1 - GLOBAL INSTALLATION

In an L.V. electrical installation, capacitor banks can be installed at 3 different levels:

Advantages:

• No reactive energy bill.

• Represents the most economical solution since all the power is concentrated at one point and the expansion coefficient makes it possible to optimise banks.

• Relieves the transformer.

Remark:

• The losses in the cables (RI²) are not reduced.

2 - SECTOR INSTALLATION

Advantages:

• No reactive energy bill.

• Relieves most of the line feeders and reduces Joule's heat losses (RI²) in these feeders.

• Incorporates the expansion of each sector.

• Relieves the transformer.

• Remains economical.

Remark:

• Solution generally used for a very large plant network.

3 - INDIVIDUAL INSTALLATION

Advantages:

• No reactive energy bill.

• From a technical point of view, the ideal solution since the reactive energy is produced in the same place as where it is consumed; therefore, the Joule's heat losses (RI²) are reduced in all the lines.

• Relieves the transformer.

Remark:

• Most costly solution given:
  . The high number of installations,
  . The non-incorporation of the expansion coefficient.