30
Connection not identified
Given if the connection has not been identified during initial
·
start-up.
Stages not identified
Given if the corrective power of the capacitor stages has not
·
been identified during initial start-up.
6.2 Safety precautions before start-up
After all installation work has been carried out as described in
[Section 5, Installation],
and the
above safety instructions have been complied with, the power supply may be switched on and
the PQC started up.
6.3 Functional checkout
Once the power has been switched on, it takes several seconds until the PQC starts up. The
backlighting of the LCD display is the first visible indication, then, after about five seconds, the
PQC is ready for operation. Information is displayed on the LCD screen, and the PQC can be
operated by means of the keys.
Figure 10 PQC Start screen (firmware version number may be different)
6.4 Configuration
The PQC is configured using the keys to navigate the menu
[see Table 3, Key functions]
.
6.5 Automatic commissioning
If
Detection
is selected in the Initial start-up menu, then
Stage + connection
and confirmed with
Continue
, the instrument carries out the capacitor stage and connection identification procedure
automatically.
6.5.1 Automatic connection identification
When the operating voltage is applied to the instrument for the first time, and
Continue
is
selected in the Initial
start-up
dialogue, it is possible that the PQC automatically carries out
the connection identification procedure, i.e. the instrument itself identifies in which phase angle
the current and voltage paths are connected. If the PQC does not succeed in this, for example
because the network is very unstable, the calibration procedure should be repeated under more
stable network conditions. It is also possible to enter the phase angle (connection type) manu-
ally,
[see Section 8.1, PQC initial start-up. Table 1 below shows the appropriate connections for
current transformers].
