1、AMSC N/A AREA SESS INCH-POUND MIL-STD-2003-2A(SH) 3 September 2009 SUPERSEDING DOD-STD-2003-2(SH) 24 June 1987 DEPARTMENT OF DEFENSE STANDARD PRACTICE ELECTRIC PLANT INSTALLATION STANDARD METHODS FOR SURFACE SHIPS AND SUBMARINES (EQUIPMENT) Provided by IHSNot for ResaleNo reproduction or networking
2、permitted without license from IHS-,-,-MIL-STD-2003-2A(SH) ii FOREWORD 1. This standard is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 2. This standard disseminates up-to-date inform
3、ation detailing requirements for standard installation methods employed for submarine and surface ship electrical distribution systems. 3. These criteria apply to work on a specific ship or ships only when invoked by the Ship Specifications or similar contractual documents. 4. These criteria are for
4、 application to new construction, conversion, and alteration of existing ships. 5. Considering the magnitude of this standard, along with the changing requirements imposed on the Electric Plant, it is inevitable that changes will be required to update these criteria. Therefore, as comments arise, th
5、ey should be forwarded to Naval Sea Systems Command (NAVSEA) 05Z3 to keep this standard as current as possible through subsequent revisions. Revisions will be accomplished by the issuance of additional or revised figures to be inserted in the basic standard parts. Superseded pages may be retained fo
6、r reference if so desired. 6. Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems Command, ATTN: SEA 05M2, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Doc
7、ument Comment”. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-2003-2A(SH) i
8、ii CONTENTS PARAGRAPH PAGE 1. SCOPE1 1.1 Scope.1 1.1.1 Application.1 2. APPLICABLE DOCUMENTS 1 2.1 General1 2.2 Government documents 1 2.2.1 Specifications, standards, and handbooks 1 2.2.2 Other Government documents, drawings, and publications.2 2.3 Non-Government publications2 2.4 Order of precede
9、nce2 3. DEFINITIONS .2 4. GENERAL REQUIREMENTS3 4.1 Electrical equipment mounting .3 4.1.1 Installation welding requirements 3 4.1.2 Installation fasteners.3 4.1.3 Holes drilled in beams3 4.1.4 Malleable iron castings.3 4.2 Switchboard mounting 4 4.3 Storage batteries and servicing facilities.4 4.3.
10、1 Storage batteries tray and rack installation5 4.4 Casualty power .6 4.5 Shore power 6 4.6 Grounding of electrical equipment6 4.7 Tangle boxes.6 5. DETAILED REQUIREMENTS.6 6. NOTES .6 6.1 Intended use 6 6.2 Acquisition requirements 6 6.3 Designation of electric plant installation standard methods f
11、igures7 6.4 Subject term (key word) listing.7 6.5 Changes from previous issue 7 APPENDIX A Standard Methods for Mounting Equipment .8 APPENDIX B Switchboard Mounting 48 APPENDIX C Battery Rack Mounting .56 APPENDIX D Casualty Power75 APPENDIX E Shore Power 91 Provided by IHSNot for ResaleNo reproduc
12、tion or networking permitted without license from IHS-,-,-MIL-STD-2003-2A(SH) 1 1. SCOPE 1.1 Scope. This standard covers standard installation methods for casualty power, shore power, electrical equipment, and switchboards. 1.1.1 Application. These installation methods are to be used by all installi
13、ng activities. These methods do not identify ship or type, but do establish minimum standards of acceptance for Naval ships. It is the responsibility of the user activity to determine which method satisfies their requirements. It does not authorize relaxation of any requirement specifically invoked
