scope:

This international standard provides the test methods for the electric/thermal and environmental performance of small stationary fuel cell power systems that meet the following cr iteria: Output: nominal electr ic power output of less than 10 kW; Output mode: grid-connected/independent operation or stand-alone operation with single-phase AC output or 3-phase AC output not exceeding 1000 V, or DC output not exceeding 1500V; NOTE The limit to 1000 V comes from the definition of "low voltage" in IEV (IEV number 601-01-26). Operating pressure: maximum allowable working pressure of less than 0,1 MPa (G) for the fuel and oxidant passages; Fuel: gaseous fuel (natural gas, liquef ied petroleum gas, propane, butane, hydrogen, etc.) or liquid fuel (kerosene, methanol, etc.); and, Oxidant: air. This standard covers fuel cell power systems whose pr imary purpose is the production of electr ic power and secondary purpose is the utilization of by-product heat. Accordingly, fuel cell power systems for which the use of hear t is pr imary and the use of by-product electr ic power is secondary are outside the scope of this standard. All systems with integrated batteries are covered by this standard. This includes systems where batteries are recharged internally or recharged from an external source. This standard does not cover additional auxiliary heat generators to produce thermal energy.