MIL-PRF-26611F
(Copies of these documents are available online at https://assist.dla.mil/quicksearch/ or from the
Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA
19111-5094.)
2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a
conflict between the text of this document and the references cited herein (except for related
specification sheets), the text of this document takes precedence. Nothing in this document,
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
3. REQUIREMENTS
3.1 Qualification. Generators furnished under this specification shall be products that are
authorized by the qualifying activity for listing on the applicable qualified products list before
contract award (see 4.2 and 6.3).
3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible, provided
that the material meets or exceeds the operational and maintenance requirements, and promotes
economically advantageous life cycle cost.
3.3 Materials. Unless otherwise specified, materials shall be non-magnetic and nonferrous.
Materials shall not produce deleterious fumes and shall be treated to resist corrosion due to
electrolytic decomposition, fungus, fuels, salt spray, or any other conditions that may be
encountered during operation, use, or storage.
3.4 Interface.
3.4.1 Dimensions. The generator shall conform to the dimensions in Figures 1 and 2.
3.4.2 Electrical connector and mounting. The 2-pin connector for the generator shall conform to
MS33678-12S-3P. The threaded portion of the connector shall be located within 0.375 inch from
the rear of the generator. The mounting shall withstand a force of 17 foot-pounds bending
movement applied in any direction perpendicular to the longitudinal axis of the connector
without damage.
3.4.2.1 Connections. The generator winding leads shall be designated B, A, and C (conforming
to phases 1, 2, and 3). The B and A leads shall be connected to the B and A pins of the connector
and the C lead shall be grounded to the generator frame. Voltage phase rotation is B, A, and C
when rotating the generator drive shaft counterclockwise.
3.4.2.2 Connector shell. The shell shall be electrically grounded to the generator case. In
addition, the shell shall be permanently marked FOR USE WITH PERCENT RPM
INDICATORS ONLY. The letters shall be at least 0.093 inch high and clearly visible and easily
readable on opposite sides of the shell.
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