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- 3) E-Temp infrared temperature sensor
The E-Temp connects via radio frequency to the
E-1000 automatically at the time of measuring
temperatures. Therefore, no prior configuration is
required. Ensure that the E-Temp and E-1000 are
close enough to ensure the wireless connection.
For more information on how to measure with the
E-Temp see
section 5.3.6.
4.6 Connecting the module or generator
under test
Before connecting the circuit under test, be it a
single photovoltaic module or a generator with
several modules in series and parallel, the user must
disconnect this circuit from any other element to
which it was connected, for example the inverter,
charge regulator, battery, or other circuits in series
or parallel with the sample under test. Once the
circuit is completely isolated from other elements, it
can be connected to the E-1000.
Use the supplied set of cables to connect the circuit
under test to the E-1000. This set made up of two
pairs of measurement cables, one red and one black,
allows a four-prong measurement assembly. This
assembly is used in high precision measurements
since it avoids the voltage drop produced in the
wiring during the measurement. This ensures that
the actual I-V curve at the PV module output is
measured without distortions.
First, connect the four banana cables (two red and
two black) to the E-1000. Connect the red banana
cables to the red inputs of the E-1000 and the black
banana cables to the black inputs. Red represents
the positive pole of the circuit under test and black
the negative pole
(Figure 4.3a and 4.3b)
.
Once the cables are connected to the E-1000,
connect the other side of the wiring to the circuit
under test. The supplied cables have MC4 endings
for direct connection to photovoltaic modules.
The cables supplied with the E-1000 have been
manufactured to have the opposite terminals
than the modules to allow their direct connection.
Therefore, the positive pole (red cable) has a female
MC4 terminal and the negative pole (black cable)
has a male MC4 terminal. Avoid using third-party or
self-made cables to minimize risks and to prevent
possible polarity problems.
For the connection of the E-1000 to other elements,
such modules in parallel, Entec can supply a special
cable with four crocodile terminals instead of an
MC4 terminal.
Figure 4.3.a. Correct connection to E-1000.
Figure 4.3.b. Incorrect connection to E-1000.