Page 9
9130 UPS-EN
ENGLISH
2. Installation
2.
Required cable cross-sections
Table 2. Cable cross sections
UPS power rating
5000 VA / 6000 VA
Minimum of section
required
Terminal-block capacity
Phase and neutral solid or
stranded wire
6 mm²
AWG 10
10 mm²
AWG 8
Earthing solid or stranded
wire
6 mm²
AWG 10
10 mm²
AWG 8
2.8 Installation depending on the system earthing arrangement (SEA)
UPS with common Normal and Bypass inputs
(Figure 9)
Change in SEA between upstream and downstream or galvanic isolation required
(Figure 10)
UPS with separate Normal and Bypass inputs
(Figure 11)
Change in SEA between upstream and downstream or galvanic isolation required
(Figure 12)
The transformer is not necessary if:
Normal and Bypass inputs are connected to the same source,
l
and wires cross sections and wires lengths on Input and Bypass inputs are identical,
l
and upstream protection is provided by only one switch with RCD (residual current
l
device) for Input and Bypass inputs.
*
Main low
voltage
switchboard
(MLVS)
Bypass
Bypass
Bypass
Input
Input
Input
Load
Load
Load
Main low
voltage
switchboard
(MLVS)
Main low
voltage
switchboard
(MLVS)
Bypass
Input
Load
Main low
voltage
switchboard
(MLVS)
Output
Output
Output
Output
