15
251/02 en
intVC13a
4
The voltage regulator TAPCON® 230 VC permits the
preselection of three different desired voltage levels, each of
which will be activated specifically in relation to the
actuation of inputs 33/34.
No signal present at terminals 33 and 34 => Desired voltage
level 1 is active
Presence of a signal at terminal 34 =>
Desired voltage
level 2 is active
Presence of a signal at terminal 33 =>
Desired voltage
level 3 is active
Setting the desired voltage levels 2 and 3 is identical to the
setting procedure for the desired voltage level 1, i.e. by
operating the function keys SET and
.
4.10
Line compensation
The line compensation, i.e. the inclusion of the voltage drop
of a line connected to the transformer in the regulating
process, can be accomplished in two different ways.
Comparison between LDC and Z Compensation
Application of the vectorial compensation (LDC):
-
requires knowledge of the exact line data
-
permits a more accurate determination of the line voltage
drops
Application of the Z compensation:
-
can be used in the case of minor shifts of the phase
angle
j
-
can be also used in meshed network applications.
4.9
Setting the desired voltage levels DVL2 and DVL3
4.10.1
Line Drop Compensation (LDC)
Setting the resistive voltage drop Ur
The calculated resistive voltage drop is set in the LDC UR
display by pressing the function keys SET and
.
The effect of the compensation can be reversed by 180°
(minus sign preceding the setting). If no compensation is
desired, then the value „0“ is to be set (condition at the time
of delivery).
NOTE
For the correct setting of the LDC it is necessary to calcu-
late the resistive and inductive line voltage drop in relation
to the secondary side of the voltage transformer in V and
the correct setting of the existing measuring transformer
configuration according to paragraph 4.8
Setting the inductive voltage drop Ux
The calculated inductive voltage drop is set in the LDC Ux
display by pressing the function keys SET
and
.
The effect of the compensation can be reversed by 180°
(minus sign preceding the setting). If no compensation is
desired, then the value „0“ is to be set (condition at the time
of delivery).
DES.VOLT.LEVEL DVL2
100V
(85V- 140.0V)
13/30
DES.VOLT.LEVEL DV3
100.0V
(85.0V- 140.0V)
14/30
LDC UR
0.0V
(-25.0V - 25.0V)
15/30
LDC UX
0.0V
(-25.0V - 25.0V)
16/30
4 Parametering