NOVAR 2600 Operating Manual
Tab. 4.8 : The Most Common Nominal Voltages
58 V
100 V
230 V
400 V
480 V
690 V
On successful completion of the total process, the controller saves recognized U1 angle and nominal
voltage U
NOM
into its memory. Then it returns into the state from which it was initiated. If it is the control
state the AOR process follows usually. Before this, we recommend to check stored values in
the
Installation
group of parameters and to correct them, optionally.
Otherwise, if the ACD process unsuccessful (the U1 angle not detected) or canceled prematurely no
parameters are updated and the process is automatically relaunched each approximately 15 minutes
again in the control mode.
If the first sections have very low powers the ACD process can fail especially while high load
at the network. Then start the process again (by resetting the U1 angle to ---) or, if necessary,
set it and the U
NOM
manually.
Sometimes it is necessary to start the ACD process at disconnected load (or at zero load )–
for example ,when testing a compensation switchboard before its expedition to a customer. If
the default controller undercurrent (
I<
) alarm actuation is set the controller gets into the
standby state in such case and the ACD process cannot be started. Therefore, it is
necessary to switch this alarm actuation temporarily off ( and to return it back after the ACD-
process passes).
4.4.5.3 Operation
Behaviour of the controller in the single-phase mode differs from the standard in :
•
I2 and I3 currents are not measured, their THDI and harmonic components are not evaluated
•
powers and power factor are evaluated only on basis of U1 voltage and I1 current :
measured single-phase power is multiplied by 3 and considered as three-phase power,
measured single-phase power factor is considered as three-phase power factor
•
single-phase powers and power factors are not evaluated
•
voltages are measured normally, i.e. all of three phases; their THDUs, CHLs and harmonics
are evaluated too, but the U2 and U3 values have no effect on the three-phase powers and
power factor. Voltage controlled alarms run normally for all of three phases (this is why we
recommend to connect all of three voltage phases even in the single-phase mode).
•
at
the 1D3
connection type, measured voltages are considered as line-to-line voltages; line-
to-neutral voltages are calculated from the line-to-line ones by dividing constant 1.73 (V3)
•
control strategy is fixed
3p
•
if
the U1 angle
is set as undefined, the ACD process is launched
•
the CT-test is irrelevant and cannot be launched
4.4.6 Special PFC-Block Related Quantities's Meaning &
Evaluation
General quantities' meaning and evaluation formulas can be found in the appropriate chapter of the
general meter part description further below.
In the PFC-block, basic measured values necessary for the power factor control are aggregated.
Furthermore, some additional special quantities are used. Description of the quantities follows.
54
Summary of Contents for NOVAR 2600
Page 82: ...NOVAR 2600 Operating Manual NOVAR 2600 T18 Typical Installation 82...
Page 83: ...NOVAR 2600 Operating Manual NOVAR 2600 T7 Typical Installation 83...
Page 87: ...NOVAR 2600 Operating Manual NOVAR 2600 T External Temperature Sensor Connection 87...
Page 88: ...NOVAR 2600 Operating Manual NOVAR 2600 4 RS485 Remote Communication Connection 88...
Page 89: ...NOVAR 2600 Operating Manual 8 Manufactured Models and Marking 89...
