of I
and V
marked on the module should be multiplied by a factor
sc
oc
of 1.25 when determining component voltage ratings, conductor
ampacities, fuse sizes, and size of controls connected to PV output. An
additional 1.25 multiplier may be required by certain local codes for
sizing fuses and conductors. 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.
When not controlled by local regulation, SunPower recommends only
mating the same make, model and system rated connectors in a PV
system. SunPower recommends that all wiring be double insulated
with a minimum rating of 85° 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 less than 4mm
insulation type should be appropriate for the type of installation
method used and must meet SCII (Safety Class II) and IEC 61730
requirements. To minimize the risk from indirect lightning strikes
(Voltage surges), the system should be designed to avoid loops in the
wiring.
SunPower recommends a conservative minimum cable bend radius of
equal to or greater than 40mm and must not be bent on the direct exit
of the connector or junction box. Avoid exposure of electrical
connections to direct sunlight and do not place the connector in a
location where water could easily accumulate. Installers must refer to
connector manufacturers instruction for further installation and
connection 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
SPR E, X , P series modules and our Maxeon and Performance Product Line
are compatible with Transformer Less (TL) inverters, when used as an
ungrounded PV source.
No frame grounding requirements (including functional frame grounding),
but may be subjected to local regulation.
Functional system grounding of a polarity (positive or negative) is optional
and may be subject to local requirements
E Series:
SPR Eyy zz SPR Eyy zzz BLK SPR Eyy zzz COM
X Series:
SPR Xyy zzz SPR Xyy zzz BLK SPR Xyy zzz COM
P Series/ Performance Product Line:
SPR Pyy zzz COM SPR Pyy zzz SPR Pyy zzz BLK SPR
SPR
P3
zzz SPR
P3
zzz BLK
Maxeon Product Line:
SPR
MAX2
zzz SPR
MAX2
zzz COM SPR
BLK SPR
MAX3
zzz COM SPR
MAX5
Note: If you are installing an older Module Type than above
mentioned, please refer to different/previous applicable Safety and
Installation Manual.
If you are doing a frame grounding connection, avoid the direct
contact between Aluminum and Copper using an intermediate metal
like stainless 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 specified in
module datasheet.
©April 2020 SunPower Corporation. All rights reserved. Specifications included in this manual are subject to change without notice.
2
. The
P3
zzz COM
MAX3
zzz SPR
MAX3
zzz
zzz COM
Safety and Installation Instructions Document 001 15497 Rev T
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.
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
+85 °C (+185 °F)
Temperature
Minimum Operating
40 °C ( 40 °F)
Temperature
Care should be taken to provide adequate ventilation behind the
modules, especially in hot environments.
Shading: Modules should be installed so that permanent shading of
cells is avoided and partial shading that may occur during certain times
of the day or year is minimized.
Shading may induce in certain cases strong energy production
reduction, even in case of small shading and should be avoid as much
as possible, specially at mid day when the production is maximum.
Design Strength: SunPower modules are designed to meet a positive
or negative (upward and downward, e.g. wind) withstanding test
pressure load and a negative (or downward, e.g. static load or snow
load) withstanding test pressure load, as per IEC 61215, when
mounted in the configurations specified in Section 5.2 and Tables 1.2
or 1.3 below.
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
Ammonia Corrosion Resistance: IEC 62716 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.
Modules should not be installed near flammable liquids, gases, or
locations with hazardous materials; or moving vehicules of any type.
Performance Series Mounting Orientation
Performance Series (P Series) modules are designed to be installed in
landscape orientation. In landscape orientation, P series modules
maintain higher power under row to row shading and edge soiling.
5.2 Mounting Configurations
SUNPOWER CORPORATION