4.3.2 AC circuit breaker and leakage current protection device
Please install an independent two pole circuit breaker to protect the inverter and make sure it is
safe to disconnect it from the grid.
In addition to the built-in RCMU, an external RCD is required to ensure that the inverter system
does not carry DC residual currents. To avoid tripping, the types A can be used.
Note: it is not recommended that multiple inverters share a single circuit breaker.
The integrated leakage current detection device of the inverter can detect external leakage current
in real time. When the detected leakage current exceeds the limit value, the inverter will quickly
disconnect from the grid. If the leakage current protection device is installed externally, the action
current should be 300mA or higher.
4.3.3 DC Side Connection
1. Before connecting the PV strings, please ensure the plug connectors have the correct polarity.
Incorrect polarity has the potential risk to cause permanent damage to the inverter.
2. The open circuit voltage of the PV strings cannot exceed the maximum input voltage of the
inverter.
3. Only the DC connectors supplied by the manufacturer are suitable for use.
4. The positive and negative pole should not be connected to the PE wire (ground wire). Not
following this instruction may cause damage to the inverter.
5. Red wire represents positive, black wire represents negative.
6. For the GE series the minimum insulation resistance to the ground of the PV panels must
exceed 20kΩ(R=600/30mA). There is risk of electric shock if this minimum resistance requirement
is not met.
Inverter Model
GEP4.6-1C-10/GEP5.0-1C-10
GEP7.0-1-10/GEP8.5-1-10
GEP9.0-1-10/GEP10-1-10
Recommended Circuit Breaker Specifications
32A
50A
63A
Please use solar PV cable in DC
connection.(4mm PV1-F wire recommended)
There are four types of DC connectors, DEVALAN, MC4, AMPHENDL H4 and QC4.10 series.
DEVALAN SERIES
MC4 SERIES
AMPHENOL SERIES
QC4.10 SERIES
Note: The actual DC connector used is 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
Please use special tools to do crimping
MC4 & QC4.10
DEVALAN & AMPHENOL
Do not crimp wire
into the limit buckle.
Negative connector
Positive connector
Inverter side
The installation method of DC connector.
Step 3:
Connect the assembled AC cables into AC terminals with fastening torque about
2.0-2.5N.m. Then lock the cover and screw the cap.
Screwing torque 2.0-2.5N.m
Note:There is risk of burning if the DC connector is not connect tightly,you can hear the
“Click” sound to confirm the connectivity.
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