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In order to minimize module soiling, it is not recommended to set the tilt angle below 10 degrees.
Dirt tends to accumulate on modules installed at lower angles and does not wash off as readily
during rainfall.
Dirt accumulation, debris and even snowfall on the module will reduce its
energy output.
Select a location with the best possible solar radiation for the photovoltaic system you want to
install. Your choice of location should take into account the seasonal changes in light conditions.
Modules should be located in areas with an unobstructed view of the sun where they will receive
maximum exposure of sunlight for the longest possible time during the day. Shadowing caused
by buildings, roof pipes and vents, trees, utility poles and other obstructions may significantly
reduce the module energy output.
In systems that are configured with multiple rows of modules, the rows must be spaced far
enough apart to minimize the impact of shading on other rows. This distance is dependent on
the latitude and tilt angle at which the system is installed. The closer to the equator, requires a
lower tilt angle and therefore the shorter this distance. The further from the equator, higher tilt
angle and therefore the greater this distance needs to be. If there are questions regarding the
optimum configuration in which to arrange, mount or wire the modules, obtain assistance from
your Bosch Solar Energy dealer or distributor or retain the services of an engineer familiar
with the proper design of PV systems.
5. BOSCH SOLAR ENERGY MODULE CHARACTERISTICS
A. Electrical Characteristics
The following electrical characteristics were measured under Standard Test Condition (STC):
Electrical Characteristic
Model Designator (Part No. Suffix)
Maximum Power (Pmax)
Open Circuit Voltage (Voc)
Short Circuit Voltage (Isc)
Maximum Power Voltage (Vmpp)
Maximum Power Current (Impp)
Maximum System Voltage
Maximum reverse current protection
Please note the following: the electrical characteristics are within ±10 percent of the indicated values
of Isc, Voc, and Pmax under Standard Test Conditions (i.e. irradiance of 1000W / m
spectrum, and a cell temperature of 25°C (77°F)).
B. Thermal Characteristics
Thermal Characteristic
Model Designator (Part No. Suffix)
Operating Temperature Range
Temp. Coefficient of Maximum Power
Temp. Coefficient of Open Circuit Voltage
Temp. Coefficient of Short Circuit Voltage
Copyright Bosch Solar Energy Corp., version 1.0
Measure
c-Si M60 NA 30119
--
240Wp
Watts
240
Volts
37.07
Amps
8.51
Volts
30.16
Amps
7.98
Volts
Amps
Measure
--
240Wp
°C
% / °C
% / °C
% / °C
245Wp
250Wp
255Wp
245
250
255
37.27
37.47
37.67
8.61
8.71
8.81
30.36
30.56
30.79
8.08
8.18
8.28
600
17
2
, AM 1.5
c-Si M60 NA 30119
245Wp
250Wp
-40 to 85
-0.429
-0.321
+0.067
255Wp
Page 8 of 19
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