SMA Solar Technology AG
Electrical Connection of the Automatic Switch Box S
Technical Description
SBU2200-TEN083320
73
8.2.1 PV Feed-In Counter (X1/PV Meter)
Connect the X1/PV Meter connection to the feed-in counter for the PV system.
The cross-section of the cables depends on
the upstream fuse. Use a conductor cross-
section of max. 6 mm². The terminals are
designed as spring-type terminals. The
nominal AC current is 20 A.
The protective earth conductor (PE) is inserted
into the PE terminal of the X1/PV Meter in
order to connect the Automatic Switch Box S
to the equipotential bonding bar of the
building.
To feed in and connect the AC cables, proceed as follows:
1. Select a suitable cable opening on the
bottom of the housing.
2. Strip away the outer sheath of the cable
to the point where it matches the cable
length to be installed in the device.
3. Use a pin-shaped object to prick a hole
in the rubber membrane at the feed-
through position.
Do not use a knife or cutting pliers for
this.
4. Thread the prepared cable through the
small hole you just made in the elastic
membrane.
The membrane must tightly reseal
around the cable sheath.
5. Establish a suitable level of strain relief
for the cable outside of the Automatic
Switch Box S.
6. Route the wires to the connection
terminals.
7. Strip the insulation from the conductor
ends.
