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Medium voltage (MV) power supplies are now one of the most common load bank test applications. Many facilities require MV supplies to power their equipment and matched MV load banks are specified to ensure back-up power supplies are kept in optimum condition.
There are three main types of medium voltage load banks:
Low voltage (LV) load bank with a step-down transformer on a common skid
A common configuration mounts a three-phase step-down transformer and one or more load banks on a structural skid, as shown in the image below. The transformer secondary voltage on these skid mounted units are usually rated at 480 or 600 volts. These higher secondary voltages result in lower current, and will require less interconnect cabling when compared to designs that use 208 volt or 240 volt secondary voltage.
There are three main types of medium voltage load banks:
Low voltage (LV) load bank with a step-down transformer on a common skid
A common configuration mounts a three-phase step-down transformer and one or more load banks on a structural skid, as shown in the image below. The transformer secondary voltage on these skid mounted units are usually rated at 480 or 600 volts. These higher secondary voltages result in lower current, and will require less interconnect cabling when compared to designs that use 208 volt or 240 volt secondary voltage.
