The space and electrical power needed to run a large critical power facility has increased over the past decade. Facilities are now faced with the need for energy efficient and reliable power as it is essential to have clean continuous power to avoid any major losses.

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.

Impedance (Z) Isolated Static Converter ZISC

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