14、by new construction, conversion, overhaul, or refurbishment contracts. In instances where deviated design requirements (for example, ship type, ship class, and so forth) conflict with the requirements of this standard, the requirements of this standard govern. Any deviation for electric plant instal
15、lation identified in this standard is to be submitted to NAVSEA 05Z3 for resolution. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this standard. This section does not include documents cited in other sections of this standard or re
16、commended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this standard, whether or not they are listed. 2.2 G
17、overnment documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL
18、STANDARDS FED-STD-H28 - Screw-Thread Standards for Federal Services COMMERCIAL ITEM DESCRIPTIONS A-A-50609 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 12 Volt, 15 Ampere-Hour, Type 12V-S-15 AH A-A-50610 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 2 Vol
19、t, 20 Ampere-Hour, Type 2V-S-20 AH A-A-50611 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 6 Volt, 50 Ampere-Hour, Type 6V-S-50 AH A-A-50612 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 12 Volt, 50 Ampere-Hour, Type 12V-S-50 AH A-A-50613 - Battery, Storag
20、e (Portable, Sealed, Maintenance-Free, Lead-Acid), 6 Volt, 100 Ampere-Hour, Type 6V-S-100 AH A-A-50614 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 12 Volt, 100 Ampere-Hour, Type 12V-S-100 AH A-A-50615 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 6 Volt,
21、 130 Ampere-Hour, Type 6V-S-130 AH A-A-50616 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 12 Volt, 130 Ampere-Hour, Type 12V-S-130 AH A-A-50617 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 6 Volt, 200 Ampere-Hour, Type 6V-S-200 AH Provided by IHSNot for
22、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-2003-2A(SH) 2 A-A-50618 - Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid), 6 Volt, 300 Ampere-Hour, Type 6V-S-300 AH DEPARTMENT OF DEFENSE STANDARDS MIL-STD-1310 - Standard Practice for Shipboard Bond
23、ing, Grounding, and Other Techniques for Electromagnetic Compatibility and Safety DOD-STD-2134 - Storage Battery Arrangement for Minimum Stray Magnetic Field (Metric) MIL-STD-3007 - Unified Facility Criteria and Unified Facility Guide Specifications (Copies of these documents are available online at
24、 http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of th
25、is document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. NAVAL SEA SYSTEMS COMMAND (NAVSEA) DRAWINGS 803-6983506 - Electrical Enclosures, Composite, Installation and Details (Copies of this document are ava
26、ilable from Commander, Portsmouth Naval Shipyard, ATTN: Code 280.1, Kittery, ME 03904.) NAVAL SEA SYSTEMS COMMAND (NAVSEA) PUBLICATIONS S9074-AR-GIB-010/278 - Requirements for Fabrication Welding and Inspection, and Casting Inspection and Repair for Machinery, Piping, and Pressure Vessels (Copies of
27、 this document are available from the Naval Logistics Library, 5450 Carlisle Pike, Mechanicsburg, PA 17055 or online at http:/nll.ahf.nmci.navy.mil.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the
28、issues of these documents are those cited in the solicitation or contract. 2.4 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, the text of this document takes precedence. Nothing in t
29、his document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. DEFINITIONS This section is not applicable to this standard. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-2003-2A(SH) 3 4.
