1、MIL-R-20338 59 9777706 0007781, b I METRIC I MIL-R-2033B (NAVY) 18 December 1987 SUPERSEDING El1 L-R - 203311 (NAVY ) 7 September 1954 (See 6.8) IIILITARY SPECIFICATION RELAYS - POWER, ELECTRICAL SPECIALTY, INDUCTION TYPE, NAVAL SHIPBOARD USE This specification is approved for use within the Departm
2、ent of the Navy and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the general requirements for high- impact (HI) shockproof relays for electric equipment for Naval shipboard installation. 1.2 Classification. Relays sh
3、all be of the following categories as specified (see 6.2.1). Category A - 500,000 operations. Category B - 100,000 operations. Category C - 25,000 operations. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part
4、of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation. I I Beneficial comments (r
5、ecommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Propo
6、sal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 5945 DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-2033B 57 799970b 0007382 8 m P
7、l I 13-R 70 3 3B (NAVY) SPECIFICATIONS FEDERAL PPP-F-320 - Fiberboard: Corrugated and Solid, S.heet Stock (Container Grade) and Cut Shapes. NI LITARY MI L-El- 14 - Nolding Plastics and Molded Plastic Parts, NIL- s - 9 o 1 - Shock Tests, H.I. (High Impact); Shipboard Thermosetting. Nachinery, Equipme
8、nt and Systems, Requirements for. NI L-E - 9 17 - Electric Power Equipment, Basic Requirements (Naval Shipboard Use). NI L-E - 20 36 - Enclosures for Electric and Electronic Equipment, Naval Shipboard. MIL-P-15024 - Plates, Tags and Bands for Identification of Equipment. PlIL-P-15024/5 - Plates, Ide
9、ntification. MIL-E-17555 - Electronic and Electrical Equipment, Accessories, and Provisioned Items (Repair Parts): Packaging of. MIL-L-19140 - Lumber and Plywood, Fire-Retardant Treated. NIL-R-19523 - Relays, Control, Naval Shipboard. STANDARDS I fi1 LITARY MIL-STD- 105 MIL-STD- 109 MIL-STD- 130 MIL
10、-STD-167-1 Fl I L- STD - 2 O 2 NIL- STD - 4 6 1 MI L - STD - 4 6 2 MIL-STD-47 1 MIL- STD - 740 MI L- STD - 7 8 1 MIL-STD-8 10 DOD-STD-1399 Section 300 - Sampling Procedures and Tables for Inspection - Quality Assurance Terms and Definitions. - Identification Marking of US Military Property. - Nechan
11、ical Vibrations of Shipboard Equipment by Attributes. (Type I - Environmental and Type II - Internally Excited). - Test Methods for Electronic and Electrical Component Parts. - Electromagnetic Emission and Susceptibility Requirements for the Control of Electro- magnetic Interference. Neasurement of.
12、 Evaluation. and Acceptance Criteria of Shipboard Equipment. Development, Qualification and Production. Guidelines. Electric Power, Alternating Current. (Pletric) - Electromagnetic Interference Characteristics, - Maintainability Verification/Demonstration/ - Airborne and Structureborne Noise Measure
13、ments - Reliability Testing for Engineering - Environmental Test Methods and Engineering - Interface Standard for Shipboard Systems Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L - MIL-R-2033B 57 M 777770b 0007783 T = I 5 5 . 3. REQUIREMENTS Fi1 L
14、-R- 20 3 3B (NAVY) 2.1.2 Other Government document. The following other Government document forms a part of this specification to the extent specified herein. Unless otherwise specified, the issue shall be that in effect on the date of the solicitation. DEPARTPENT OF LABOR Code of Federal Regulation
15、s, Title 29 Part 1910 Occupational Safety and Health Standards (Application for copies should be addressed to the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.) (Copies of specifications, standards, and other Government documents required by contractors in conne
16、ction with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2.2 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein (except for associated detail specificati
17、ons, specification sheets or lis standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3.1 First article. When specified in the contract or purchase orde
18、r, a sample shall be subjected to first article inspection (see 4.3 and 6.3). 3.2 Safety. The equipment shall provide fail-safe features for safety of personnel during the installation, operation, maintenance, and repair or interchanging of a complete equipment assembly or component parts thereof. E
19、quipment design for personnel safety shall be equal to or better than the appropriate requirements of the Occupational Safety and Health Act (OSHA) as identified in Title 29, Part 1910, of the Code of Federal Regulations (CFR). Except as required herein, safety design requirements shall be in accord
20、ance with MIL-E-917. 3.2.1 Leakage current. Leakage current shall not exceed 5 milliamperes in accordance with MIL-E-917 (see 4.5.4.7). 3.2.2 Carcinogens. Certain chemicals have been identified in OSHA as cancer producing substances (carcinogens). Before using any materials which might contain these
21、 chemicals, they shall be evaluated in accordance with the CFR, Title 29, Chapter XVII, Part 1910. 3.2.3 Ozone. Ozone shall not be liberated by or from the equipments in amounts to cause a concentration greater than either 0.1 part per million (p/m) average or 0.3 p/m peak within a 28.3 cubic meter
