Technical data

22
3.3 Electrical installation
The connection interface of CPS SCA23/28KTL-DO series inverter:
DC
INPUT 1
AC
OUTPUT
DC
INPUT 2
COMM.
PORT
ANT.
WARNING:
High touch current .
Earth connection essential
before connecting supply.
1 1 2
3 4 5
Figure 3-15 External connection ports
PV1 +
PV1
PV2 +
PV2 L1 L2
L3
N
6 6
6 6
7 8
Figure 3-16 Internal connection points
1. Knockout holes for DC input cable, 1-1/4” or 1”
2. Knockout hole for AC output cable, 1-1/4” or 1”
3. External ground connection point
4. Knockout hole for communication cable, 3/4”
5. Wireless communication antenna port (For optional Zigbee
communication)
6. DC input terminal block
7. AC output terminal block
8. Internal ground connection point & grounding studs