1、F=lMIL-STD-1542B (USAF)15NOV 91SUPERSEDINGMIL-STD-1542A (USAF)Dated01MAR 88I MILITARY STANDARDELECTROMAGNETIC COMPATIBILITYANDGROUNDING REQUIREMENTSFORSPACE SYSTEM FACILITIES -AMSC NIA AREA EMCSDISTRIBUTIONSTATEMENT A:Approvedforpublicrelease;distributionunlimited.Provided by IHSNot for ResaleNo rep
2、roduction or networking permitted without license from IHS-,-,-MIL-sTD-1542B (USAF)15 NOV 91FOREWORD1. This military standard is approved for use by the SpaceSystems Division, Department of the Air Force, and is availablefor use by all Departments and Agencies of the Department ofDefense.! 2. Benefi
3、cial comments (recommendations, additions,deletions) and any pertinent data which may be of use inimproving this document should be addressed to:USAF Space Systems Division, SSD/SDFCP. O. BOX 92960Worldway Postal CenterLos Angeles, CA 90009-2960iiby using the selfaddressed Standardization Document I
4、mprovementProposal (DD Form 1426) appearing at the end of this document orby letter.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-sTD-1542B (U5AF)15 NOV 91CONTENTSI 1.1.11.22.2.12.22.33.It3.13.23.33.43.53.63.73.83.93.103.113.123.134.4.14.24.34.
5、44.54.65.5.15.1.15.1.2PAGESCOPE 1PURPOSE 1APPLICATION 1REFERENCED DOCUMENTS . 3GOVERNMENT DOCUMENTS. 3NONGOVERNNENT DOCUMENTS. . 4ORDER OF PRECEDENCE . 5DEFINITIONS 7FACILITY . 7SPACE SYSTEM FACILITY .”. 7FACILITY GROUND NETWORK. . 7LOW FREQUENCY CIRCUITS. 8HIGH FREQUENCY CIRCUITS. . 8SINGLE POINT G
6、ROUNDING. 8MULTIPOINT GROUNDING. 9EQUIPOTENTIAL PLANE .: 9TECHNICAL POWER 9FACILITY POWER. 9CATHODIC PROTECTION 9PRIMARY POWER 1(ISECONDARY POWER 10GENERAL REQUIREMENTS . 11ELECTRICAL POWER CHAIUCTERISTICS . 11ELECTROMAGNETIC COMPATIBILITY 11SHIELDING 11FACILITY GROUND NETWORK. . 11ELECTRICAL BONDIN
7、G . 12FILTERING 12DETAILED REQUIREMENTS. . 13ELECTRICAL POWER. 13Electrical Power Characteristics, 13Electrical Power Distribution 135.1.2.1 Technical Power 135.1.2.2 Facility Power. 145.1.3 Power Grounding 145.1.3.1 Primary Utility Power 14iiiProvided by IHSNot for ResaleNo reproduction or networki
8、ng permitted without license from IHS-,-,-MIL-STD-1542B (USAF)15 NOV 91CONTENTSPAGEI5.1.3.25.1.3.35.1.3.45.1.3.55.1.3.65.1.3.75.1.3.85.1.3.95.25.2.15.2.2Secondary Power 14Ground Fault Circuit Interrupters 14Power Sources 14Thermostats and Heaters 14Small Power Tools 15Shop Equipment . 15Voltage Regu
9、lators and Transformers 15Power Control and Switching Equipment 15ELECTROMAGNETIC COMPATIBILITY .15Facility Interference Limits . 15EMC Testing 155.3 SHIELDING 155.3.1 General 155.3.1.1 Wire Shielding . 165.3.1.1.1 General 165.3.1.1.2 Grounding 165.3.1.1.3 Isolation 165.3.1.1.45.3.1.25.3.1.2.15.3.1.
