Electrical Connection Diagram; Meter Connection(Optional); Ct Connections(Optional) - CanadianSolar CSI Series Installation And Operation Manual

4. Installation

4.3.6 Electrical connection diagram

Refer to figure 4.21, which is a simple guidance for installing a solar system with PV inverter.
A DC isolator is required to be installed in the system between PV panels with inverter.
MAIN SWITCHBOARD
Main
switch
Consumers
1
mains
(to grid)
2
Circuits not Circuits Protected
protected by by RCDs
RCDs
Figure 4.21 Guidance for a Simple Installation of an Inverter Solar Energy System
1. The RCD should be in parallel connection between the consumers mains and the solar supply.
2. More than one RCD may be used. Each RCD can protect one or more circuits.

4.3.7 Meter Connection(optional)

The inverter has intergrated export limitation functionality.
To use this function a power meter or a CT must be installed if use the power meter it should ,
be installed in the load side or in the grid side Because the meter used in the single-phase
inverter is divided into two types: single-direction meter, and dual-direction meter.
Therefore,
the wiring method is divided into two cases.
The dual-direction meter corresponds to the meter
in grid connection mode; the single-direction meter corresponds to the meter in load connection
mode.
see Figure 4.22 and 4.23. After the inverter power on please set the corresponding
configuration as sections 6.5.11.1.2 and 6.5.11.1.3.
Communication
DDSD1352
220V~10(60)A
MENU
L
Figure 4.22 Meter in Load
.20.
Isolation device
Solar supply
main switch
Inverter with
1
integral grid
Protection device
Isolation switch
,
,
,
5 6 7 8
A B
T1 T2 T3
1 1600 imp/kWh
L´ N N´
Grid
Load
Solar
(PV)
array

4.3.8 CT connections(optional)

This inverter has integrated export limitation functionality. To use this function, a power
meter or a CT must be installed if use the CT please reference below picture. The CT
should be fitted around the live conductor on the grid side of the main incoming consumer
unit. Use the directional flow indication arrow on the CT to ensure it is fitted in the correct
orientation. The arrow should be pointing towards the grid, not the load. when the inverter
power on, please set the corresponding configuration as sections 6.5.11.1.4.1 and 6.5.11.1.4.2.
,
4. Installation
Communication
5 6 7 8
A B
DDSD1352 T1 T2 T3
220V~10(60)A
1
1600 imp/kWh
MENU
L L´ N N´
Load
Figure 4.23 Meter in Grid
, ,
Inverter
CT Input L N
L
CT
N
L N
Load
Figure 4.24 Direction of CT
Grid
Grid
.21.