Control and protection equipment

All capacitor installations must be adequately protected and control to ensure correct operation within the equipment ratings. We provide protection equipment specifically designed for sensitive unbalance protection.

Capacitor units are commonly connected in a double star or H-configuration. Such installations require current unbalance protection relays that are sensitive to very minute changes in operating current. Smaller medium voltage capacitor banks may be connected in a single star arrangement, and for such applications we can provide sensitive voltage unbalance protection relays. These relays are available as dedicated unbalance protection relays and more comprehensive relays that can performance sensitive unbalance protection as well as extensive line side protection.

We offer a range of control equipment suitable for low and medium voltage capacitor bank control. These automatic six- and twelve step controllers offer you a clear graphical user interface, smart control and flexible communication options.

Find out more about control and protection equipment for capacitor banks.