ABB’s next generation of medium voltage UPS is intended for multi megawatt power protection. Based on the revolutionary ZISC architecture, the PCS120 MV UPS introduces a flexible solution for higher reliability and higher efficiency in critical power facilities.
Why medium voltage?
The transition from low voltage (LV) to medium voltage (MV) level is a natural progression of power protection for large critical power facilities. The approach offers two main benefits. It increases reliability and reduces costs of the critical power facility build and operation.
Increased reliability is derived from the MV design approach with larger protected load blocks, lower switchgear count and the operating culture of medium voltage systems.
Installing the power protection at the MV level provides the most energy efficient configuration as the lower currents at this voltage result in smaller cables and lower losses.
A PCS120 MV UPS can be installed into the electrical supply to protect the complete supply to the data center or alternatively just server or mechanical loads. Installing the UPS protection at medium voltage provides the most energy efficient configuration and allows the possibility of installation outside the main data center building
What is ZISC?
ABB’s Impedance (Z) Isolated Static Converter ZISC is a revolutionary 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, such as harmonics and 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.