1、MIL-G-2L4LOA bL m 999970b 0500785 3 m b i Type DE - For diesel generator sets. Type ST - For steam turbine generator sets. Type GT - For single-shaft gas turbine generator sets. I METRIC MIL-G-21410A(SH) 23 December 1991 SUPERSEDING 7 August 1966 MIL-G-21410(SHIPS) MILITARY SPECIFICATION GOVERNING S
2、YSTEMS, SPEED Shipboard MIL-E-917 - Electric Power Equipment, Basic Requirements (Naval MIL-1-1361 - Instrument Auxiliaries, Electrical Measuring: MIL-E-2036 - Enclosures for Electric and Electronic Equipment, MIL-P-15024 - Plates, Tags and Bands for Identification of MIL-P-15024/5 - Plates, Identif
3、ication. MIL-S-15291 - Switches, Rotary, Snap Action and Detent/Spring Return Action, General Specification for. MIL-T-16315 - Transformers, Power, Step-Down (Miscellaneous, Naval Shipboard Use). MIL-E-17555 - Electronic and Electrical Equipment, Accessories, and Provisioned Items (Repair Parts): Pa
4、ckaging of. Equipment, MIL-S-18396 - Switches, Meter and Control, Naval Shipboard. MIL-L-19140 - Lumber and Plywood, Fire-Retardant Treated. MIL-S-19500 - Semi-conductor Devices, General Specification for. MIL-R-19523 - Relays, Control. MIL-C-28748 - Connectors, Electrical, Rectangular, Rack and Pan
5、el, Solder Type and Crimp Type Contacts, General Specification for. MIL-M-38510 - Microcircuits, General Specification for. MIL-P-55110 - Printed-wiring Boards, General Specification for. MIL-C-55302 - Connectors, Printed Circuit Subassembly and MIL-C-83723 - Connectors, Electrical, (Circular, Envir
6、onment Accessories. Resisting), Receptacles and Plugs, General Specification for. STANDARDS MILITARY MIL-STD-108 - Definitions of and Basic Requirements for Enclosures for Electric and Electronic Equipment. MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type
7、 II - Internally Excited). Electric Generator Sets. MIL-STD-178 - Definitions Applicable to Speed-Governing of 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-21410A 61 m 999990b 0500787 7 m MIL-G-21410A(SH) MILITARY (Continued) MIL-STD-202 -
8、 Test Methods for Electronic and Electrical MIL-STD-275 MIL-STD-461 MIL-STD-462 MIL-STD-471 MIL-STD-701 MIL-STD-721 MIL-STD-781 MIL-STD-1331 Component Parts. - Printed Wiring for Electronic Equipment. - Electromagnetic Emission and Susceptibility Requirements for the Control of Electromagnetic Inter
9、ference. Measurement of. Evaluation. - Electromagnetic Interference, Characteristics, - Maintainability Verification/Demonstration/ - List of Standard Semiconductor Devices. - Definitions of Terms for Reliability and - Reliability Testing for Engineering Development, - Parameters to be Controlled fo
10、r the Specifications Maintainability. Qualification, and Production. of Microcircuits. HANDBOOKS MILITARY MIL-HDBK-217 - Reliability Prediction of Electronic Equipment. (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standar
11、dization Documents Order 0 Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. ) 2.1.2 Other Government documents. drawinm, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwis
12、e specified, the issues are those cited in the solicitation. PUBLICATIONS DEPARTMENT OF LABOR (OSHA) Code of Federal Regulations (CFR) 29 CFR, Part 1910.1200 - Occupational Safety and Health Standards. (The Code of Federal Regulations (CFR) and the Federal Register (FR) are for sale on a subscriptio
13、n basis by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. When indicated, reprints of certain regulations may be obtained from the Federal agency responsible for issuance thereof. ) NAVAL SEA SYSTEMS COMMAND (NAVSEA) 0967-LP-312-8010 - Electronic Equipment, S
14、hipboard, Maintainability Design Criteria Handbook for Designers of. a (Application for copies should be addressed to the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without l
15、icense from IHS-,-,-MIL-G-21410A 61 m 999990b 0500788 9 m MIL-G-21410A(SH) 2.2 Order of precedence. 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 this document, however, supersedes applicable laws
16、and regulations unless a. specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.6) in accordance with 4.3. 3.2 Materials. Materials shall be in accordance with MIL-E-917. 3.2.1 Recovered mater
17、ials. Unless otherwise specified herein, all equipment, material, and articles incorporated in the products covered by this specification shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The
18、term “recovered materials“ means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials None of the above shall be interpreted to mean that the use of used or rebuilt products is allowed under this spe
19、cification unless otherwise specifically specified. 3.2.2 Nonstructural parts. Nonstructural parts such as terminal boxes, housing, ducts, and similar parts shall be fabricated from aluminum alloy, where feasible. 3.2.3 Prohibited materials. Regardless of any other requirements, materials and parts
20、containing radioactive material, mercury, cadmium, asbestos, or other materials giving off toxic fumes under operating or casualty conditions, shall not be used. 3.3 Construction. 3.3.1 General. Unless otherwise specified herein, the governing system shall be in accordance with MIL-E-917 (see 6.3).
