SUNRI SOLAR SR220-250P SERIES Guide

Mounting Manual
INSTALLATION INSTRUCTION FOR SR220-250P SERIES SOLAR MODULE
230W series solar modules are made of 60pcs of 156mm×156mm crystalline solar cells in series with high efficiency,
high transmission and low iron toughened glasses , anti-aging EVA and high flame-resistant back sheet to laminate,
and anodized aluminum alloy frame. Products have high efficiency, lifespan easy installation, high wind resistance
etc.
Products are made according to national standard GB/T9535-2005（IEC61215-2005）and have passed authority test
center’s examination. Our products can be used in home roof solar systems, PV stations, communication stations,
petrol, ocean, meteorological, traffic and solar building etc.
SR220-250P series solar modules mainly include220W、225W 、230W 、235W、240W、245W、250W
1、Electrical Specification POLY-Si series
PHOTOVOLTAIC MODULE
Model
SR220-250P
Number of cells(pcs)
60
Pmpp(W)
230±3%
Voc(V)
38.0±3%
Isc(A)
8.18±3%
Vmpp(V)
30.4±3%
Impp(A)
7.57±3%
Max series fuse rating(A)
15±3%
Nominal Mass
21.5kg
Package Size
1650mm×992mm×50mm
Cell Size
156mm×156mm
MAX
System voltage
DC1000V
Bypass Diode Rating
45V, 12A,6pcs provided
●The electrical characteristics are within ±10 percent of the indicated values of Isc, Voc and Pmp under test
conditions (irradiance of 100 MW/cm2,AM1.5 spectrum, and a cell temperature of 25℃)
●Under normal conditions, a photovoltaic module is likely to experience conditions that produce more current
and/or voltage than reported at standard test conditions. Accordingly, the values of Isc and Voc marked on this module
should be multiplied by a factor of 1.56 when determining component voltage ratings, conductor ampacity, fuse sizes,

and size of controls connected to the PV output.
●Refer to section 690-8 of the NEC for an additional multiplying factor of 156 percent which may be
applicable.
●Installation should be in accordance with CSA C22.1, Safety Standard for Electrical Installations, Canadian
Electrical Code, Part 1.
2、Appearance character：
No.
Item
Remark
1
Measurement
length：1650mm (64.961inch) width：992mm (39.1inch) height：50mm (1.97inch)
2
Weight
21.5Kg
3
Cell
60 pcs（156mm×156mm）solar cells，6 lines10 rows connected in series and array in matrix.
4
Output cable
4mm2cable with TUV certification，with polarity mark, waterproof, length is 900mm 。
5
Junction box
With6 pcs connector，IP65，max system voltage 1000VDC，max current 12A , with TUV
certification
6
Structure
Front: high transparent toughened glass Front: high transmission toughened glass with 3.2 mm
(1/8inch) height
Back: Polyester
Material ：EVA
7
Frame
Anode oxidation. Aluminum alloy frame Color: Silver
8
Insulated performance
50MΩ
9
Max system voltage
1000V

3、Structure
4、Operating environment
CLIMATE CONDITION
Install the PV module in the following conditions:
●Environment temperature：47℃±2 ℃。
●Operating temperature：-40℃to 85 ℃● Waterproof: don’t dip the modules into the water or continually
explode under the water device or fountain.