22、room during an 8 hour period. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-2033B 57 D 999970b 00077i.i I 3.3 Materials, parts, and processes. Naterials, parts, and processes shall be in accordance with MIL-E-917. 3.3.1 Recovered materials. U
23、nless otherwise specified herein, all equipment and articles incorporated in the products covered by this specifi- cation shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered
24、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. interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically s
25、pecified. None of the above shall be 3.3.2 Toxicity. The material shall have no adverse effect on the health of personnel when used for its intended purpose (see 4.3.4). Questions pertinent to this effect shall be referred by the contracting activity to the Naval Nedical Command who will act as an a
26、dvisor to the contracting activity. 3.3.3 Material compatibility. Materials which through outgassing or other physical phenomena cause deterioration of other materials or degradation of equipment performance shall not be used. 3.3.4 Nonstructural parts. Nonstructural parts such as terminal boxes, ho
27、using, ducts, and similar parts shall be fabricated from aluminum alloy. 3.4 Construction. Unless otherwise specified herein, the construction of the relay shall be in accordance with MIL-E-917. 3.4.1 Class of insulation. The class of insulation shall be in accordance with NIL-E-917, class B, except
28、 that coils may be class A or H. 3.4.2 Molded plastic. In general, molded plastic parts used for electrical insulating purposes shall conform to type MAI-60 in accordance with NIL-M-14. resistant materials shall be made. Existing stocks of molded parts using approved grades of asbestos-phenolic mold
29、ing material may be utilized until exhausted. Additional shock tests on devices using the new materials produced from old molds or dies (originally designed for CFI or MFI material) shall not be necessary. Where existing molds or dies are not reasonably adaptable to molding the new materials, it wil
30、l be satisfactory to continue using the present molding compound for the life of the mold subject to approval of the contracting activity. The use of any other molded material shall be subject to the approval of the contracting activity. An orderly changeover to these new glass-filled fire and arc 3
31、.4.3 Input power. The relay shall fully meet the performance requirements of 3.7 when energized by type I power in accordance with DOD-STD-1399, section 300 (see 4.5.4.8). 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-R-2033B 59 9979706 0007
32、785 3 FI IL -R - 2 O 3 3B (NAVY ) 3.4.4 Characteristics. Relays shall have the following characteristics 0 as specified (see 6.2.1): 5 Type : Overload: magnetic Auxiliary Voltage Current Reverse current Activating characteristics: Inst ant aneous Invers e time Definite time Vo It age : Alternating c
33、urrent (ac) 28 volts, single phase 115 volts, single phase 230 volts, single phase 440 volts, single phase 110 volts, three phase 220 volts , three phase 440 volts, three phase Special, all others Direct current (dc) 28 volts 115 volts 230 volts 250 volts (nominal), operating range 175 to 355 volts,
34、 Submarine service 500 volts (nominal), operating range 350 to 710 volts, submarine service Special, all others Current : Ac or dc (operating values shall be as specified (see 6.2.1) Time delay: 0.1 second - 10 seconds 3.4.5 General features. 3.4.5.1 Frequency. Unless otherwise specified (see 6.2.1)
35、, ac relays shall be designed for operating at a frequency of 60 hertz (Hz). 3.4.5.2 Duty. 3.4.5.2.1 Continuous duty. Relays designed for continuous duty shall operate under rated conditions for an indefinite period without exceeding the limitations specified herein. Provided by IHSNot for ResaleNo
36、reproduction or networking permitted without license from IHS-,-,-MIL-R-2033B 57 7477706 0007786 5 ElII,-R-20 3 3B (NAVY) O 3.4.5.2.2 Intermittent duty. Relays designed for intermittent duty shall operate under the specified load and time conditions of the connected load without exceeding the limita
37、tions specified herein. 3.4.5.3 Contacts. Contacts shall be of simple and rugged construction and, except for those used on overload relays, shall be easily renewable. The design shall be such that slight projections which may occur during service use shall not prevent proper operation of the contac
38、ts. 3.4.5.4 Springs. Springs shall insure the proper functioning of the equipment to which attached. In no case, however, shall they be stressed beyond their fatigue limits. Where the design is such that springs are utilized to carry current, the value of current shall be limited to such a degree th
39、at - 6 the mechanical characteristics of the springs are not impaired. The preferred method of limiting current in springs is shunting by means of a pigtail or b braid. . 3.4.5.5 Flagnet coils. Magnet coils, of the removable type, shall be readily removable from the relay without injury to the coil.
