UPS 40 – 160 kVA, 400V 50/60 Hz output
User’s and Installation Guide
1023294
Revision C
53
9 Wiring Parallel systems
The system parallel module (SPM) is recommended and has input connections up to four
parallel UPS modules and make-before-brake type of system bypass switch.
The UPS manufacturer provides the following ready-made output tie solutions for parallel UPS System:
Part
Type
Description
1025476
SPM 60-2
Wall-mounted tie cabinet with MBS up to 2 UPS 40-60 kVA
1023540
SPM 80-4
Floor-standing tie cabinet with MBS up to 4 UPS 40-80 kVA
1024687
TC 120-3
Floor-standing tie cabinet up to 3 UPS 100-120 kVA
1024506
TC 160-3
Floor-standing tie cabinet up to 3 UPS 160 kVA
9.1 System Parallel Module
The SPM tie cabinet () provides the UPS connection terminals for the shared load bus. It also
enables the make-before-break transfer of the load to the system bypass. This can be used for
service or test purposes.
The available SPM tie cabinets have the following maximum power ratings:
SPM type
UPS rating
SPM bypass rating
SPM voltage rating
SPM9390-80kVA-4UPS 1-4 x 80 kVA 320 kVA
230/400VAC 50/60 Hz
X2 and X4 input terminals have a five-wire connection (L1, L2, L3, N, and PE). Power cables
with copper conductors should be used to fit the terminals. The wiring shall be done according
to the wiring diagram. The terminals and cable routing is shown it the figure below.
Auxiliary contact information of the system bypass switch enables a safe transfer of the load.
Pay attention that the signal cable of the bypass switch aux. contact is wired correctly to
the UPS modules: the polarity of the signal must be the same for all parallel connected UPS
modules because the signal sensing is done against the ground.
Note!
UPS modules should get a minimum of 10 ms leading closed-contact signal when the
system bypass switch is turned from UPS to BYPASS position.
Figure 35.
Cable routing of the SPM9390-80kVA-4UPS tie cabinet.
