External Ground Connection; Max. Overcurrent Protection Device (Ocpd); Inverter Monitoring Connection - CanadianSolar CSI Series Installation And Operation Manual

4. Installation
d) Connect the AC grid terminal connector to the inverter. Small click will confirm
connection.
Figure 4.18 Connect the AC Connector to the Inverter
Note: Connection for Split phase grid.
When connect to 208/220/240V split phase, please connect L1 to "L" terminal,
L2 to "N" terminal. Also connect earth to ground terminal.

4.3.3 External ground connection

An external ground connection is provided at the right side of inverter.
Prepare OT terminals: M4. Use proper tooling to crimp the lug to the terminal.
Connect the OT terminal with ground cable to the right side of inverter. The torque is
20 in-lbs (2Nm).
Figure 4.19 Connect the external grounding conductor
.18.
4.3.4 Max. over current protection device (OCPD)
To protect the inverter's AC grid connection conductors, Canadian Solar recommends
installing breakers that will protect against overcurrent. The following table defines OCPD
ratings for the Canadian Solar 4-5kW single phase inverters.
Rated output
Inverter
voltage(V)
CSI-4KTL1P-GI-FL 220/230
CSI-5KTL1P-GI-FL 220/230
Table 4.3 Rating of grid OCPD

4.3.5 Inverter monitoring connection

The inverter can be monitored via Wi-Fi or GPRS. All Canadian Solar communication
devices are optional (Figure 4.20). For connection instructions, please refer to the
Canadian Solar Monitoring Device installation manuals.
GPRS monitoring
Router
Wi-Fi monitoring
Wi-Fi box
Wi-Fi monitoring
Figure4.20 Wi-Fi or
GPRS
communication function
4. Installation
Rated output Current for protection
current (A) device (A)
18.2/17.4 25
22.7/21.7 30
Smart phone monitoring
Internet
Web server
PC monitoring
.19.