10、2.25.3.1.2.35.3.1.2.45.3.1.35.3.1.3.15.3.1.3.25.3.1.3.35.3.1.3.45.3.1.3.55.3.1.3.65.3.1.3.7tWire and Cable Routing . 16 IShielded Equipment Enclosures .16Materials and Workmanship.Gaskets .Filters.Access or Ventilation Open:Shielded RoomsGeneral .Doors.Grounding .Transformers and Filters . 18Penetra
11、tions . 18Quality Assurance 18Testing 18. . . . . . . . . . . . . . . . . . . . 161617rigs 17 I171717. 175.4 FACILITY GROUND NETWORK. . 18 I5.4.15.4.1.15.4.1.25.4.1.35.4.1.45.4.1.55.4.1.65.4.1.7Earth Electrode Subsystem. . 18General 18Earth Resistivity Survey. 18Resistance to Earth. . 19Earth Electr
12、ode Subsystem Configuration 19Ground Rods 20Ground Feeders . 20Power Transformer Grounding 20ivProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IMIL-sTD-1542B (USAF)15 Nov 91CommrrsPAGEI5.4.1.85.4.1.95.4.1.105.4.1.115.4.1.125.4.1.135.4.1.145.4.1.155.4
13、.1.15.15.4.1.15.25.4.25.4.2.15.4.2.25.4.2.35.4.2.45.4.2.5.5.4.2.65.4.2.75.4.2.85.4.35.4.3.15.4.3.25.4.3.3 5.4.3.45.4.45.4.4.15.4.4.25.4.4.35.4.4.4Ground Isolation . 20Service Structures . 20Service Structure Tracks . 20Launchpad Structure. 20Passageways 21Security and Perimeter Fences 21Cathodic Pro
14、tection 21Testing 21Resistance Measurements. . 21Cathodic Protection. . 21Lightning Protection Subsystem .:. 21Buildings and Structures . 21Air Terminals (Lightning Rods) . 21Roof and Down Conductors 22Structural Steel. 22Waveguide Grounding 22Exterior Wires and Cables. . 22Bonds 23Lightning Transie
15、nt Protection . 23Equipment Fault Protection Subsystem . 23General 23Conduit. Piues and Tubes . 23Cable Trays-or Raceways Equipment Enclosures .Signal Reference Subsystem (Techn:General Low Frequency Circuits . . . . . . . . . . . . . . . . . 23. 24cal Ground) 24. 24. 24High Frequency Circuits 24Equ
16、ipments Containing Both High and LowFrequency Signal Circuits 255.5 FILTERS 255.5.1 General 255.5.2 Requirements . 255.5.2.1 Filters 255.5.2.2 Design . 265.5.2.3 Fungus Resistance 265.5.2.4 Dissimilar Metals 265.5.3 Test Requirements 265.5.3.1 Qualification Testing 265.5.3.2 Insertion Loss. 26vProvi
17、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1542B (USAF)15 NOV 91CONTENTSPAGE5.65.6.15.6.25.6.35.6.45.6.55.6.65.6.7BONDING 26General 26Corrosion Protection. 26Bond Straps 27Bond Resistance 27Welding 27Brazing and Silver Soldering . 27Bonding o
18、f Copper to Steel. 285.6.8 Structural Steel. 285.6.9 Metal Passageways. 285.6.10 Facility Structural Steel 285.6.11 Movable Metallic Items”.285.6.12 Bond Protection 285.6.13 Compression Bonds in Protected Areas . 285.6.14 Bonding Tests 29”5.6.14.1 Facility Bonding Test 295.6.14.2 Bonding Joints . 29
19、5.6.14.3 Test Equipment . 295.6.14.4 Test Procedure . 295.6.14.5 Success Criteria . 295.6.14.6 Data Requirements 295.7 NATIONAL SECURITY INFORMATION (RED/BLACK EQUIPMENTS). 306.4 SUBJECT TERM6.5 SUPERSESSION6. NOTES 316.1 INTENDED USE. 316.2 TAILORED APPLICATION. 316.3 TOTAL QUALITY MANAGEMENT. 31(K
20、HWORD) LISTING 32DATA 33FIGURESFigure 1 -Figure 2 Figure 3.Figure 4 -Low Frequency Technical Grounding 34Typical Equipotential Ground Plane Networkfor Multistory Buildings 35High Frequency Equipment Grounding Network . 36Shielded Room Grounding Network 37viProvided by IHSNot for ResaleNo reproductio
21、n or networking permitted without license from IHS-,-,-I Figure 5 .-Figure 6 -IFigure 7 Figure 8 -Figure 9 MIL-STD-1542B (USAF)15 NOV 91CONTENTSPAGEDetails of Ground Rod or Earth ElectrodeSubsystem Installation. 38Connections to Earth Electrode Subsystem . 39Air Terminal Placement on Flat-roofed Str
22、ucture 40Equipment Fault Protective Subsystem Grounding . 41Elements of the Signal Reference GroundSubsystem (with Equipotential Plane Ground) .,.42IIFigure 10 - Detail of Typical Equipotential Ground PlaneI for New Construction - High FrequencyFacilities Installation. .43viiProvided by IHSNot for R
