SunPower recommends the use of open-circuit voltage
temperature coefficients listed on the datasheets when
determining Maximum System Voltage.
4.0
Electrical Connections
Modules may be connected in series and/or parallel to achieve
the desired electrical output as long as certain conditions are
met. Please use only the same type of modules in a combined
source circuit.
The connectors on SunPower modules ship with a locking
safety clip, which once connected requires the use of a tool to
disconnect
module-to-module
against untrained personnel disconnecting the modules when
under load, in anticipation of a change considered in the next
update of IEC 61730.
SunPower recommends that all wiring be double insulated with
a minimum rating of 85º C (185° F). All wiring should use
flexible copper (Cu) conductors. The minimum size should be
determined by the applicable codes. We recommend a size not
2
less than 4mm
. The insulation type should be appropriate for
the type of installation method used and must meet SCII
(Safety Class II) and IEC 61730 requirements.
4.1 System & Equipment Grounding
Please refer to the applicable regional and local codes on
grounding PV arrays and mounting frames for specific
requirements (e.g. lightning protection).
Module Types
New SPR
modules are compatible with Transformer Less
E & X series
(TL) inverters, when used as an ungrounded PV source.
No frame or system grounding Requirements (including functional
frame grounding)
E Series:
SPR-EYY-ZZZ SPR-EYY-ZZZ-BLK SPR-EYY-ZZZ-COM
X Series:
SPR-XYY-ZZZ SPR-XYY-ZZZ-BLK SPR-XYY-ZZZ-COM
Note: If you are installing an older Module Type than above
mentioned, please refer to different/previous Safety and
Installation Manual.
If you are doing a Frame grounding connection, avoid the direct
contact between Aluminium and Copper using an intermediate
metal like steel or tin.
4.2 Series Connection
The modules may be wired in series to produce the desired
voltage output. Do not exceed the maximum system voltage.
4.3 Parallel Connection
The modules may be combined in parallel to produce the
desired current output. Series string must be fused prior to
combining with other strings if the resulting maximum reverse
current exceeds the fuse rating as shown in the datasheets.
Bypass diodes are factory installed in the modules. Please
refer to the applicable regional and local codes for additional
fusing requirements and limitations on the maximum number of
modules in parallel.
5.0
Module Mounting
The SunPower Limited Warranty for PV Modules is contingent
upon modules being mounted in accordance with the
requirements described in this section.
connections.
This
defends
SUNPOWER CORPORATION
Safety and Installation Instructions - Document 001-15497 Rev I
5.1 Site Considerations
SunPower modules should be mounted in locations that meet
the following requirements:
Operating Temperature: All SunPower modules must be
mounted in environments that ensure SunPower modules will
operate within the following maximum and minimum operating
temperatures:
Maximum
Operating
Temperature
Minimum
Operating
Temperature
Care should be taken to provide adequate ventilation behind
the modules, especially in hot environments.
Design Strength: SunPower modules are designed to meet a
maximum positive (or upward, e.g. wind) and negative (or
downward, e.g. static load) design pressure of 2400 Pa
2
(Pascals; 245 kg/m
) when mounted in all of the mounting
configurations specified in Section 5.2. A design strength of
2400 Pa corresponds approximately to a wind speed of 200
km/h (125 mph).
SunPower modules are designed to meet a maximum negative
(or downward, e.g. snow load) of 5400 Pa (Pascals; 550 kg/m
for the following mounting configurations only when mounted in
adherence to Section 5.2 below. 5400 Pa design strength has
been verified by SunPower and certified.
1)
72 cell modules with dimensions of (1559mm x
798mm) meet 5400 Pa in the following mounting
configurations described in Section 5.2 below
a.
Frame Holes
b.
Pressure Clamps or Clips
c.
End Mount
2)
96 cell modules with dimensions of (1559mm x
1046mm) meet 5400 Pa in the following mounting
configurations described in Section 5.2 below
a.
Frame Holes
b.
Pressure Clamps or Clips
When mounting modules in snow prone or high wind
environments, special care should be taken to mount the
modules in a manner that provides sufficient design strength
while meeting local code requirements.
Additional authorized Operating Environments:
Modules can be mounted in the following aggressive
environment according to the test limits mentioned below
Salt mist corrosion testing: IEC 61701 Severity 6
available yet)
Ammonia Corrosion Resistance: Concentration : 6,667ppm
Excluded Operating Environments:
Certain operating environments are not recommended for
specific SunPower modules and are excluded from the
SunPower Limited Warranty for these modules.
No SunPower module should be mounted at a site where it
may be subject to direct contact with salt water, or other
aggressive environment.
+85°Celsius,+185° Fahrenheit
-40 Celsius, -40 Fahrenheit
2
(Highest
)