The AQ-C255A capacitor bank protection device has been specifically designed for the protection of capacitor banks. It includes capacitor bank current unbalance, capacitor bank neutral unbalance, and overload protections in addition to the standard overcurrent, earth fault and voltage protections. AQ-C255A offers a modular protection and control solution for applications that require a large I/O capacity. You can add up to eleven (11) I/O or communication cards into the device for extensive monitoring and control applications. The AQ-C255A capacitor bank protection device communicates using various protocols, including the IEC 61850 substation communication standard.
Double busbar control.
A large I/O capacity.
Capacitor bank module with capacitor bank-specific protection functions.
Current- and voltage-based protections.
Cable-end differential protection.
Low-impedance restricted earth fault protection.
Harmonics protection and control.
Power and energy measurement accuracy of up to 0.2 %.
Up to 100 disturbance records.
Capacitor bank module (CBP)
Capacitor bank current unbalance (Iuc>; 46C)
Capacitor bank neutral unbalance protection (Cnu>; 50UB)
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