Fire Pump Transfer Switch Wiring Diagram


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Fire Pump Transfer Switch Wiring Diagram - listed fire pump power transfer switch listed bination fire pump controller and power transfer switch select or set the ocpd to carry indefinitely the sum of the locked rotor current of the fire pump and pressure maintenance pump motor s and 100 of the ere rating of the fire pump p div class b factrow b twofr div class b vlist2col ul li div author mike holt div li ul ul ul div div div li find all fire pump controller drawings as well as jockey pump controller remote alarm panel and low suction shutdown controller drawings here zenith mx150 transfer switch block diagram options and miscellaneous 20310 mc poc programmable option chassis variable speed jockey pump controller external wiring 24129 pmcv 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 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 although both sources can be a utility when option u or modifications 26 27 the transfer of power from normal to standby and vice versa needs to take place within sight of the fire pump nfpa 20 9 6 4 and nec 695 12 a which means the transfer switch needs to be located in the same room as the pump as with the first ex le it s best to specify a packaged unit automatic transfer switch controllers the ft series fire pump controllers are designed to provide automatic transfer from normal to alternate power when the normal source of power drops below 85 or is lost in.
any or all phases of the normal power supply designing electrical systems for fire pumps since fire pumps are considered life safety equipment they must be reliable when designing or installing electrical power supplies for fire pumps and their accessories you must apply special rules as listed in nfpa 70 the national electrical code nec and the standard for centrifugal fire pumps cfp nfpa 20 p div class b factrow b twofr div class b vlist2col ul li div author james stallcup sr div li ul ul ul div div div li these requirements include a need for a separate automatic transfer switch for each fire pump and a special certification of this transfer switch for fire pump service however many other requirements of the nfpa 20 have only recently been adopted by the cec part i mittee for inclusion into the 20th edition of the code p div class b factrow b twofr div class b vlist2col ul li div author.
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