Installation
11
3.7
Connecting Mains and Load
When connect the mains supply to the UPS refer to
Figures 6
through
8
. Choose the connection
method according to the input supply characteristics. Connections must meet these requirements:
• The installer must provide circuit breaker protection according to local codes. The mains discon-
nect should be within sight of the UPS or have an appropriate lock-out. Maintain service space
around the UPS or use flexible conduit.
• The installer must provide output distribution panels, circuit breaker protection, or emergency
disconnect switches according to local codes. Output circuits must not share a common conduit
with input circuits or any other wiring.
• The utility may be derived from a single-phase or three-phase source.
Figure 6
Input and output connections with single source, single-phase input supply
Figure 7
Input and output connections with dual source, single-phase input supplies
Figure 8
Input and output connections with single source, three-phase input supply
Mains 1 Input ~
Mains 2 Input ~
Output ~
L1
L2
GND
BY
230V Input
L3
N
Parallel
Connection
N
GND
L
S1
S2
N
GND
L1
Factory-Supplied Jumper
(W36)
230V
230V UPS Input
230V
230V Bypass Input
Mains 1 Input ~
Mains 2 Input ~
Output ~
L1
L2
GND
BY
L3
N
Parallel
Connection
N
GND
L
S1
S2
N
GND
L1
Factory-
Supplied
Jumper
(W35)
Factory-Supplied Jumper (W34)
400V Input
230V
Mains 1 Input ~
Mains 2 Input ~
Output ~
L1
L2
GND
BY
L3
N
Parallel
Connection
N
GND
L
S1
S2
N
GND
L1
