ABB Relion 670 Series Applications Manual page 402

Section 14
Control
values to the right of the setting. Reference is made to figure
reverse direction of power through the transformer.
P>
IEC06000634 V2 EN-US
Figure 188: Setting of a negative value for P>
P< : When the active power falls below the value given by this setting, the output PLTREV will be
activated after the time delay
effectively means that, for example a positive value of
in the forward direction. This is shown in figure
all values to the left of the setting. Reference is made to figure
reverse direction of power through the transformer.
IEC06000635 V2 EN-US
Figure 189: Setting of a positive value for P<
Q> : When the reactive power exceeds the value given by this setting, the output QGTFWD will be
activated after the time delay
effectively means that the function picks up for all values of reactive power greater than the set
value, similar to the functionality for
Q< : When the reactive power falls below the value given by this setting, the output QLTREV will be
activated after the time delay
effectively means that the function picks up for all values of reactive power less than the set value,
similar to the functionality for
tPower : Time delay for activation of the power monitoring output signals (PGTFWD, PLTREV,
QGTFWD and QLTREV).
Parallel control (ParCtrl)
OperationPAR : Setting of the method for parallel operation.
OperCCBlock : This setting enables/disables blocking if the circulating current exceeds
CircCurrLimit .
CircCurrLimit : Pick up value for the circulating current blocking function. The setting is made in
percent of
tCircCurr : Time delay for the circulating current blocking function.
396
P
en06000634_2_en.vsd
tPower . It shall be noticed that the setting is given with sign, which
P
P<
en06000635_2_en.vsd
tPower . It shall be noticed that the setting is given with sign, which
tPower . It shall be noticed that the setting is given with sign, which
P< .
I2Base .
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P< means an active power less than a value
189 where a positive value of
P> .
1MRK 511 401-UUS F
183 for definition of forward and
P< means pickup for
183 for definition of forward and
Bay control REC670
Application manual