21、3.3.2 Reliability and maintainability. 3.3.2.1 Definitions. Unless otherwise specified herein, definitions of terms for reliability and maintainability shall be in accordance with MIL-STD-721. 3.3.2.2 Reliability. A reliability measure shall be mean time between failures (MTBF) in accordance with MI
22、L-STD-781 (see 6.3). The MTBF shall be greater than 25,000 hours. 3.3.2.2.1 Equipment failures. Governing systems failure shall be defined as inability of the system to perform and function within the requirements of this specification. 3.3.2.2.2 Failure rate data. Failure rate data used shall be as
23、 given in MIL-HDBK-217, within the applicability constraint. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-ZL4LOA bL m 777770b 0500787 O m MIL-G-2141OA(SH) 3.3.2.2.3 Stress levels. Stress levels shall be calculated from design data be less
24、in accordance with MIL-HDBK-217. 3.3.2.3 Maintainability. 3.3.2.3.1 Maintainability measure. The measure of maintainability shall equipment repair time (ERT) in accordance with MIL-STD-471. The ERT shall be than 3 hours. No repair shall require more than 10 hours. 3.3.2.3.2 Maintainability design. M
25、aintainability design shall be in accordance with NAVSEA 0967-LP-312-8010 (see 6.3). 3.3.3 Detail requirements. 3.3.3.1 Basic requirements. The governor system shall be designed for two modes of operation: isochronous and droop. (a) Transfer between the two modes of operation shall be accomplished b
26、y the operator using the mode control selector. System shall allow transfer between modes while in operation and without abnormal reaction during transfer. (b) The mean governed speed shall be adjustable by means of the speed changer during both modes of operation. (c) The speed regulation changer s
27、hall have no effect on steady state speed regulation (or mean governed speed) in the isochronous mode. In the droop mode, it shall be capable of adding positive steady state speed regulation to that obtainable in the isochronous mode. 3.3.3.2 Enclosure and mounting. The governor system components sh
28、all be designed for the following mounting: Governor electrical control equipment - mounted within switchgear Manual speed changer (rheostat) - back of board mounting, front of Motor operated speed changer control switch - back of board Mode control switch - back of board mounting, front of board No
29、rmal high-speed stop override switch - back of board mounting, Normal/overspeed selector switch - back of board mounting, front of Manual overspeed potentiometer - back of board mounting, front of Unless otherwise specified in the applicable generator set enclosure or separately mounted, as specifie
30、d (see 6.2). board operation. mounting, front of board operation. operation. front of board operation. board operation. board operation. specification, all other adjustments or selectors are behind board mounted and operated. 3.3.3.2.1 Ambient. Switchgear enclosed or separately mounted equipment sha
31、ll be designed for 50 degrees Celsius (“C) ambient. Equipment shall remain operable at an ambient of 0C. Equipment shall withstand a non-operating (storage) temperature range of minus 40 to 85C. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.3
32、.2.2 Enclosures. Enclosures for separately mounted systems (see 3.3.3.2) shall be spraytight protected in accordance with MIL-E-2036. Ready accessibility of electrical connections, test points, and adjustments shall be provided for convenience in installation and maintenance. Enclosures and framewor
33、k shall be constructed of steel, aluminum, or both. The use of aluminum for weight reduction is considered desirable and shall be used if structurally suitable, 3.3.3.2.3 Cooling. Unless otherwise specified (see 6.2), cooling shall be accomplished by natural convection. 3.3.3.3 Reactors. Reactors sh
34、all be in accordance with the materials and methods of manufacture of MIL-E-917 except as follows: (a) Allowable temperatures and insulation classes shall be as specified in table I. TABLE I. Maximum permissible temperature (“C) (continuous rated load) Insulation class !Jarne of part I-/ A B F H ;oi
35、ls : Windings measured by thermocouples or thermometers 90 110 Windings measured by resistance 100 120 Cores and mechanical parts adjacent to insulation 90 110 All classes Zapacitors - air within 1.27 cm (1/2 inch) of case Zectifiers Zheostats and resistors: Bare resistor material Resistor embedding
