Document ID:	MIL-STD-1399       Scroll down to access document images
Spec/Std Sheet:	300
Sub/Part:	3

Overview

Title:  Department of Defense Interface Standard Section 300, Part 3 Low Voltage Electric Power Direct Current Scope:  This military standard section establishes electrical interface characteristics for shipboard equipment utilizing or providing low voltage direct current (LVDC) electric power at 850 (nominal) volts for type I and type III power and 875 (nominal) volts for type II power (see 4.2 and 6.2) to ensure compatibility between electrical power sources and user equipment. Characteristics of the electrical interfaces as well as interface requirements and interface verification methods for electrical power sources and user equipment are provided. For equipment with multiple electrical power interfaces, this standard only applies to those interfaces utilizing the applicable voltages generated by the shipboard electrical distribution systems. Status:  Active Document Date:  09-APR-2026       FSC/Area:  1905 Doc Category:   Military Standard -Interface Standard

Responsibilities

Lead Standardization Activity:  SH  Naval Sea Systems Command (Ship Systems)     Preparing Activity: SH  Naval Sea Systems Command (Ship Systems) Coordination:  Full   Army Custodian:  AV   Combat Capabilities Development Command, Aviation and Missile Center   Navy Custodian:  SH   Naval Sea Systems Command (Ship Systems)

Projects

Project Number:     1905-2021-002

Changes to military standards or handbooks issued after August 1, 2003 are incorporated in the modified document.

Revision History

Click on column headings for a description of column content.

NOTE: It is recommended that you use Adobe Reader v7.0 or higher for optimal download performance; older versions should continue to work, but downloading large files may appear to take longer, so please be patient in those cases.