
4. Installation
4. Installation
.21.
.20.
Figure 4.23 Meter
in
Grid
4.3.8 CT connections(optional)
This inverter has integrated export limitation functionality. To use this function, 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.
Figure 4.24 Direction of CT
4.3.6 Electrical connection diagram
Figure 4.21 Guidance for a Simple Installation of an Inverter Solar Energy System
Isolation switch
Solar supply
main switch
Consumers
mains
(to grid)
Main
switch
MAIN SWITCHBOARD
Circuits not
protected by
RCDs
Circuits Protected
by RCDs
Isolation device
Inverter with
integral grid
Protection device
Solar
(PV)
array
1
1
2
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.
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.
4.3.7 Meter Connection(optional)
Figure 4.22 Meter
in
Load
1
5 6 7 8
MENU
1600 imp/kWh
220V~10(60)A
T1
T2
T3
DDSD1352
L
N
L
´
N
´
Communication
Grid
Load
A B
1
5 6 7 8
MENU
1600 imp/kWh
220V~10(60)A
T1
T2
T3
DDSD1352
L
N
L
´
N
´
Communication
Grid
Load
A B
Inverter
CT
Input
L
N
L
N
Load
N
L
CT
Grid
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.