23、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1542B (u.5AF)15 NOV 91THIS PAGE INTENTIONALLY LEFT BLANKviiiProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IL-STD-1542B (u5AF)15 NOV 91SECTION 1SCOPE1.1 PURPOSEThe pur
24、pose of this standard is to specify the design,performance, and verification requirements for electricalsubsystems for space system facilities, including electromagneticcompatibility (EMC), electrical power, grounding, bonding,shielding, lightning protection, and TEMPEST security. Theserequirements
25、are interrelated and interdependent, and thereforerequire an integrated approach in the design.1.2 APPLICATIOXlThis standard is intended primarily for use in design andconstruction contracts for space system facilities. Therequirements are applicable to all related facilities including,but not limit
26、ed to, launch complexes, tracking stations, dataprocessing rooms, satellite control centers, checkout stations,spacecraft or booster assembly buildings, and any associatedstationary or mobile structures that house electrical andelectronic equipment.The requirements are not intended to beae!?licablet
27、o Lon9 Hall/Tactical Communication System Facilities(see MIL-STD-188-124A). The technical requirements for GroundSupport Equipment (AGE) used in direct support of space vehiclesare contained in MIL-STD-1541.The technical requirements forequipments installed in ground facilities (not a part of thefac
28、ility) are contained in MIL-STD-461.1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILsTD-1542B (USAF)15 NOV 91THIS PAGE INTENTIONALLY LEFT BLANK2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
29、sTD-1542B (USAF)15 NOV 91ISECTION 2REFERENCED DOCUMENTS2.1 GOVERNMENT DOCUMENTSUnless otherwise specified, the following specifications,standards, and handbooks of the issue listed in that issue ofthe Department of Defense Index of Specifications and Standards(DoDISS) specified in the solicitation f
30、orm a part of thisstandard to the extent specified herein:MILITARY SPECIFICATIONS:MIL-E-4158 Electronic Equipment Ground: GeneralSpecification ForMIL-F15733 Filter, Radio Interference, GeneralSpecification forMILITARY STANDARDS:MILSTD188124MILSTD220MIL-STD-285MILSTD-461MILSTD462MIL-STD-463MIL-STD-88
31、9MILSTD1541Grounding, Bonding, and Shielding forCommon Long Haul/TacticalCommunications SystemsMethod of Insertion-Loss MeasurementsAttenuation Measurement for Enclosures,Electromagnetic Test Purposes, Method ofElectromagnetic Emission andSusceptibility Requirements for theControl of Electromagnetic
32、 InterferenceElectromagnetic InterferenceCharacteristics, Measurement ofDefinitions and Systems of Units,Electromagnetic Compatibility TechnologyDissimilar MetalsElectromagnetic CompatibilityRequirements for Space SystemsMILITARY HANDBOOKS:MIL-HDBK419 Grounding, Bonding and Shielding forElectronic E
33、quipments and Facilities3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILSTD1542B (USAF)15 NOV 91OTHER GOVERNMENT DOCUMENTS :AFM 884 Facility Design r a obinatiofi thereof.The signal reference system shall not be used inlieu of safety ground condu
34、ctors (green wires) asa path for fault currents.3.4 LOW FREOUENCT CIRCUITS.For the purposes of this standard, low frequency electricaland electronic circuits are those that operate in the frequencyrange from dc to 30 kilohertz.3.5 HIGH FREOUE NCY CI RCUITS .In this standard, high frequency electrica
35、l or electroniccircuits are those that operate above 30 kilohertz.3.6 SINGLE POINT GROUNDING.method of circuit and shieldof the system or subsystem hasa ground reference subsystem,given system or subsystem.Single point grounding is agrounding in which each circuitonly one physical connection toideal
36、ly at the same point for aSingle point grounding is effective only for low frequencycircuits where it is applied to prevent return currents fromflowing in structural elements resulting in ground loops andground reference potential differences. Power distributioncircuits utilize single point groundin
