S
E
TTING
Manual Datalogger SenNet DL150 / DL151 / DL170 / DL171 / DL172
52
Satel Spain
Versión 1.01
▪
B, Check current sensor orientation.
Checking the polarity (this step must be carried out for each
of the meters that will be used).
For each phase the system will display a message about what
you are
measuring.
CONSUMPTION
(if consumption is being metered),
GENERATION
(if the CT
are metering energy generated) or
NO LOAD.
In general terms, if there is no energy production
at the facilities (no solar panels, wind turbines ...) the result for all phases should be
consumption. If it were not, you have to
check the polarity of the connection of the probe or
the orientation of the cable.
Figure 27. Message shown at step B. In this case, there are two phases that measure generation and
one phase that measures consumption (Phase 3). This is a signal that the meter is not properly
connected.
▪
C, check type of load
:
Check the type of load (inductive, capacitive or resistive). It should be done
for each electricity meter.
The datalogger will show whether the type of load that is metering (
INDUCTIVE
,
CAPACITIVE
,
RESISTIVE
or
NO LOAD
). To interpret the results of this step one must have electrical
knowledge and must know the project in order to identify whether the result is as expected. If
it not, the error will be that one for the CTs (or Rogowski coils) has been connected to a
different phase and not to the correspondent one. For instance, it may be that the CT 1 has
been connected to
the phase S or T (instead of R) or it may be that the probe 2 has been
connected to R or T (instead of S).
Upon completion of the installation of the datalogger or after changing it to
another installation, you must press the button: Reset accumulated energy
counters and reboot
NO LOAD detection
The dataloggers SenNet DL151, DL171 and DL172 incorporate
the function
no load detection, so
that whenever the load measured is less than 5 per thousand of the nominal value of the load, it is
assumed that there is no load (0 intensity and 0 power). Thus the possibility of false measures or small
load values produced by noise is eliminated.
The following additional criteria are applied:
▪
If the resulting value of 5 per thousand is less than 300mA, then 300mA is used as the smallest
threshold
Summary of Contents for SENNET DL150
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