HiPerGuard Medium Voltage UPS

Impedance (Z) Isolated Static Converter ZISC

ABB’s ZISC is a high performance, high efficiency power conditioning and uninterruptible power supply architecture. It provides protection from a broad spectrum of utility voltage events and supplies continuous clean power.

ZISC architecture is based on an isolating line reactor coupled with the high performance ABB power converters. This simple approach, backed up with advanced control, provides unmatched reliability and performance, with class leading efficiency.

Decoupled from the utility via the isolating line reactor, the power converters continuously condition and filter utility disturbances, voltage imbalance, without cycling the energy storage. Load related events, such as downstream faults and other dynamic reactive current demands, are managed with ZISCs high overload capability.

The isolating line reactor and the coupling transformer are applied at medium voltage, whereas the power converters and energy storage are at low voltage, thus simplifying maintenance.

Combined with a wide range of the modern energy storage ABB’s ZISC provides autonomies from few seconds to many minutes.