30、GENERAL REQUIREMENTS 4.1 Electrical equipment mounting. The installation of electrical equipment shall be in accordance with figures 2A1 through 2A22. Electrical equipment shall be secured in a manner that it does not come into direct contact with the outer shell plating or ballistic surfaces of the
31、 ship. A minimum clearance of 2 inches shall be maintained for inspection and painting. The mounting of electrical equipment on bulkheads subject to condensation, such as the outer surface of refrigerated space boundary bulkheads, shall be avoided. If no other location is feasible, the equipment sha
32、ll be mounted at least 2 inches clear of such surfaces. Also, cable shall not be mounted in direct contact with such bulkheads, but shall use one of the wet location methods. When such surfaces are insulated, appropriate insulation methods shall be used for both equipment and cable. Where necessary
33、to attach electrical equipment to decks or bulkheads within gun and missile blast areas, such equipment shall be mounted to provide a 2-inch minimum clearance between the structure and equipment, and, moreover, such equipment shall be located clear of areas of maximum expected deflection or whip of
34、bulkhead and deck plating in order to prevent breakage or pulling loose of mounting feet. Composite electrical enclosures shall be mounted in accordance with NAVSEA Standard Drawing 803-6983506. 4.1.1 Installation welding requirements. Unless otherwise specified on the individual figure, the welding
35、 of studs, step hangers, tapped pads, mounting pads, extension hangers, and top bracing supports for switchboards shall be in accordance with S9074-AR-GIB-010/278. Pads, studs, and so forth shall be tapped or threaded before being welded to the ships structure. 4.1.2 Installation fasteners. Bolts, n
36、uts, machine screws, and flat and lock washers shall be of commercial grade (5 or better) and material specified. One to five (1-5) threads shall project past locking nuts. Threads shall be American-National firm, coarse series Class 2, unless otherwise specified in a ship contract or ship specifica
37、tion. Thread fastenings shall be as specified in FED-STD-H28. Locking devices shall be used for bolts mounting electrical equipment. Through bolts and self-locking nuts shall be used to mount equipment in gun mounts and in battery compartments. When required by local QA, torque seal shall be install
38、ed on all bus connections in power panels, load centers, switchboards, and power converters upon verification of torque using a calibrated torque wrench. Switchboards and load centers shall have torque seal on bus to bus connections as well as cable connections (vendor or contractor) to bus work upo
39、n verification of torque using a calibrated torque wrench. 4.1.3 Holes drilled in beams. Location of holes drilled in beams for passing cables or securing of supports or equipment shall be on or above the neutral axis. 4.1.4 Malleable iron castings. Malleable iron castings are not approved for any i
40、nstall except as may be noted on the individual figure. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-2003-2A(SH) 4 4.2 Switchboard mounting. Switchboard mounting and bracing shall be in accordance with figures 2B1 through 2B6. The base of
41、each unit shall be adequately secured to the foundation and shall be in a level plane (with reference to ships baseline) when secure. In order to ensure there is no warping of the switchboard framework or misalignment of component parts of the switchboard, the base of each section shall not be out-o
42、f-plane by more than inch after installation, with all securing bolts tightened. Switchboards shall be located so that the base of the units can be bolted directly to the deck stiffeners or foundation and not bolted to a thin deck plate. Foundation bolts of the switchboard units shall be fastened to
43、 metal whose thickness in the immediate vicinity of the bolts is at least equivalent to the bolt diameter. The addition of pads may be necessary to obtain the required thickness or to compensate for the lack of flanges on the deck stiffeners. The requirements regarding rigidity of the switchboard st
44、ructure, the requirements for securing the units to the foundation, and for the foundation in the ship for mounting the switchboard are intended to ensure that the switchboard units after installation in the ship will not display unsatisfactory resonant vibrations. If the horizontal vibration of dec
45、k-mounted switchboard sections or switchboards exceeds 0.040-inch double amplitude, measured on the framework near the top of the structure, top bracing shall be provided. Rigidity of the braces and their attachments shall be adequate to prevent vibration of the top of the section. Shear bolts may b
46、e employed in the braces if provision is made to prevent the brace from striking the section or bulkhead after shearing of the bolt. Horizontal braces are preferred. The angle of inclination of braces shall not exceed 45 degrees from the horizontal. The braces shall possess inherent flexibility in t
47、he vertical direction. Top bracing and installation features shall conform to the methods shown in this section. Bolts, nuts, and washers used to fasten the braces to the switchboard frame shall be held captive by suitable means. Unless other means of bracing are provided, sway bracing shall be prov
48、ided front-to-back on all switchboards and side-to-side on one-section and two-section switchboards. 4.3 Storage batteries and servicing facilities. Storage batteries and service facilities shall be in accordance with figures 2C1 through 2C10, and all batteries shall be valve regulate lead acid (VRL
49、A), unless otherwise approved by NAVSEA 05Z3. The required number of trays or cells shall be connected in series to produce the required voltage. The necessary ampere-hour capacity shall be obtained by the use of the proper size of battery. Batteries may be connected in parallel in order to obtain greater capacities than those available from the largest sized battery. In general, batteries and their applications
