Auto Transfer Switch
ATS System for Step Load Application
A luxury development of modern apartments in a major UK city was recently installed with an emergency power system in case of mains power failure.
The system utilised 2 x load sharing generators, controlled by DSE8610s, which were installed into the basement of the apartment block. Each floor of the building was then connected to a DSE333 ATS Controller which controlled the load transfer to and from the generator supply.
Using this system, the load could be applied in steps as each floor was transferred. This would avoid a potential step load that may be too large and likely to be in excess of the load acceptance specification of the gensets, causing the system to fail. Equally, the stepped transfer of the load from the generators back to the mains ensures the system would continue to operate normally, starting its shutdown sequence on removal of the last step load.
The DSE333 supports many topologies and features include mains (utility) rated volt-free relays, a clear back-lit LCD 4-line text display, showing system status and warnings and red and green LEDs indicating operational status.
For further information please refer to the Data Sheet 055-080