The products > Reactive energy compensation > High voltage capacitors and capacitor banks > High voltage capacitor banks > Additional accessories

Quick discharge reactors

Installing two quick discharge reactors or potential transformers between the phases of the bank makes it possible to reduce the capacitor discharge time from 10 minutes to approximately 10 seconds.
This reduction in the discharge time :

• provides safety for personnel during any interventions

• reduces the waiting period before ground (closing of MALT isolating switch)

• makes it possible to reactivate the banks in steps more quickly after a power cut, although a min. time of 5 minutes is essential between two discharges, in order to ensure correct cooling of the discharge reactors.

Damping reactors

Installing damping reactors in series on each phase of the bank makes it possible to reduce surge currents to acceptable values for the corresponding control device.
These are necessary in the following cases :

• step banks

• very high network short-circuit power in relation to the power of the bank to be connected

• frequent capacitor bank control operations

High voltage summary