WATTrouter Mx - user manual
How to fit and setup the device
Page 24 from 82
have a defect in household wiring.
In any case, make sure to inspect the entire electric
wiring.
c.
You can verify the correctness of measurement input configuration by using the chart "
Input
checking oscilloscope
". This chart shows measured current waveforms in selected phase,
values are given in units of the built-in A/D-converter (digits), these are not normalized to
amps due to performance. This feature should only aid the fitter when configuring the
measuring inputs.
Always verify with a
resistive (heat) load only
, so that the phase shift
between voltage and current is zero (
)! Moreover, in order to verify the
measuring inputs the amplitude of current half-wave should always be greater than 1000
digits
(to be sure about the correctness of the settings)
.
Note
: During normal operation there may be shown even "exotic" waveforms. Be sure this is
the real current flowing through the phase wire, a superposition of currents flowing through
the connected appliances which are not always sinusoidal or their power factor varies from
one.
Figure15: Input is fitted correctly - sine wave of the current flowing through a resistive (heat) load is in phase with the voltage.
WATTconfig shows negative values on selected phase (consumption). Left image appears when there is normal (default) current flow
direction, right image appears for opposite direction. Note: The PV-inverter throughput appears exactly as the opposite, because the
current is anti-phased with the voltage. If the inverter performs power factor compensation you can observe corresponding phase
shifts.
Figure 16: Input is fitted incorrectly - sine wave of the current flowing through a resistive (heat) load is not in phase with the voltage and
either precedes (image left) or lags behind (image right) the voltage by 1/3 of mains half-wave. Measuring inputs are fitted incorrectly
and you need to select correct option in the Phase field for respective input.
8.
After a successful setup of measuring inputs you may begin to test outputs. This can be done on the
"Output settings" tab. Each connected load must be tested separately. Turn on circuit breaker or
activate fuse switch for the first output, and press the TEST button for the corresponding output. The
load should switch on. When the load is switched on, the active power drawn by connected load must
be detected by the current sensing module on the relevant phase.
