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UMG 96RM-PN
Direction of the rotating field
Check the direction of the rotating field voltage in
the measured value display of the UMG 96RM.
A “right-hand” rotation field usually exists.
Checking the phase assignment
The phase conductor assignment to the current transformer
is correct if a current transformer is short-circuited on
the secondary side and the current displayed by the UMG
96RM-PN drops to 0A in the associated phase.
Checking the power measurement
Short-circuit all current transformer outputs except for
one and check the displayed power outputs.
The UMG 96RM-PN may only display one power output in
the phase with a non-short-circuited current transformer
input. If this is not the case, check the connection of
the measured voltage and the measuring-circuit current.
If the effective power amount is correct but the sign
of the power output is negative, this could have two
possible causes:
• S1(k) and S2(l) are reversed at the current transformer.
• Effective energy is being supplied back into
the network.
Applying the residual current
Connect residual current transformer only to the I5 and
I6 inputs with a rated current of 30mA! Both residual
current inputs can measure AC currents, pulsing direct
currents and DC currents.
Bearing in mind the current transformer ratio, the
residual current displayed by the UMG96RM-PN must
correspond with the input current.
The current transformer ratio is factory-set to 1/1A and
must be adapted to the residual current transformer
used if necessary.
C
It is not necessary to configure a
connection schematic for residual current
inputs I5 and I6.
C
The UMG96RM-PN requires the mains
frequency for residual current monitoring. For
this purpose, the measured voltage should be
applied or a fixed frequency should be set.
Summary of Contents for UMG 96 RM-PN
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