SMARTZONE G6 IRUPS USER MANUAL
49
Figure 60: Parallel System Power/Control Connections
To ensure that all UPS units in the system are equally utilized and comply with relevant
wiring rules, follow the requirements below:
•
All UPS units in the system must have same SKU.
•
The input of all the UPS units must be connected to a common input bus.
•
All UPS units in the system must be connected to the same bypass source.
•
All UPS units in the system must be connected to a common output bus.
•
The length and specification of all UPS power cables (main input, bypass input
and the output cables) should be the same type and same length. This helps to
facilitate load sharing between the UPS units when operating in all working modes.
•
The UPS units should be physically located near each other to minimize the load
sharing effects due to environmental conditions.
Parallel Mode Wiring
Following the power and control wiring as indicated in Figure 60.
1. Connect the UPS Parallel System to the input source:
117.
Before wiring together, make sure each UPS input breaker is in the “off” position
and there is no output from each UPS unit.
118.
Connect the Mains inputs of all UPS units in the parallel system to a common
source with the same cable type and cable length (see Figure 58).
119.
If single source, connect the bypass inputs of all UPS units in the parallel system
to the same common source as the Mains inputs with the same cable type and cable
length (see Figure 58).
120.
If dual source, connect the bypass inputs of all UPS units in the parallel system
to a common source with the same cable type and cable length (see Figure 58).
1. Connect the UPS Parallel System to the common output bus:
Summary of Contents for Smartzone U01N11V
Page 66: ...SMARTZONE G6 IRUPS USER MANUAL 65 Appendix F What s Included 5 10kVA EBP UVP240 ...
Page 67: ...SMARTZONE G6 IRUPS USER MANUAL 66 Appendix G What s Included 10 20kVA EBP UVP480 ...
Page 68: ...SMARTZONE G6 IRUPS USER MANUAL 67 Appendix H What s Included Maintenance Bypass Switch UMB20K ...