MIL-STD-704F
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The intent of this document is to define the electric power quality requirements for DoD aircraft, however it may also be used with commercial aircraft or other types of vehicles. Other industry documents such as SAE-AS1212 and ISO 1540 also define aircraft electric power quality requirements. These documents are generally not appropriate for use with military aircraft because they do not address all of the areas of concern with military aircraft electric power quality and often require wider limits compared to this document due to the differences in the types and sizes of aircraft covered. In addition, they do not always take into account legacy DoD aircraft electrical power systems or legacy DoD utilization equipment. The power characteristics requirements of this document also apply to commercial and non- developmental utilization equipment purchased in accordance with the policy described in the
SD-2, "Buying Commercial & Nondevelopmental Items: A Handbook". If such equipment does not fully comply with the power characteristics requirement of this document, the effect of the equipment noncompliance on the electrical power quality and on the equipment capability to perform its intended function in the aircraft should be evaluated.
6.2 Considerations. Each element of the aircraft electrical power system is qualified and purchased to its own specification requirements document. The requirements of this document are less severe than the output power requirements of the typical electrical power source, taking into account the degradation of electrical power quality that can occur between a power source and the input electrical power terminals of utilization equipment. The effects of the electrical power distribution, control, and protection system, and the interactions between
electrical power sources and utilization equipment may cause the degradation of electrical power quality.
6.3 Supersession data. This edition of MIL-STD-704 supersedes all previous editions. Previous editions of MIL-STD-704, which are cited in contracts for legacy aircraft electrical systems remain in effect for procurement of utilization equipment. Therefore, copies of previous editions should be retained, as they are no longer stocked by the Government.
6.4 International standardization implementation. This standard implements STANAG
3456, "Aircraft Electrical System Characteristics". When changes to, revision, or cancellation of this standard are proposed, the preparing activity must coordinate the action with the U.S. National Point of Contact for the international standardization agreement, as identified in the ASSIST database at www.dodssp.daps.mil.
6.5 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes.
6.6 Application of this standard in utilization equipment specifications. Utilization equipment specifications should include a statement that "This equipment shall utilize electric power in accordance with MIL-STD-704 and shall be in accordance with the utilization
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