Goto Section: 80.919 | 80.923 | Table of Contents

FCC 80.921
Revised as of December 4, 2012
Goto Year:2011 | 2013
§  80.921   Proof of capacity.

   (a) When directed by a representative of the Commission the vessel must
   prove by demonstration as prescribed in paragraphs (b), (c), (d) and
   (e) of this section, that the requirements of §  80.919 are met.

   (b) Proof of the ability of a storage battery used as a main or reserve
   power supply to operate over the 3-hour period established by a
   discharge test over the prescribed period of time, when supplying power
   at the voltage required for an electrical loss as prescribed by
   paragraph (d) of this section.

   (c) When the required power supply consists of an engine-driven
   generator, proof of the adequacy of the engine fuel supply to operate
   the unit over the 3-hour period of time may be established by using as
   a basis the fuel consumption during a 1 hour period when supplying
   power, at the voltage required for operating an electrical load as
   prescribed by paragraph (d) of this section.

   (d) In determining the required electrical load the following formula
   must be used:

   (1) One-half of the current of the required transmitter at its rated
   output power; plus

   (2) Current of the required receiver; plus

   (3) Current of electric light, if required by §  80.925; plus

   (4) The sum of the current of all other loads the reserve power supply
   may provide in time of emergency.

   (e) At the conclusion of the test specified in paragraphs (b) and (c)
   of this section, no part of the main or reserve power supply must have
   an excessive temperature rise, nor must the specific gravity or voltage
   of any storage battery be below the 90 percent discharge point.

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Goto Section: 80.919 | 80.923

Goto Year: 2011 | 2013
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