MIL-STD-1399-3008
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. This standard is intended to be used in designing surface ship and submarine AC electrical power systems and in designing and testing user equipment.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of the standard.
b. Report of results derived from tests listed in 5.3.
(1) Create test procedures by tailoring DI-EMCS-80201 so requirements 1 through 2.2; 2.4.a; 2.6.a, b, e, and f; and 2.7.b, c, and e are used, substituting "interface" for "EMI" and MIL-STD-1399-300 as the applicable military standard.
(2) Create a test report by tailoring DI-EMCS-80200 so requirements 1 through 2.2.a, b, f, g, i, m, o and
2.3 are used, substituting "interface" for "EMI" and MIL-STD-1399-300 as the applicable military standard.
c. Requirements for deviation requests (see 4.4 and 6.5).
6.3 Subject term (key word) listing. Delta- and wye-connected systems Frequency decay
Leakage current Power factor Transient limits
Worst case frequency excursion
6.4 International standardization agreement implementation. This standard implements STANAG 1008 Edition Number 8. 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 https://assist.daps.dla.mil.
6.5 Deviation requests. Requests for deviation are to be submitted for approval to the Naval Sea Systems
Command (NAVSEA 05Z3).
6.6 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.
6.7 Automatic ground detection (AGD) legacy record. The present AGD voltage limits incorporated in Revision 8 have been reduced to eliminate the constant voltage stress on insulation systems throughout the electrical distribution systems and on line-to-ground components caused by the additive effect of the AGD and system voltages. AGD systems currently in the operating submarine fleet include 500 VDC on 440 Vrms and 150 VDC on
115 Vrms systems. (Concerning the 115 Vrms electric power system, only the aft 115 Vrms bus is exposed to the AGD system.) User equipment must tolerate the combined AC and DC voltage stress to ground without equipment damage, arc-over, or degradation.
a. For user equipment on the full-wave rectified, unfiltered, unregulated AGD systems aboard SSGN 726
Class, SSN 688 Class and SSN 21 Class ships, the user equipment should be tested for 3 minutes at the following voltages:
550 VDC on 440 Vrms AGD systems: 440 Vrms x 1.414 x 1.200 + 550 VDC x 1.571 x 1.200 = 1784 V
150 VDC on 115 Vrms AGD systems: 115 Vrms x 1.414 x 1.200 + 150 VDC x 1.571 x 1.200 = 478 V
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