●Antisepsis: keep away from salt erode and sulfuration places
5、Mounting and notes
●The modules’ electrical performance in a system is the same. When connected in series, all modules must
have the same amperage. When connected in parallel, the modules must all have the same voltage. Connect
the quantity of modules that match the voltage specifications of the devices used in the system. The modules
must not be connected together to create a voltage that is higher than the permitted system voltage.
●To minimize risk in the event of an indirect lightning strike, avoid forming loops when designing the system.
●Modules must not be fitted as overhead glazing. Ensure that the mounting system can also withstand the
anticipated wind and snow loads.
●Precipitate can run off through small openings on the back side of the module. Make sure that the openings are
not masked after mounting.
●The maximum load on the module must not exceed 2.4kN/㎡.To avoid exceeding the maximum load,
site-specific live loads such as wind and snow should be taken into account.
●The installation of project must be facing north in the southern hemisphere, and facing south in the northern
hemisphere, the electricity will be comparatively lower when the project facing west or east. The incorrect
installation will lead to the loss of power
●The modules, which are connected in series, must be in the same angle, otherwise, it will lose power because
of the difference in sunlight intensity. Solar modules generate the power to the maximum when they are
pointed directly at the sun. For installations where the solar modules are mounted to a permanent structure,
the solar modules should be tilted for optimum winter performance. As a rule, if the system power output is
adequate in the winter, it will be satisfactory during the rest of the year. The module tilt angle is measured
between the solar modules and the ground.
RECOMMENDED TILT ANGLES FOR A FIXED SYSTEM
SITE LATITUDE IN DEGREES
FIXED TILT ANGLE
0o TO 15 o
15 o
15oTO 25o
SAME AS LATITUDE
25oTO 30o
LATITUDE+5 o
30oTO35o
LATITUDE+10 o
35oTO 40o
LATITUDE+15 o
40o+
LATITUDE+20 o

●Avoid installing under the shadow, even the module factory use the bypass diode to decrease the loss of energy,
the shadow will lead to the loss of output power.
6、Grounding
●All module frames must be attached to an earth ground. A qualified electrician must do the ground
connection .The cable which connects the earth must be copper wire with 12AWG.

●Use the holes(5.0mm) marked ' '. To create the conductive connection (frame is anodized), use
Stainless steel M5nut, two Stainless steel cut washer, Stainless steel M5 plain washer, Stainless steel M5
spring washer , M5 copper wire ,and Stainless steel M5 bolt.
1. Copper wires with M5 cupped washer should be placed through the bolt;
2. Put the cut washer through the bolt, and the bolt must be put through the hole fixed in the aluminum frame;
3. Use the nut and cut washer to fix all the parts. The copper wire can not be attached to the aluminum.
●Do not interrupt or influence the conductive connection when making daily maintenance .All the crunodes on
the conductive connection must be fixed. The fastness does not depend on soldering.
7、Suggested maximum number of modules in parallel and in series ●When designing the system,
we recommend that the maximum number of modules in parallel should be no more than four while the
maximum number of modules in series no more than eight.

8、Mounting
●Each module must be securely fastened at a minimum of 8 points(7mm×11.5mm). The frame has been stress
tested for mounting on the long sides. Its short sides must not secure the module.
●We recommend using a torque wrench for installation. The tightening torque(using stainless steel M6 bolts 、
Stainless steel washer and Stainless steel M6 nut ) should be around 15-20Nm.Use the existing holes to secure
the module and do not drill additional holes(doing so would void the warranty).Use appropriate
corrosion-proof fastening material.
●Clearance between the module frame and mounting surface may be required to prevent the junction box from
touching the surface, and to circulate cooling air around the back of the module. If the modules are to be
installed on the roof or wall of a building, the standoff method or the rack method is recommended. Stand-off
method: The modules are supported parallel to the surface of the building wall or roof. Clearance between the
module frames and surface of the wall or roof is required to prevent wiring damage and to allow air to
circulate behind the module. The recommended stand-off height is 115mm. If other mounting means are
employed, this may affect the Listing For Fire Class Ratings.
13
2
Example for mounting the PV modules to the substructure: 1、Stainless steel M8 nut
2、Stainless steel washer
3、Stainless steel M8 t-head bolt
●Installation of the rooftop
When doing installation on roof and building, make sure that the modules are fastened. This will prevent them
from falling down in extreme weather.
Do comply the safety regulations and use appointed secure equipment.
Make sure there is enough ventilation at the back of solar modules to help ease the installation and prevent the
hydrometeor
Make sure there is enough area between the installation planes and the back of the modules; minimum distance:
50mm
9、Wiring
●The modules use thePV-RH701 type junction box. This box, on the back side of the module, is weatherproof
and is designed to be used with standard wiring or conduit connections. Wiring methods should be in
accordance with the NEC (National Electrical Code). Bypass diodes and cable clamps are included with each

