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Verfügbare Sprachen
Verfügbare Sprachen
Following shows the list of bank setting parameters.
V nominal: nominal bank voltage.
When a V nominal value is entered, under-voltage and overvoltage protection levels are automatically set at 80% and
120% of V nominal.
These level values can be changed manually.
V scaling: external voltage transformer ratio.
Examples:
for a 15kV/100V voltage transformer, V scaling = 150.
if no external voltage transformer is used, V scaling = 1.
This function enables the RVT to control a MV capacitor bank. A proper voltage transformer shall be connected to the
measurements terminals of RVT. Then the RVT will display the MV measurement values accordingly.
Q step 1ph: the smallest step size for single phase (phase to neutral) capacitors which are used for individual phase
power factor correction in an unbalanced network.
Q step 3ph: the smallest step size for three phase capacitors in a balanced network.
For the above two settings,
a) After automatic commissioning, this value will be set according to the smallest step in the capacitor bank.
b) For guided commissioning (see 4.3.2.2), this value need to be set manually.
Here is an example in a capacitor bank which has both individual phase (3 steps) and three-phase (3 steps) power
factor correction:
Single phase sequence*: 1 (5kvar) 2 (10kvar) 2 (10kvar) Q step 1ph = 5 kvar
Three phase sequence: 1 (10kvar) 2 (20kvar) 2 (20kvar) Q step 3ph = 10 kvar
Or,
Three phase sequence: 2 (15kvar) 4 (30kvar) 5 (37.5kvar) Q step = 7.5 kvar
*Sequence: relative reactive power value of the capacitors connected to the RVT outputs. These relative values are
included between 0 and 8.
For both Base Model RVT6/RVT12 and Three Phase Model RVT12-3P, the default factory sequence is: 1:1:....:1.
Customized sequence may be introduced manually.
To customize a sequence, navigate in the menu tree as following:
Start screen Settings Manual settings Bank settings Outputs.
STATUS
Approved
Figure 27 Bank setting
SECURITY LEVEL
Public
PO WER FACTO R CON TR O LL ER RV T
Outputs
selection and
settings
Delays settings
Power factor
control settings
DOCUMENT ID
9AKK107045A9645
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