Circutor OPTIM-EMS-C Series Bedienungsanleitung PDF herunterladen (Seite 22)

5.2.6. CLEANING THE CABINET

 Remove any solid particles.

 Clean the inside of the cabinet.

 Clean ventilation grilles.

5.3.- MAINTENANCE WITH THE CAPACITOR BANK CONNECTED

 Check that the main switch turns on and off without having to force the mechanism.

 If there is an individual earth leakage protection for the capacitor bank, check its proper

operation by pressing the test button.

 Force the connection and disconnection of the capacitors in manual mode. (see the regula-

tor manual or quick guide before carrying out this operation) and perform the following checks:

▪ Check that the steps connect and disconnect properly.

▪ Check that there is no consumption in any phase with the step disconnected. If there is

consumption this means that some of the thyristors are defective and are short-circuited.

▪ Check the consumption of the different steps in each phase. The normal values are

shown in Table 5, in accordance with the power of each step.

Table 5:Nominal consumption of the capacitor paths, by power.

Power at 3 x 400 V In

2.5 kvar 3.6 A

5 kvar 7.2 A

7.5 kvar 10.8A

10 kvar 14.4 A

12.5 kvar 18 A

15 kvar 21.6 A

20 kvar 28.8 A

25 kvar 36 A

Note: When the consumption of the steps is 25% less than that stated in Table 5 and the volt-

age is within the tolerance limits, this is usually a sign of degradation of the capacitors. They

must be replaced with a suitable spare part if this is detected in a step.

Note: When the consumption of the steps is 10% more than the values stated in Table 5, this

may be caused by the presence of resonances. If this is detected, measure the THD of the

mains voltage (it should be below 5%).

OPTIM EMS-C series

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