass AC
output parallel- rated output source or load
in kVA connected in kVA line current
units in Amps
100 2 200 240
3 300 360
4 400 480
130 2 260 312
3 390 468
4 520 624
150 2 300 360
3 450 540
4 600 720
180 2 360 434
3 540 651
4 720 868
200 2 400 482
3 600 723
4 800 964
225 2 450 542
3 675 813
4 900 1084
Introduction 1 — 986-133060-00 A00