Siemens SENTRON ATC6500 - Product description

Applications
3.3 Voltage measurement
3KC ATC6500 transfer control device
Manual, 05/2019, L1V30538268002A-01
31
The table below lists the measurements of the two sources. Some thresholds can also be
deactivated for triggering the transfer.
Measurement
Description
Can be deactivated
Minimum voltage
One or more phases too low
No
Maximum voltage One or more phases too high Yes
Voltage deviation of the two sources The tolerated delta between the voltage
of Source 1 and Source 2 for IN-
PHASE Transition
Yes, if P08.14 is disabled
Phase failure Threshold value at which the device
responds faster than when falling below
the minimum voltage
Yes
Voltage unbalance Voltage phases are not symmetrical to
one another
Yes
Minimum frequency
Frequency too low
Yes
Maximum frequency
Frequency too high
Yes
Frequency deviation of the two sources The tolerated delta between the fre-
quency of Source 1 and Source 2 for
IN-PHASE Transition
Yes, if P08.14 is disabled
Phase sequence Checking the rotational direction of the
phases
Yes
Deviation of the cos phi of both sources The tolerated delta between the cos phi
of Source 1 and Source 2 for IN-
PHASE Transition
Yes, if P08.14 is disabled