40、 The coils shall be rigidly held so as to prevent damage to the coil leads. llagnet coils shall be marked for ready identification. 3.4.5.6 Endurance. Eloving parts and parts subject to burning shall withstand the endurance requirements for the relay specified in 1.2 for mechanical durability and ar
41、c rupturing ability (see 4.5.4.11.2). 3.4.5.7 Shockproofness . Relays shall withstand class HI shock (electrical operation and mechanical damage) in conformance with MIL-S-901 grade, class and type as specified (see 4.5.4.13 and 6.2.1). 3.4.5.8 Vibration. Relays shall withstand type I vibration test
42、s as specified in MIL-STD-167-1, without mechanical damage, contact chatter, or other maloperation. 3.4.5.9 Enclosures. Enclosure shall be in accordance with the applicable requirements of NIL-E-2036 (see 4.5.4.5). 3.5 Reliability. The upper test mean time between failure (MTBF), for continuous and
43、intermittent operation, in accordance with MIL-STD-781, shall be 1500 hours under the environmental conditions specified for the equipment when tested in accordance with 4.5.4.17. 3.6 Maintainability. The relay shall facilitate troubleshooting, fault isolation and repair, down to the lowest non-repa
44、irable part or non-repairable assembly (see 4.5.4.18). 3.6.1 Interchangeability. In no case shall parts be physically inter- changeable or reversible unless such parts are also interchangeable or rever- sible with regard to function, performance and strength. e Provided by IHSNot for ResaleNo reprod
45、uction or networking permitted without license from IHS-,-,-MIL-R-2033B 57 7777906 0007787 7 W Vo 1 tage Pl1 L-R - 2 O 33B (NAVY) Percent of nominal voltage Application Pick-up and seal I Op er at ion I 3.7 Performance. Ac Dc Dc 3.7.1 Relay coil resistance, power consumption, and power factor. Relay
46、 coil resistance, power consumption and power factor shall be within 10 percent of the value shown on drawings specified in 3.15 (see 4.5.4.11.1). All vessels Surface vessels only Submarines only 3.7.2 Auxiliary relays, two position relays, latching relays, and magnetic resets. When employing shunt
47、coils, auxiliary relays, two position relays, latching relays, and magnetic resets, they shall operate satisfactorily within the limits specified in table I. TABLE I. Operating limits. 75 f 5 75 rt 5 65 rt 5 80 to 120 80 to 120 70 to 140 I I I 3.7.2.1 Drop-out voltage. Relays shall drop out at betwe
48、en 35 to 65 percent of the rated voltage at the rated frequency unless otherwise approved by the contracting activity (see 6.4.20). 3.7.3 Reverse current. 3.7.3.1 Polarity. The polarity for reverse current relays shall be clearly marked to insure proper connection in the circuit. 3.7.3.2 Sensitivity
49、. Operation shall occur when current in the reverse direction has reached a value not greater than 5 percent of the rating, unless otherwise approved by the contracting activity. 3.7.4 Overload relays. 3.7.4.1 Compensation. Overload relays shall be of the compensated type. 10 degrees Celsius (OC) change in ambient temperature in the range between 20 and 7OoC. curves, nor the average change per 10C between any other two curves shall exceed 3.0 percent, base