37、g. (See Figure 1)8IlProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I 3.7 MULTIPOINTMIL-sTD1542t3 (uSAF)15 NOV 91GROUNDING.Multipoint grounding is a method of circuit and shieldgrounding which provides multiple low impedance paths for highfrequency s
38、ignals to an equipotential plane constituting theground reference for high frequency signals and signaltransmission circuits. Multipoint grounding requires theexistence of an equipotential ground plane (See 3.8). Multipleconnections are made to the equipotential plane for highfrequency circuits by t
39、he shortest, lowest impedance method.I High frequency circuits utilize multipoint grounding to theearth electrode subsystem.3.8 EQUIPOTENTIAL PLANE.An equipotential plane is a mass or surface of metal (solidor grid) that offers a negligible impedance to current flow sothat differences in electrical
40、voltage are minimized across theplane (see Figures 2 and 3). An equipotential plane isconsidered an earth ground for a signal reference subsystem(technical ground) regardless of its elevation from physicalearth. The equipotential plane has multiple connections tostructural steel and to the earth ele
41、ctrode subsystem.3.9 TECHNICAL POWER.Technical power is the electrical power supplied to powercircuits of technical equipment used for the operationalsupport of a military space system, such as: checkoutequipment, test equipment, communications equipment, and dataprocessing equipment. Surge loads an
42、d electromagneticinterference are limited to prevent damage or malfunction ofelectrical or electronic equipment. Large motors required toI operate technical equipment are not connected to technicalpower circuits.3.10 FACILITY POWER.Facility power is the electrical power supplied to afacility for lig
43、hting, heating, air conditioning, large surgeloads, large electric motors, and other station-keepingfunctions.3.11 CATHODIC PROTECTION ,A technique to prevent corrosion of a metal surface bymaking that surface the cathode of an electrochemical cell.Provided by IHSNot for ResaleNo reproduction or net
44、working permitted without license from IHS-,-,-MIL-sTD-1542B (USAF)15 NOV 913.12 PRIMARY POWRR.Primary power is the electrical power supplied to afacility from a utility or generation source.3.13 SECONDARY POWRR.Secondary power is electrical power that has passed througha conditioning device such as
45、 a transformer or converter.An uninterruptible power system is a back-up electricalpower system to provide continuous electrical power for aperiod of time in the event of the failure the main powersource.3.15 LOW LEVRL SIGNAL LINRSI LOWof less level signal lines are those that have maximum voltagest
46、han one volt.10Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1542B (USAF)15 NOV 91IIISECTION 4GENEIWL REQUIREMENTS4.1 ELECTRICAL PoWER CHARACTE RISTICS.When commercial electrical power quality or reliability isnot sufficient to meet the pro
47、gram requirements, alternatemethods such as dedicated power generation, power conditioning,motor generators, or uninterruptible power systems (UPS) shallbe evaluated and utilized as required to meet the program needs.4.2 ELECTROMAGNET IC COMPATIBILITY.Facility electrical and electronic subsystems an
48、d equipmentshall be compatible with each other as well as with thetechnical equipment installed in the facility for support ofspace system operations. To achieve this goal with a highprobability of success the imposition of conducted and radiatedEMI limits on the facility equipment is required.4.3 SHIELDING.Shielding shall be provided for the protection of circuits,equipment, and groups of equipment; for electromagneticcompatibility within the system; and to comply with security(TEMPEST) requirements.4.4 FACILITY GROUND NE3WORK .All space system facilities contai
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