Excerpt - page 36: "... cells cause oxygen and hydrogen to react to form electrical power (cf. Fig. 4.8) for Spacelab as well as for the Shuttle systems. During nominal operation, two fuel ... and 200 V. Electrical powerdistribution for the various experiments (pallet or rackmounted) is effected by computer-based power regulation systems. The Experiment Power ..."
See more references to Power Distribution Systems, Rack Mounted in this book.