Electrical Connections - CanadianSolar CSI Manual

5. Installation
WARNING:
The inverter must be mounted vertically.
4. Lift the inverter and hang it on the bracket, and then slide down to make sure they
match perfectly.
Figure 5.5 Install the inverter
5. If the installation position is high, the inverter cannot be directly mounted on the
mounting plate, and the hoisting rope is hoisted through the two lifting holes.
（The rope needs to meet the load-bearing requirements of this product）.
.12.
Figure 5.6

5.3 Electrical Connections

Inverter designs quick-connect terminal, so top cover needn't open during electrical
connection. The sign meaning located the bottom of inverter, as shown below in table 3.1.
All electrical connections are suit for the local or national standard.
DC input terminal
DC 1 ~ DC 8
ON Switch on the DC switch
OFF Switch off the DC switch
COM1 COM port for monitoring
COM port for Meter
METER
DRM COM port for DRM
Table 5.1 Electrical connection symbols
The electrical connection of the inverter must follow the steps listed below:
1. Switch the Grid Supply Main Switch (AC) OFF.
2. Switch the DC Isolator OFF.
3. Connect the inverter to the grid.
4. Assemble PV input connector to the Inverter.
5.3.1 Grounding
Canadian Solar requires 2 ground protection methods: Through grid terminal connection
and external heat sink connection.
When connect the AC terminal grounding cable, please refer to the contents of 5.3.3.
When connect the heat sink grounding cable, please follow the steps below:
1. Prepare the grounding cable: recommend to use the
copper-core cable.
2. Prepare OT terminals: M6.
Important:
For multiple inverters in parallel , all inverters should be connected to the
same ground point to eliminate the possibility of a voltage potential existing
between inverter grounds.
5. Installation
≥ 16mm²
outdoor
.13.