Reactive Power Controller; Start-Up And Operation; Trouble Shooting During Installation - Icar MICROmatic Manuel D'installation

ICAR PQS
5

REACTIVE POWER CONTROLLER

The type of automatic controller mounted can vary according to the required specification. Hence as regards its
characteristics and calibration procedures, consult the specific instructions which are always attached to the unit.
6

START-UP AND OPERATION

After carrying out the operations described in the section "Connections to mains", the unit is ready to be switched on.
Before powering up the unit, check for correct tightening of all connections.
Periodically repeat such operation.
After closing the main disconnect switch Q1 (see Attachment C/D), preset the primary value on the current transformer
connected to the controller (for presetting of this parameter, see "Quick guide for putting the unit into operation").
To check for correct operation of the unit in manual mode, switch the controller to "MANUAL" function, then insert the
single steps checking that they draw the correct amount of current.
When the controller is turned to "AUTOMATIC" mode, the unit switches the various capacitor banks in and out
depending on the load demand; in this case, the number of banks switched in is signalled by the lighting up of the
STEP leds located on the reactive power controller.
If reactive power controllers RPC 5LSA, RPC 5LGA, RPC 8LGA, RPC 7LSA, RPC 8BSA, RPC 12BSA, RPA 8BMA,
RPA 12BMA, RPE 12BTA and RPC 8BGA are installed, the starting and stopping of the fan are controlled directly by
the controller (if the expansion module MCP5 is not installed).
These latest generation controllers are also able to check for any thermal overloading; hence they can switch out all
steps enabled thereby generating an alarm on the display.
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TROUBLE SHOOTING DURING INSTALLATION

Problems
The controller fails to
switch on
(all leds and/or display are
switch off)
The controller fails to
switch in the capacitor
banks
The controller displays an
unreal power factor
CAUTION!
Probable causes
Disconnect switch not on.
Blowing of control circuit fuses.
Quick connect terminal boards located
inside the unit have jumped out their
Controller faulty
Current transformer installed at
incorrect point of the system, only
upstream of the power factor correction
The current transformer is enabled on
the incorrect phase.
The controller is set in manual mode.
The amperage of the current
transformer is lower than the threshold
The current transformer is enabled on
the incorrect phase.
The current transformer is faulty.
Remedies
Turn the disconnect switch on.
Identify the cause blowing the fuses, then
replace them.
Correctly engage the quick connect terminal
boards on the controller.
seats.
Check the power supplies of the controller. If
they are regular, replace the controller with
one of the original type.
Correctly position the current transformer
upstream of all the loads and power factor
correction.
system.
Position the current transformer on the
phase L1 (R) referred to our cabinet.
Switch to automatic mode of operation.
Increase the load current, or else use a
current transformer with adequate primary
of sensitivity ratio.
Position the current transformer on the
phase L1 (R) referred to our cabinet.
Replace it with a suitable one.
MAT189 revJ jan18
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