11
5
Connection
5.1
Wiring Cables Cross-
sections
For connection use copper wires only,
suitable for minimum 75°C. Wiring
terminals shall be marked according to
best industry practice to indicate proper
connection to and from the DC-UPS.
Table 1 - Cable cross-sections to be used for
wiring
Connect
to
Terminal
Type
Solid
(mm
2
)
Stranded
(mm
2
)
Mains
Screw
0.2 - 2.5 0.2 - 2.5
Load
Screw
0.2 - 2.5 0.2 - 2.5
Battery
Screw
0.2 - 2.5 0.2 - 2.5
Signals
Push in
0.2 - 1.0 0.2 - 1.0
Connect
to
AWG
Torque
(Nm)
Stripping
Length
(mm)
Mains
26 - 12
0.5 - 0.6
7
Load
26 - 12
0.5 - 0.6
7
Battery
26 - 12
0.5 - 0.6
7
Signals
24 - 20
0.5 - 0.6
11
5.2
Mains Input
AC or DC mains input is connected via
the terminals at the bottom of the DC-
UPS.
Figure 5.1 - Mains input connection
5.2.1
Primary side protection
To switch on / off the device, a proper
disconnection device must be installed on
the mains connection. This function can be
performed by the recommended primary-
side line protection, either a delayed Fuse
or an MCB, curve C.
The device is also protected against
device faults. by an internal fuse.
Figure 5.2 – Primary side protection
If, due to a device fault, the
internal fuse trips, the device
must not be opened. It must be
returned for factory inspection.
Un-authorized opening or
repairing of the device is not
allowed and would void the
guarantee coverage.
5.2.2
Mains connection
The DC-UPS can be operated on AC
single-phase and DC power grids in
accordance with the rated input voltage.
Connection is via the input L/+ N/–
PE
terminals.
Figure 5.3 – Mains connection
Summary of Contents for DCU150M1224S
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