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  • MILITARY STANDARD

    GROUNDING, BONDING AND SHIELDING

    for CommonLong Haul/Tactical Communication Systems

    including Ground Based Communications-Electronics Facilities and Equipments

    MIL-STD-IB8-124B1 Feb 92

    SUPERSEDINGMIL-S?-D-188-124A2 FEBRUARY 1984

    L-AMSC NtA

    AREA SLHCITCTSIEMCS

    DISTRIBWION STATEMENT A. Approved for public rdease; distributi~ is unlimited.

  • MIIXTD-188-124B

    FOREWORD

    1. ~W~&tiiu~mvddA~tir=byW~*d_ oftkDqwtmmt of Defense in wmrdance with Dqartmat of Defense Ir@uction 5000.2, dated 23 February 1991.

    2. Beneficial comments (rwco~ wls, additions, deletions) Und any peztiwnt dllta which may be of use in@XOViIl$j this document should be wkksed to: TIC/IIS, Scott AFB IL 622254343, by wing theselfaddmukd StandardbWion DocumeQt Improvermmt I%posal (DD Form 1426) qpwing atthelmd of thisdocummt or by letter.

    3. Stmduckf mahlilitaryco mmunications am published m part of a MIL-STD-188 mri= of documam:Miiitary Cmmmidl cm System Technical Standurk are subdivided into C4xnmm XMg HauUTacticdStandar& (MIL-STD-188-1OO eoria), Tactical Stmdarcb @fILSD-188-2@ aaries) and Loag Haul Man&r&(MIL-STD-188-300 ties).

    4. rhisdocumm tcxmtain stechn.icalstdards mddesigno bjectivest omsurct heoptimumpd~

    -d- telecoxnmuni

    ofcations C-E equiprncmt imkahtions. This is accmnplishod by reducing noise and by

    providing xkxpk prddkm against power system faults and lightning strikes. Thorough amsideration mustbe given to the grounding of equipment and facility itudbtions, the bonding required, and the methods ofshielding mkd impkxnentat.ion needed for ~1 * ad equi~t cxmtrd.

    5. l%isstandard isalsorecomrncwkd for applicable use on my ground IkiMY or cquipm=t M- ~un~g,bonding, shiekiing, personnel m&/y, i.ightning snd EMC - required. Exampk of such f=ilities are aircrafiSirnukom, cOmputer miters, kboratory buildings, weapons checkout and *ly, etc.

    6. Paragraph 5.1, C3rounding, for this standard is divided as follows:

    L Detailed reqtliremm ts for facilitk, including buildings and associated stmctures used principally forC-E equipment.

    IL Detailed requirements for C-E equipxmnt w#kh address grounding, bonding, and shielding fortactidlong haul fixed ground tnwprtibks and military communications ektronics cquipmcatiIMdhtiOIIS and associated subqmtems.

    7. Detailed requircments for Bonding and Shielding are contained in 5.2 and 5.3.

    8. This sbmdard is tier implemented by MIL-HDBK-419; Grwn&ng, Bonding, and Shielding fbr ElectronicFacilities and ~pIIX!@L

    9. Notatkmsarwnotwuxiin th.isre visicmtoidcz@_~ withrqcRA totheprevious issucducto@Mextcnsivaless of the changes.

    ii

    ______ ....

  • MXL-STD-188-124B

    CONTENTS

    1.

    1.11.21.31.41.5

    2.2.12.1.12.1.22.22.32.4

    3.

    4.4.14.24.2.14.2.24.2.34.34.4

    5.5.15.1.15.1.1.15.1.1.1.15.1.1.1.25.1.1.1.3.5.1.1 .1.3.15.1.1 .1.3.25.1.1.1.45.1.1.1.55.1.1.1.65.1.1.1.75.1.1.25.1.1.2.15.1.1.2.25.1.1.2.35.1.1.2.4

    SCOPE . . . . . . . . . . . . . . . . . . ...+....0=oOOOCOOCO. .****

    -* *~ ** . * w -b--t....*.*...*...*.*** ******=**** ~li~om . . . . .. a . . . . . . . . . . .6...0000OSOOO00*0000 Obj=tiv= . .. t . . . . . . . . . . ...*.~~c~oo-.o System S~mdHpObjAv= . . . . . . . . . . . . . . . . . . . . . . . . . . .

