There are two AC connector brands for inverter, VACONN and WIELAND. As is Figure 3.4.1-1
Grade Description
A O.D.
B
C Bare Wire Length
Figure 3.4.1-4
A
B
C
3.4.2 DC Side Connection
10mm
fasten screw cap clockwise
Fastening three screws
to ensure each screw head
is not exceeding the surface
Figure 3.4.1-1
10mm
Inverter
fasten screw cap clockwise
Cable specification of AC side is showed as Figure 3.4.1-4.
(1)
damage the unit.
(2)The open circuit voltage of the PV strings cannot exceed the maximum input voltage of the inverter.
(3)Only DC connectors provided by us are permitted to use.
(4)The positive and negative pole is forbid to connect PE wire (Ground wire), otherwise, it will damage the unit.
(5)Don't connect positive or negative pole of PV string to PE wire. Otherwise, it will cause damage to inverter.
Before connecting the PV strings, please ensure the plug connectors have the correct polarity. Incorrect polarity could permanently
Installation instruction of WIELAND series is referred to Figure 3.4.1-3.
VACONN Series WIELAND Series
Installation instruction of VACONN series is referred to Figure 3.4.1-2.
Figure 3.4.1-2
Figure 3.4.1-3
05 06
A
B
C
Inverter
3.4 Electrical Connection
3.4.1 Connection to grid (AC side Connection)
(1) Check the grid voltage and frequency if it can comply with the required voltage and frequency of inverter connection.
(2) It is suggested that the breaker or fuse will be added in the AC side, its current should be over 1.25 times of rated current.
(3) Measure the impedance of neutral wire and ground wire to make sure it’s less than 10 ohm.
(4) Disconnect the breaker or fuse between the inverter and the utility.
(5) Connect the inverter to the grid as follows:
Figure 3.3.2-7 Figure 3.3.2-8
Screw M3x8
Lock
Figure 3.3.2-4 Figure 3.3.2-5 Figure 3.3.2-6
fasten screw cap clockwise
Fastening three screws
to ensure each screw head
is not exceeding the surface
Conductor Material
Sectional Area
Value
10~12mm
2
2.5~4mm
10mm around
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