Applications
3.3 Voltage measurement
3KC ATC6500 transfer control device
Manual, 05/2019, L1V30538268002A-01
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3.3.1
P02 General
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The general system settings can be adjusted in Menu P02.
In the menu the system configuration (application) is set (see chapter Load management
with the ATC6500 (Page 20)).
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The nominal voltage and frequency are also set in P02. These are used as a reference
for setting the percentage thresholds.
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A voltage ratio (VT) can be set if voltage transformers are to be operated at the
measurement inputs of the device. This is the case when a voltage is applied which is
higher or lower than the set rated voltage. In this case the display and setting of
thresholds are also performed on the actual variables in relation to the system.
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The device can be adjusted for the voltage measurement of three-phase networks with or
without neutral conductor, two-phase or single-phase networks (P02.07).
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In the case of three- or two-phase power supplies you can choose whether you want to
monitor the phase-to-phase voltage, the phase-to-neutral voltage, or both (P02.08). In
each case, the nominal voltage set in P02.02 must be equal to the phase-to-phase
voltage.
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The phase sequence is checked via P02.06.
3.3.2
P06 Source Lines
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In this menu the source is defined as a network or generator (P06.n.03)
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The source priority can also be defined under parameter P06.n.02
3.3.3
P08 Switch
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This menu makes it possible to activate the IN-PHASE transition with synchronized
sources. The corresponding parameter P08.14 must be set to IN-PHASE for this
purpose. The tolerated deviations for voltage, frequency and phase displacement angle
cos phi are defined by the parameters P08.15, P08.16 and P08.17. The duration of the
process up to synchronization is specified by parameter P08.19. If the state of
synchronism is not attained during the time defined by parameter P08.19, the transfer
takes place without IN-PHASE transition.
