Module Installation; Use Of Rails And Clamps - Panasonic EverVolt EVPV Series General Installation Manual

MODULE INSTALLATION

EverVolt modules are designed for
capturing solar radiation and can be
installed where they conform to all
local structural regulations. If installing
EverVolt modules in overhead or
vertical constructions, the installer
must ensure that all local building
codes and regulations specific to such
installations are correctly followed. The
IP rating of the junction box provides a
level of protection that allows modules
to be mounted in any orientation.
There are different options for
securing EverVolt modules depending
on the design of the array. Mounting
hardware is not supplied by Panasonic.
Ensure the mounting structure can
withstand anticipated wind and snow
loads. Follow the mounting hardware
manufacturer's instructions and
recommendations at all times.
• Install modules where they are not
shaded by obstacles like buildings
or trees. Especially pay attention to
avoid partially shading the modules
by objects during the daytime. If
a part of the PV module is always
shaded, hot spot may occur and the
PV module may break down.
• Water stains might be caused
when rain water remains on the
glass surface for a long time. To
avoid water stains, Panasonic
recommends to install modules
at a slope steeper than the water
gradient.
Min. grip length:
1.6 in (40 mm)
Figure 7. Clamp specifications
General Installation Manual
• Modules should be firmly fixed
in place in a manner suitable to
withstand all expected loads,
including wind and snow loads.
• Metals used in locations that are
exposed to moisture shall not be
employed alone or in combinations
that could result in deterioration or
corrosion.

USE OF RAILS AND CLAMPS

Installing the EverVolt modules with
clamps and rails has been found to
comply with UL 61730 requirements
for downward pressure, e.g., snow, of
up to 7000 Pa (4666 Pa design load*)
and upward pressure, e.g., wind, of
up to 4000 Pa (2666 Pa design load*)
according to the following instructions
(*design loads apply a safety factor of
1.5 to the stated test load, e.g., test
load 7000 Pa / 1.5 = 4666 Pa design
load).
When installing on mounting rails,
ensure they run underneath the
module and provide support to the
frame. The positioning of the rail must
ensure that the minimum clamp grip
length and the central point of the
fixation, e.g., the bolt, is fully within the
required clamping zone as indicated on
the following pages.
EverVolt modules must be secured
with a torque between 8.8-18.4 ft-
lb (12 - 25 Nm). Clamp installation
Grip depth:
0.2 - 0.4 in (5 - 10 mm)
Specifications
Grip depth 0.2 - 0.4in (5-10mm)
Min. grip length
See manufacturer's
Torque
Length
1.6in (40mm)
instructions
must be carried out according to
the manufacturer's instructions,
including specific hardware and torque
requirements. Ensure the clamps used
are suitable for the planned installation
and expected system design loads.
• The grip area must not extend onto
the module glass and/or cause cell
shading.
• Avoid the application of excessive
pressure to prevent frame
deformation.
• The module must be secured, e.g.,
clamped, at least once in each
of the four marked zones shown
below (Figure. 8).
1
3
Figure 8. Module quarter division
2
4
9