Last revised: December 2011
8
Always work under dry conditions, both for the modules and tools.
Do not install the modules where there may be flammable gases or vapors, since sparks
may be produced.
Avoid electric discharges when installing, wiring, starting up or carrying out maintenance
work on the modules.
Do not touch the terminals while the module is exposing to light. Provide the installation
with suitable protection devices to prevent a discharge of 30 or more direct current
volts from any person.
Limitation in Connection
IEC
IEC
IEC
IEC
The IEC 61730 certificate of these modules guarantees their insulation up to a DC voltage of
1000 V. (IEC 61730 Standard).
UL
UL
UL
UL
The UL 1703 certificate of these modules guarantees their insulation up to a DC voltage of
600 V. (UL 1703 Standard).
However, a cable with a suitable cross section must be used for conducting the sum of the
currents as generated by the modules. A series protection fuse of 15A is recommended for
each string when module strings are parallel connected.
In any event, BenQ Solar recommend the PV conductor, which cross section is 4 mm
2
.
External connection boxes will be used to enable greater cable cross section area for long
distance transmission.
The modules are qualified for the application class A: Hazardous voltage (IEC 61730: higher
than 50V; EN 61730: higher than 120V), hazardous power applications (higher than 240W)
where general contact access is anticipated.
Shadow
Shadow
Shadow
Shadow e
ee
effect
ffect
ffect
ffect
The shadow or hot spot effect is caused by an isolated shadow on one or several module cells
while the rest are receiving high radiation. This situation must be solved by removing the
cause of the shadows. The three protection diodes described in the junction box are provided
to prevent damage to the cells.
Maintenance
Inspect all modules annually for safe electrical connections, sound mechanical connection, and
freedom from corrosion. Periodically clean glass and the module surface only with a soft cloth
or sponge using mild detergent and water. Fingerprints may be removed with standard glass
cleaner. Do not use harsh cleaning materials such as scouring powder, steel wool, scrapers,
blades, or other sharp instruments to clean the glass surface of the module. Use of such
materials will invalidate the product warranty.
