Fire Pump Automatic Transfer Switch

Although both sources can be a utility when option u or modifications 26 27.

Fire pump automatic transfer switch.

New fire pump controller with automatic transfer switch ats within the same cabinet is also being planned. These transfer switches are an integral part of the fire pump. Metron mts automatic transfer switch provides operation of electric fire pump motors from a alternate source of power when the normal source fails. A generator used to supply a fire pump need not be dedicated to the fire pump but the direct connection requirement you refer to section 695 4 b in the 1996 nec would require a separate transfer switch for the fire pump usually as part of a listed combination fire pump controller and transfer switch.

Typically one is a utility source connected to the normal side of the transfer switch controller and the other is a standby emergency generator connected to the emergency side. For fire pump service both an automatic transfer switch and a bypass isolation transfer switch are available from cummins power generation. Fire pump controller mpt300ts pilot series across the line with automatic transfer switch. The fire pump control accessory includes all features necessary for a lake shore molded case dual motor automatic transfer switch ats to meet or exceed nfpa 20 chapter 10 u l.

1008 and nema ics 227 47 requirements for an ats to be used in a fire pump circuit. Transfer switch fire pump controllers route two sources of power to the fire pump motor. Listed combination fire pump controller and power transfer switch. They may be used with any metron electric fire pump controller across the line primary resistance part winding wye delta auto transformer or solid state reduced voltage types.

This sizing recommendation covers sizing the generator set for either arrangement and sizing the transfer switch for the second arrangement where separate from the fire pump controller. Due to site conditions the new fire pump controller with ats cannot be installed in the same fire pump room even when the existing fire pump controller is removed.