CIRCUTOR LCL Series - Manual (Page 9)

------ LCL filters: Instructions Manual ----- Page 9
9
5 INSTALLATION AND START-UP.
5.1 Location.
The equipment must be located indoors, away from heat sources and adequately ventilated.
5.2 Initial checks (pre-installation, switch the power OFF).

A main switch must be provided upstream to cut the supply of the filter.

Check that the nominal voltage of the equipment, shown on the technical information label is the
same as the nominal voltage between phases for the system to which it will be connected.

Connect the protective conductor: the cabinet must be earthed through the earthing terminal.

Check and tighten terminals that may have come loose during delivery.
5.3 Connecting the power circuit. (see schematics in Fig 3)

Connect the power terminals (U1, V1, W1) to input cables coming from the mains side and (U2,
V2, W2) to the cables going to the converter side.

WARNING! If holes need to be drilled in the casing to feed cables through, take care to avoid
shavings falling onto the contactors.
5.4 Connecting the operating circuit (Only in case of overcompensation
protection)

The current transformer is installed at a point upstream of the filter. Usually in L1 incoming line.

Connect the CMM-96-MD and set the device to the desired limit of reactive current. (See CMM-
96-MD manual)
5.5 Start up.

Check again the control and power circuit connections.

Switch the main switch ON
6 Check points.
For optimum operation of the filter, the following points must be considered:

Voltage: The operating voltage must not exceed the nominal voltage; Operating in overload
conditions considerably reduces the life of the capacitors.

Current: The absorbed current for each capacitor, must not exceed 1.3 times its nominal current.

Whenever the current absorbed by the capacitors is higher than the nominal current may be due
to excess of harmonics or a voltage higher than the nominal voltage. Both situations are harmful
for the capacitors.
 In this event, the bank must be disconnected and CIRCUTOR’s technical department must be
contacted to ascertain the best way to solve the problem.