Installation
72
EN
2.11 ELECTRIC CONNECTIONS AND DIAGRAMS
The wiring diagrams of RIELLO
NXC/NXH devices are sup-
plied with the unit. Please refer to them if necessary.
NXC/NXH leaves the factory fully wired and requires
only a connection to the electrical power grid, the installa-
tion of a padlockable disconnecting switch, and connections
to any accessory components.
In order to access the control panel's terminal blocks:
• set the system's main switch to its "OFF" position, and the
device's main switch to its "0" (off) position
ON
OFF
• loosen the fastening screws using a screwdriver with ma-
gnetic tip
• slide the panel downward
• pull the panel towards you.
NXC 017-021
2
1
2
1
1. Power connection input
2. Auxiliary connection inputs
2
1
2
1
• route the power cable through the cable gland (2) and fa-
sten it
• route the cables for connecting the auxiliary components
through the cable glands (1) and fasten them
NXC 017-021
For the sizing of the electrical power cables, use the following
table:
NXC
017
021
Electrical power supply
V/Ph/Hz+N
400/3/50+N+PE
Permitted voltage
V/Ph/Hz+N
360 - 440
Maximum total power
consumption
kW
7.8
9.1
Maximum total current
consumption
A
13
16
Power cable
n. sq.mm
5 x 6
Type
H07RNF
NXC/NXH
026
033
040
Electrical power supply
V/Ph/Hz+N
400/3/50+N+PE
Permitted voltage
V/Ph/Hz+N
360 - 440
Maximum total power
consumption
kW
11.0
13.8
17.5
Maximum total current
consumption
A
20
24
30
Power cable
n. sq.mm
5 x 16
4x16
Type
H07RNF
Complete the electric connections, refit all components by
performing the described operations in reverse order.
Check that:
• the characteristics of the electrical network are suitable
for the device's usage values, also taking into account any
other machinery that will be operating alongside it;
NXC 026-040
NXH 026-040
NXC 026-040
NXH 026-040