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UMG 511
Checking the power measurement
Short-circuit all current converter outputs ex-
cept one and check the displayed power out-
puts.
The UMG511 may only display one power out-
put in the phase with the current converter input
that is not short-circuited. If this does not apply,
please check the connection of the measure-
ment voltage and measurement current.
If the amount of effective power is correct but
the sign of effective power is negative, this may
have two causes:
• Connections S1(k) and S2(l) are mixed up on
the current converter.
• Effective power is returned to the network.
In the pointer diagram, voltages are shown
with the longer pointers and currents with
shorter pointers.
Checking communication
The UMG511 counts all received (RX), all sent (TX)
and all faulty data packages.
In the ideal case, the number of errors shown in
the error column is zero.
Reset:
You can delete the counters for the data packages
with key 6.
The start time for the recount is reset.
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