15
16
3. Fix the earth wire shall on the machine, illustrated as the below figure.
4. In order to improve the corrosion resistance of the terminal, it is recommended to apply silica
gel on the earth terminal for the corrosion protection after the grounding cable assembly is
completed.
4.3.4 Connecting Inverter To PV Panel
Caution
Make sure the DC switch is turned off before connecting PV string to the inverter.
Make sure PV string polarity confirms with DC connector, otherwise, it will damage the inverter.
Make sure the maximum open circuit voltage (Voc) of each PV string does not exceed the
maximum input voltage of the inverter under any condition(1100V).
Make sure that the maximum short circuit current of each DC input is less than the inverter
allowable limit.
Do not connect positive or negative pole of PV string to earth (PE terminal). Otherwise, it will
permanently destroy the inverter.
Positive wire shall be red, negative wire shall be black.
The minimum insulation resistance to ground of the PV panels must exceed 33.7kΩ
，
there is a risk
of shock hazard if the requirement of minimum resistance is not met.
The GEP series has three PV input area PV1 input, PV2 input, PV3 input, each with MPPT
tracker, therefore the three PV input can be different with each other, including different type of
modules, different numbers of connecting PV strings, different orientation angel of PV modules.
There are four types of DC connectors, DEVALAN, MC4, AMPHENOL H4 and QC4.10 series.
NO.
A
B
C
Name
Cold-pressed terminal
Screw
Yellow and green line
Explanation
M5*12
10~16mm
2
Inverter side
Positive Plug
Negative Plug
PV TOOL
A
B
C
Please use special tools to do crimping
MC4 & QC4.10
Negative connector
Positive connector
Inverter side
DEVALAN SERIES
MC4 SERIES
AMPHENOL SERIES
QC4.10 SERIES
Note: The actual DC connector used is as shown in the accessory box.
DC cable specification:
Value
4~5mm
2.5~4mm
2
About 7mm
Label
A
B
C
Description
External diameter of wire stock
Cross-sectional area of conductor material
Length of bare wire
A
B
C
The installation method of DC connector is shown in the two figures below.
In order to better dustproof and waterproof
the internal inverter, all the DC connectors
provided by accessory bag should be
connected to the inverter. If only some of the
DC connectors are used, the DC connectors
without connection should be blocked with
non-conductive insulator.
Plug with PV waterproof plug
