24
REC Installation Manual - REC Alpha Panels - IEC 61215 /61730
Rev 13 - 11.22
ANNEX 2: INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS
This section is applicable to all REC products referred to in this installation manual.
Module Level Power Electronics (MLPE) is the name given to the range of panel-level components that can be installed in PV system circuits
installed on or in buildings to reduce shock hazard for emergency responders. MLPE devices can be supplied pre-installed by panel manufacturers
or as a ‘retro-fit’ system made by third-party manufacturers.
MLPE devices may be used on REC solar panels where desirable or mandatory (note that the certification testing of solar panels does not include
testing with MLPE devices). When installing an MLPE device directly onto the frame structure of an REC solar panel, follow the instructions
provided by the device manufacturer and the instructions specific for REC solar panels given below. Failure to follow the manufacturer and the REC
instructions may invalidate the warranty.
INSTALLATION
i) Installation
• MLPE
devices
must be suitable for the location where the solar panels installed. Observe any limitations set by the MLPE manufacturer. (e.g.,
minimum mounting gap between MLPE and rooftop).
• When attaching an MLPE
device
directly to the solar panel frame, follow the MLPE manufacturer’s instructions to ensure optimum mounting
of the device and prevent any slippage during operation.
• When installing an MLPE device to the panel frame, ensure to leave a gap of minimum 15 mm between the MLPE device and any further part of the
module architecture to ensure there is sufficient airflow around the device, e.g., between the MLPE device and junction box and/or support bar.
• Wherever possible, the installation of the MLPE device should not cover the product label on the rear of the panel.
• MLPE
devices
may also be attached to the mounting construction. In such cases, refer to the instructions provided by the manufacturer.
CAUTION
• To avoid damage to the panel and to allow for thermal expansion, there must be a minimum gap of 2.5 mm between the MLPE device and the
panel backsheet.
• The mounting holes in the panel frame must not be used for the installation of MLPE devices.
• The drilling of extra holes in the frame is not permitted and will invalidate the panel warranty.
CONNECTION
• First ensure the installation of the MLPE
device
is secure and safe.
• Following the device manufacturer’s instructions to connect the cables from the MLPE
device
to the solar panel correctly (usually positive to
positive [+ to +] and negative to negative [- to -]).
• Connection to the next panel in the array should be done from the ‘free’ cables.
SAFETY
• Immediately disconnect the device if there is a problem during installation.
