Huawei PowerCube 500 User Manual page 42

PowerCube 500 (CPS300-N18A1H)
User Manual
Category
Conducting
wire
Wiring terminal
Electrical
specifications
Table 4-5 PV module troubleshooting
Symptom
No output.
Issue 02 (2019-08-30)
Check Item
tilted.
Check whether
PV module
supports are
stable.
Check whether
conducting
wires are
damaged or
cracked.
Check whether
the wiring
terminals are
connected
securely.
Check whether
the open-circuit
voltage of a PV
module is
normal.
Possible Solution
Cause
 
The cables
to PV
modules are
not

connected
properly.
 PV modules
are faulty.


Copyright © Huawei Technologies Co., Ltd.
Check Maintenance
Method Condition
tilted.
Shake the Bolts are loose
supports and the
slightly. supports are
unstable.
Visual Conducting
observation wires are
damaged or
broken.
- Wiring
terminals are
loose.
Multimeter Under normal
sun exposure
(800 W/M
illumination
intensity
recommended),
ensure that the
open-circuit
voltage is at
least 30% lower
than the
nominal value.
Check whether the cables are loose, disconnected, or
broken. If so, reconnect the cables properly or replace
them.
Use a multimeter to check whether each PV input has
an output voltage, and use a clamp meter to check
whether each PV input has a current. If no voltage or
current is detected, check the PV modules.
Use a multimeter to check whether each PV module
has an output voltage. If a PV module has no output
voltage, replace it.
Check whether the output voltage of each PV module
4 Preventive Maintenance
Solution
pole.
 Adjust the
tilted base.
Tighten the
loose bolts and
nuts.
Replace any
broken or
damaged
conducting
wires.
Secure the
wiring
terminals.
Replace the PV
module.
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