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ARTICLE 692 Fuel Cell Systems <br /> <br />I. General <br /> <br />692.1 Scope. <br /> <br />This article identifies the requirements for the installation <br />of fuel cell power systems, which may be <br />stand-alone or interactive with other electrical power pro- <br />duction sources and may be with or without electrical en- <br />ergy storage such as batteries. <br /> <br />692.2 Definitions. <br /> <br />Fuel Cell. An electrochemical system that consumes fuel to <br />produce an electrical current. The main chemical reaction <br />used in a fuel cell for producing electrical power is not <br />combustion. There may, however, be sources of <br />combustion used within the overall fuel cell system such as <br />reformers/fuel processors. <br /> <br />Fuel Cell System. The complete aggregate of equipment <br />used to convert chemical fuel into usable electricity. A fuel <br />cell system typically consists of a reformer, stack, power <br />inverter, and auxiliary equipment. <br /> <br />Interactive System. A fuel cell system that operates in <br />parallel with and may deliver power to an electrical produc- <br />tion and distribution network. For the purpose of this defi- <br />nition, an energy storage subsystem of a fuel cell system, <br />such as a battery, is not another electrical production <br />source. <br /> <br />Maximum System Voltage. The highest fuel cell inverter <br />output voltage between any ungrounded conductors present <br />at accessible output terminals. <br /> <br />Output Circuit. The conductors used to connect the fuel cell <br />system to its electrical point of delivery. In the case of sites <br />that have series- or parallel-connected multiple units, the <br />term output circuit also refers to the conductors used to <br />electrically interconnect the fuel cell system(s). <br /> <br />87 <br /> <br /> <br />