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The E-Sens does not require any configuration
beyond the synchronization of the time with the
E-1000, an adjustment that is carried out from the
E-1000.
(see section 5.5.11.A.)
.
IMPORTANT:
steps 2 and 3 of the previous
listing are essential to obtain consistent results of
the values extrapolated to STC.
4.5 Mounting and connecting the radiation
and temperature sensors to the E-Sens
The process for mounting and connecting the
irradiance and temperature sensors is detailed
below. The settings necessary for these sensors to
function properly are defined in
section 5.5.6.B.
4.5.1 Irradiance sensor
The irradiance sensor supplied with the device is a
calibrated silicon solar cell. This cell must be mounted
coplanar to the module or generator under test
(Figure
4.2).
Once fixed with the appropriate inclination, and as
close as possible to the modules under test, it will
be connected to the E-Sens through the banana
type connection for the I
SC
measurement in the 2 V
connector at the bottom of the E-Sens
(See Figure
2.4.).
In addition, the reference cell incorporates a
PT-1000 to correct the irradiance measurement
with temperature. This PT-1000 will be connected
to the RTD connections of the E-Sens, which will
automatically correct the current measurement.
The calibration parameters, provided in the calibration
certificate delivered with your device, must be included
in the settings as detailed in
section 5.5.6.A.
4.5.2 Temperature sensor
There are three types of sensors that can be used to
record temperature with the E-Sens:
- 1) PT-1000
PT-1000 can measure the module under test
(Tmod), the temperature of the reference cell
(Tsen) or the ambient temperature (Ta). When
measuring Tmod, the PT-1000 must be attached
to the back of the module, ideally according to
Figure 4.2.
The PT-1000 must be connected to
the E-Sens, which has three inputs on the top,
marked as ch1 ch2, and ch3 in
Figure 2.4.
, for
the temperature reading. The temperature of the
reference cell is measured through a PT-1000 as
previously detailed. For more information on how
to configure the PT-1000s with the E-Sens see
section 5.5.6.B.
- 2) Calibrated module
The calibrated module must be mounted in a
representative position of the module to be tested.
If the test is on multiple generators, then it should
be a central module so that its conditions are
representative of most of the modules in the plant.
The output of the module must be connected to
the 60 V channel of the E-Sens with the correct
polarity. To obtain a correct temperature value,
the reference module calibration values must be
configured in the E-1000
(see section 5.5.6.B.)
!
Figure 4.2. Reference module setup.