36、 material 3olted connection and terminal studs: Not plated Silver plated :ontact: Solid Solid silver faced 135 145 135 85 2/ 425 350 100 115 120 130 170 190 170 - 1/ Where no measurement method is indicated, thermometer or thermocouple method shall be used. and transistors-permissible temperature ri
37、se on these parts is dependent upon operating conditions. Maximum permissible case temperature shall be shown on the equipment drawing. - 2/ Silicon rectifiers, voltage reference elements, voltage regulator elements, 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
38、nse from IHS-,-,-MIL-G-21410A 61 m 9999906 0500793 9 m MIL-G-2141OA(SH) 3.3.3.4 Transformer application. Current, potential, or combination transformers shall be provided for each governor system and no other burden shall be placed on them. Transformers shall be ungrounded. Open delta connections of
39、 potential transformers shall not be permitted. 3.3.3.4.1 Potential and combination transformers. Potential or combination transformers shall be in accordance with type SA of MIL-T-16315, and shall conform to the materials and methods of manufacture of MIL-E-917 except as follows: (a) Allowable temp
40、eratures and insulation classes shall be as specified in table I. 3.3.3.4.2 Current transformers. Current transformers used in the real load compensation circuits shall be designed for either generator or switchboard mounting as required by specific application. Current transformers shall be in acco
41、rdance with class 3 of MIL-1-1361 and shall conform to the materials and methods of manufacture of MIL-E-917 except as follows: (a) Allowable temperatures and insulation classes shall be as specified (b) The current ratio, phase angle error, ratio error, and burden shall in table I. be as required f
42、or the particular application. 3.3.3.5 Semiconductor devices. Semiconductor devices used in the equipment shall be silicon. 3.3.3.5.1 Microcircuits. Integrated circuits shall be selected from MIL-STD-1331 and shall be in accordance with MIL-“38510. 3.3.3.5.2 Discreet devices. Semiconductor devices,
43、other than th0s.e specified in 3.3.3.5.1, shall be selected from MIL-STD-701 and shall be in accordance with MIL-S-19500. The use of devices not listed in MIL-STD-701 shall require specific approval in accordance with MIL-E-917. 3.3.3.6 Prohibited parts. The governor system shall not employ vibratin
44、g contacts, carbon piles, or electron tubes. 3.3.3.7 Operating modes. The governor system shall have the following operating modes: (a) Isochronous. Steady state speed regulation shall be as specified in 3.4.2. Where parallel operation is required (see 6.2), real load (kilowatts (kW) differential co
45、mpensation shall be performed in order to maintain isochronous speed regulation and real load (kW) balance. Performance of kW load sharing system shall be as specified in 3.5.7.1. adjusted in the negative direction with increasing kW load by the droop control circuit. Droop mode shall provide stable
46、 operation with dissimilar governors, infinite bus (shore power) or another generator set with the same governor system operated in isochronous. (b) Droop (speed-load characteristic). Steady state speed shall be 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
47、rom IHS-,-,-MIL-G-ZL410A bL m 9999906 0500792 O m 3.3.3.8 Operators controls. 3.3.3.8.1 Mode control selector. When governor system is mounted either in the switchboard or local control panel and the mode control selector is contained either in the switchboard or local control panel with no remote c
48、ontrol, the mode control selector may be a switch in accordance with MIL-S-15291. The switch shall be for switchboard mounting and shall be rated in accordance with the table for class designation in MIL-S-15291. The mode control selector switch shall have positions designated “Isochronous“ and ttDr
49、oop“. When the governor system is to have a remote mode control selector, actual mode selection shall be accomplished at the governor control assembly by a relay in accordance with MIL-R-19523. Isochronous mode shall be selected when relay coil is de-energized. The relay coil shall be controlled by a mode selector switch in accordance with MIL-S-15291 and as discussed above. 3.3.3.8.2 Speed changer. A speed changer shall be provided for adjustment of the mean gover
