Huawei SUN2000-600W-P Quick Manual page 5

Installed on a PV Module Frame – Frame Mounting Bracket (Front-mounted)
Frame mounting bracket
PV module
3
Installing the Optimizer Cables
Ensure that the input (IN) and output (OUT) cables of the optimizer are correctly connected. If
they are reversely connected, the device may be damaged.
1. Connect the optimizer
input (IN) cable to
the PV module
connection box.
PV module connection box
Resistance
0.9 kΩ ≤ R1 ≤ 1.1 kΩ The optimizer is normal.
R1 < 0.9 kΩ
1.1 kΩ < R1
2. Connect the positive probe of the multimeter to the positive
output terminal of the optimizer and the negative probe to the
negative output terminal. Check the output voltage and
resistance of a single optimizer.
Cause
If the probes of the
multimeter are correctly
connected, the optimizer is
faulty.
The sunlight is weak.

The optimizer input is not

connected.
The optimizer output is

connected to the PV
module output.
The optimizer is faulty.

Do not press the optimizer

mounting ear against the
positioning pole of the frame
mounting bracket.
Purchase the frame mounting

bracket separately from Huawei.
Install the PV module after the

optimizer is installed.
The voltage V1 is 0 V.
•
The resistance R1 is 1 kΩ (±10%).
•
If the probes are reversely connected,
the measured resistance is less than
the resistance measured when the
probes are correctly connected, which
might be less than 0.9 kΩ.
Suggestions
N/A
Replace the optimizer.
1. Measure the resistance when the sunlight is
sufficient.
2. Connect the optimizer input power cables.
3. Correct the optimizer cable connection.
Connect the optimizer input power cables to
the output cables of the PV module.
4. If the resistance is still abnormal, replace
the optimizer.
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