Speed control relay 7VU68

panel-mountdigitalprogrammable

The SIPROTEC 7VU683 high speed busbar transfer (HBST) device is a compact multifunction unit for very fast power supply transfer of busbar which is installed with big rotating loads. It accommodates the primary diagram of both single busbar and segmented single busbar. The compact solution is designed to fit for the primary diagrams of single busbar (2 CBs) and segmented single busbar (3 CBs). It has incorporated the traditional HSBT philosophy. Additionally, the unique Real Time Fast Transfer mode helps to improve the efficiency. Features Permanent availability of electricity is essential for reliable production of a great number of processes in power stations and industrial plants where lots of inductive motor areinstalled. To achieve this, a busbar is normally equipped with two or more independent in-coming power sources to provide the possibility to switch to standby source in case of main source interruption or failure. The power supply interruption with tens of millisecond has small impact to rotating loads. Thus, the High Speed Busbar Transfer (HSBT) device helps to control and monitor the progress to ensure the fast but reliable switching-over. It can be initiated manually or automatically. Based on the existing world-wide used SIPROTEC 4 platform, the reliability, stability and efficiency of HSBT 7VU683 are guaranteed. Thanks to its powerful and flexible performance, multi functions are integrated into one system, e.g, power supply transfer, relay protection and supervision.