Emerson U/300/S/12P Manuale Utente
52 Chapter 7 “1+N” System
HIPULSE U UPS Single Module And “1+N” (Expandable) 160/200/300/400kVA User Manual
7.2.2 Cabinet Installation
Place the UPS modules side by side and interconnect as shown in Figure 7-1.
Q5
Parallel
board
J5
Q5
并机电缆
并机电缆
Bypass
mains supply
Maintenance bypass switch Q3
Bypass switch Q2
DC bus
Rectifier
Inverter
Static switch
Input switch Q1
Input mains
supply
Battery 1
BCB 1
Parallel cable
Bypass
mains supply
Input mains
supply
Output
switch Q5
UPS 1
output
output
Ext. Sw out
UPS 2 output
Parallel
board
J5
Output
switch
Q5
Ext. Sw out
UPS 6
output
Parallel board J5
Ext. Sw out
Distribution panel
Load
Maintenance bypass switch Q3
Bypass switch Q2
DC bus
Rectifier
Inverter
Static switch
Input switch Q1
BCB 2
Parallel cable
Battery 2
Input
distribution
Bypass side
Bypass side
Distribution
of load
Figure 7-1 “1+N” system block diagram
7.2.3 Protective Devices
Refer to the instructions supplied in 3.1.6 Protective Devices.
Note: Use of residual current detectors (RCDs) on UPS unit inputs requires installation of a common device only on
the system bypass mains.
the system bypass mains.
7.2.4 Power Cables
Refer to the instructions supplied in 3.1 Power Cabling.
Note: The length and specification of power cables including the bypass input cables and UPS output cables should
be the same. This facilitates load sharing when operating in bypass mode.
be the same. This facilitates load sharing when operating in bypass mode.