scope:

This standard covers requirements for the arrangement of conductors and devices for disconnect switch boxes and contactor panels used in d.c. circuits that will reduce the stray magnetic field to a minimum.

The requirements of this standard are applicable to disconnect switch boxes, contactor panels, switchboards, power panels and motor controllers used in d.c. circuits aboard minesweepers and other special installations where stray magnetic fields must be reduced to a minimum. In particular, the requirements of this standard apply to disconnect switch boxes and contactor panels which may be connected in the magnetic minesweep cable run between the magnetic minesweep generator(s) and the minesweep cable terminal box. The requirements of this standard may also be applied to the design of other control equipment in d.c. power circuits.

This standard shall be used in conjunction with the requirements of all technical specifications and standards for a specific disconnect switch box or contactor panel. In the event that any requirement of this standard conflicts with the requirements of other technical specifications and standards for the box or panel, the conflict shall be brought to the attention of the Naval Sea Systems Command for resolution.