    REFERENCED D-ENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Governmm tDocummt8 . . . . . . . . ...*.... ***=****Spocificatiom, StaxKkk and Hmdbocb . . . . . . . . .****...* ********Other Govcrnmm Doulmen ts, Drawing8, aQdPublicatiml. *****..*******OtherPubi.ications ...*......*.. *************** Source of Docummts ..*....**...**=** ** ** * * SofderofPmAcnce . . . ...*.*.. *.************

    DEFINITIONS . . . . . . . . . . . . . .....~.e-- ~~q

    GENERALREQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .General . . . . . . . . . . . . . . . . . . . - . . . . . + ..=+.. +-+.?Grounding . . . .. * . . . . . . . . . . . ...00 ..+.00w*=~o-o.=0~0= (3eacral . . . . . . . . ...*... . * . * * * . * * - * *.- ...Tacticad Equipmen@md Fwtiti= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Grounding inAmticRegim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bonding . . . . . . . . . . . . . . . . . . ** ** .* *$ * * * * G* ..... ..shielding . . . . . . . . . . . . . . . . . ** . .. O***** .

    DETAILED REQ~MENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Growding . . . . . . . . . . . . . . . . . . . . . . . . . .O. *00 .. SGQOOOOOO.BuikiingandStmature. . . . . . . .........~..t...~ .0 .0*.*Eutb El@rodeSub~tim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .General . . . . . . . . . . . . . . . . . .....+....oo=D.D...s w~oEarth Rcsistivity Swey . . . ..G6 . . . . . . .. e.. .eg$. .eg$ .$

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    iv

  • MIL-STIH88-124Bu

    CONTENTS (cont)

    bL..-

    1

    I!mm!d25.1.2.1.1.25.1.2 .1.1.35.1.2 .1.1.45.1.2.25.1.2.2.15.1.2.2.25.1.2.2.35.1.2.2.45.1.2.2.55.1.2.2.65.25.2.15.2.25.2.35.2.3.15.2.3.25.2.3.35.2.3.3.15.2.45.2.55.2.5.15.2.5.25.2.5.35.2.5.45.2.65.2.6.15.2.6.25.2.6.35.2.6.45.2.6.4.15.2.6.4.25.2.6.55.2.6.65.2.75.2.85.2.8.15.2.8.25.2.8.35.2.8.45.2.8.4.15.2.8,4.25.2.8.55.2.95.2.9.1

    Equipment Si@G-d T~w . . . . . . . . . . . . . . . . . . . . . . . . . . . .Shield Terrnina tionsof Coaxkland Other Highti Fq_cy Cabk . . . . . . . . . .Overall Shields m.. o. O. O..... . . . .. . O O BD=OOOOOOOQ=FaultProte@ion Subsy*m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G- . . . . . . . . . . . . . . . . . . . ....00s0ooooQo=DosoQ.0 ~+Pemonnclprotection . . . . . . . . . . . . . . .. 0. .0 .$9. 0 OOOQ o-oACPowerNe@d . . . . . . . . . ..= ~ooowo OO O O CCOSOOWIndividualPowarIineFilters.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .convcOicweoutl* . .*.*.****.****** PortableEqtipmt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bonding . . . . . * . . . . . . . . . . . . . *****.**** General . . . . . . . . . . . . . . . . . . .* *4 * *$** .Surfkce PlatigsorT-t~@. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BondProt.ection . . . . . . . . . . . . . .. +. .. OOOO OO*O o.......Corrosion Protection . . . . . . . . . .. Oc. c*. Ob*OODo. O bee.....=Compression BOndSinPIO@h . . . . . . . . . . . . . . . . . . . . . . . . . . . .Vibration . . . . . . . . . . . . . . . .=...OOCOO*OO*O+CCO.O ...****Bmdirlgstraps . * . . * . . ...**..* * . * * . . * * * . . * . ...... Bond R-itice . . . . . . . . . . . --..+......... 0~.0+.00Material . . . . . . . . . . . . . . . . . ..~OOOO=OOOO*OOOO. 00~*Sweat Solder . . . . . . . . . . . . . . ....~.....~~...~. +..Brazing Solder . . . . . . . . . . . . . . . . . . . . . . . . . . .....-. -o.....clamps . . . . . .

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