Goodwe SDT SERIES, User Manual, Page: 6 / 12

DC Cable specification is showed as Figure 3.4.2-2.
DC Cable should use dedicated PV cable
(Suggest using 4mm PV1-F wire).
Please refer to Figure 3.4.3-3 for installation instruction of DC connector .
3.4.4 Earth Terminal Connection
The earth terminal should be added accord-
ing to the requirement of EN 50178. It is neces-
sary that installation person must connect the
terminal to earthing wire.
The earth connecting terminal is on the side
of inverter, illustrated as Figure 3.4.4-1. The
customer should select the right place to
grounding based on site condition.
3.4.5 Wi-Fi Communication
The Wi-Fi communication function is only applied to WiFi module.The detailed configuration
instruction can refer to Wi-Fi Configuration in the accessory box.
After configuration, please browse http://www.goodwe-power.com to create PV station.
Figure 3.4.3-1
Figure 3.4.4-1
Figure 3.4.3-2
Figure 3.4.3-4
Special tools are used to stitching.
MC4 series & QC4.10 series DEVALAN series & AMPHENOL series
Limit buckle can not
crimping the wire
Negative connector
Positive connector
DEVALAN SERIES MC4 SERIES
AMPHENOL SERIES QC4.10 SERIES
There are four types of DC connectors, DEVALAN, SUNCLIX/MC4, AMPHENDL H4 and QC4.10
series. Please refer to Figure 3.4.3-1.
08 07
Grade
A
B
C
Description
O.D.
Conductor Material Sectional Area
Bare Wire Length
Value
4~5mm
2.5~4mm
2
7mm around
A B
C
3.4.3 DC Side Connection
1. Before connecting the PV strings, please ensure the plug connectors have the correct polarity.
Incorrect polarity could permanently 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.
6. Positive cable shall be red, negative cable shall be black.
7. The minimum insulation resistance to ground of the PV panels for SDT series must exceed 33.4K
Ω(R=1000/30mA).There is a risk of shock hazard if the requirements of minimum resistance are
not met.