module when shipped from the factory.
●Correct wiring scheme
When designing the system, avoid forming loops to minimize risk in the event of an indirect lighting strike.
Check that wiring is correct before starting the generator. If the measured open circuit voltage ( Voc) and
short-circuit current (Isc) differ from the specifications, then there is a wiring fault.
●Correct connection of contact plug connectors
The plug connector has its own polarity. Make sure that the connection is safe and tight. The plug connector
should not receive outer stress. Otherwise, it is only used to connect the circuit!
●Use of suitable material
Use cable extensions and plugs that are designed for outdoor application. Ensure that they are in perfect
electrical and mechanical condition. Use only cables having one conductor. Select the appropriate cable
diameter to minimize voltage drop (to calculate the minimum cable diameter and the fuse, and to calculate
controls, multiply the Isc and Voc by a factor of 1.56).
If the module is connected to the control box, you must choose the control box with PVGZX0601-1 type
Connectors.
10、Bypass diodes
The type, voltage rating, current rating of the diodes are respectively 12SQ045 ,45V, 12A.
Partial shading of an individual module can cause a reverse voltage across the shaded module. Current is then
forced through the shaded area by the other modules.
When a bypass diode is wired in parallel with the series string, the forced current will flow through the diode
and bypass the shaded module, thereby minimize module heating and array current losses. Diodes are used as
bypass diodes:
Have a Rated Average Forward Current 20A Above maximum system current at highest module operating
temperature.
Have a Rated Repetitive Peak Reverse Voltage 50V Above maximum system voltage at lowest module
operating temperature.
There are six bypass diodes per module, and 20 cells per bypass diode
11、Battery
When solar modules are used to charge batteries, the battery must be installed in a manner which will insure t the
performance of the system and the safety of the users. The battery should be away from the main flow of people
and animal traffic. Select a battery site that is protected from sunlight, rain, snow, debris, and is well ventilated.
Most batteries generate hydrogen gas when charging, which is explosive. Do not light matches or spark near the
battery bank. When a battery is installed outdoors, it should be placed in an insulated and ventilated battery case
specifically designed for the purpose.
12、Maintenance and cleaning
●Do not change the PV components optionally (diode, junction box, plug connectors )
●Given a sufficient tilt (at least 15°), it is not generally necessary to clean the modules (rainfall will have a
self-cleaning effect). In case of heavy soiling (which will result in output reductions), we recommend cleaning the

modules using plenty of water (from a hose) without cleaning agents and using a gentle cleaning implement (a
sponge). Dirt must never be scraped or rubbed away when dry, as this will cause micro-scratch. We recommend that
the system be inspected at regular intervals.
13、Checklists:
●All fastenings are tight and secure and free of corrosion.
●All cable connections are secure, tight, clean and free of corrosion.
●Cables are not damaged in any way.
●Check the earthing resistive of metals.

14、Danger of death from electric shock!
Solar modules generate electricity as soon as they are exposed to light. One module on its own is below the safety
extra low volt level, but multiple modules connected in series (summing the voltage) or in parallel (summing the
current) represent a danger. The following points must be observed when handling the solar modules to avoid the
risk of fire, sparking and fatal electric shock.
●Do not insert electrically conducting parts into the plugs or sockets!
●Do not fit solar modules and wiring with wet plugs and sockets!
●Exercise utmost caution when carrying out work on wiring and safety equipment (use insulated tools,
insulated gloves, etc.)!
●Do not use damaged modules! Do not dismantle modules! Do not mark on the rear of the module using
sharp objects!
●Exercise utmost caution when working on wiring and the inverter. Be sure carefully to follow manufacture’s
installation instructions!
●Artificially concentrated sunlight shall not be directed on the modules or panels!
15、Danger of death from arcing！
Modules generate direct current when light shines on them. An arc may be produced when connections are
separated. We therefore recommend covering modules with a lightproof cloth during installation. When breaking a
connected string of modules (e.g. when disconnecting the DC line from the inverter under load), a lethally strong arc
can occur:
●Never disconnect the solar generator from the inverter while the inverter is connected to the mains
grid—remove the fuse from the AC side on the inverter first!
●Ensure cable connections in perfect condition (no splitting, soiling or other contamination)!
Remark: all sizes are measured in mm; and tolerance +/- 2 mm