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2003 APRIL
City of Pleasanton
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2003 APRIL
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1/20/2009 2:04:58 PM
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CITY CLERK
CITY CLERK - TYPE
CODE SUPPLEMENTS
DOCUMENT DATE
2/20/2002
DOCUMENT NO
2003 APRIL
DOCUMENT NAME
SUPPLEMENT NO 12
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20.20.028 <br />WARNING <br />FUEL CELL POWER SYSTEM <br />CONTAINS ELECTRICAL <br />ENERGY STORAGE DEVICES. <br />VII. Connection to Other Circuits <br />692.59 Transfer Switch. <br />A transfer switch shall be required in <br />non-grid-interactive systems that use <br />utility grid backup. The transfer <br />switch shall maintain isolation be- <br />tween the electrical production and <br />distribution network and the fuel cell <br />system. The transfer switch shall be <br />permitted to be located externally or <br />internally to the fuel cell system unit. <br />When the utility service conductors <br />of the structure are connected to the <br />transfer switch, the switch shall <br />comply with Article 230, Part V. <br />692.60 Identified Interactive Equip- <br />ment. <br />Only fuel cell systems listed and <br />identified as interactive shall be per- <br />mitted in interactive systems. <br />692.61 Output Characteristics. <br />The output of a fuel cell system <br />operating in parallel with an electric <br />supply system shall be compatible <br />with the voltage, wave shape, and <br />frequency of the system to which it <br />is connected. <br />FPN: The term compatible does not <br />necessarily mean matching the pri- <br />mary source wave shape. <br />692.62 Loss of Interactive System <br />Power. <br />The fuel cell system shall be pro- <br />vided with a means of detecting <br />when the electrical production and <br />distribution network has become de- <br />energized and shall not feed the <br />electrical production and distribution <br />network side of the point of common <br />coupling during this condition. The <br />fuel cell system shall remain in that <br />state until the electrical production <br />and distribution network voltage has <br />been restored. <br />A normally interactive fuel cell sys- <br />tem shall be permitted to operate as a <br />stand-alone system to supply loads <br />that have been disconnected from <br />electrical production and distribution <br />network sources. <br />692.64 Unbalanced Interconnections. <br />(A) Single Phase. Single-phase inter- <br />active fuel cell systems shall not be <br />connected to a 3-phase power system <br />unless the interactive system is de- <br />signed so that significant unbalanced <br />voltages cannot result. <br />(B) Three Phase. Three-phase inter- <br />active fuel cell systems shall have all <br />phases automatically de-energized <br />upon loss of voltage, or unbalance of <br />voltage in one or more phases, unless <br />the interactive system is designed so <br />that significant unbalanced voltages <br />will not result. <br />692.65 Point of Connection. <br />(Pleasanton April 2003) 710-36 <br />
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