智能化工程技术交底.pdfVIP

智能化工程技术交底

XXXDisclosure

ChapterOne:XXX

Duringthelayingofpipelines。thereshouldbenowrinkles。

dentsorcracksatthebendsofthepipes。Thedegreeofbending

shouldnotexceed1/10oftheouterdiameterofthepipe。andthe

bendingradiusshouldnotbelessthan6timestheouterdiameter

ofthepipe。Thepipeopeningattheentrypointofthebox。or

bridgeshouldbeflatandfreeofburrs。Theexposedpipeopening

intheboxshouldbelessthan5mm。fixedwithalocknut。and

thegroundingshouldbewell-connected。Theexposedthreadof

thelocknutshouldbe2-4turns。andthereshouldbeoneholefor

eachpipe。withthesizeoftheholematchingthediameterofthe

pipe。Thepipelinenshouldbecleanandbeautiful。andthe

electricalnshouldbefirmandtight.

1)Whenthelengthofthepipelineexceedsthefollowing

lengths。waterproofandtnboxesshouldbeadded:30mwithout

bends。20mwithonebend。15mwithtwobends。and8mwith

threebends。Ifitisnotpossibletoaddanbox。thediameterof

thepipeshouldbeXXXsize.

2)XXX.

3)ThewiringofweakcurrentsystemsXXX。butauxiliary

powersupplycircuitswithvoltagesgreaterthan65Vshouldbe

XXXforvideosignallinesandpowerlines。thereshouldbegood

XXXinterference.

4)WhenthelengthofthevideoXXXneeded。aspecial

dockingjointshouldbeusedforn。Theshieldinglayerofthe

shieldingwireshouldbereliablygroundedwiththeupperand

lowercomputers。andthegroundingresistanceshouldbe≤4Ω.

5)Whenconnectingequipment。XXXtotheterminal。The

fixingoftheswitchmustbestableandfirm。andtheheightmust

beaccordingtothespecifiedstandard。XXX.

6)Whenlayingcables。theymustbeXXX。Duringthe

releaseprocess。thecablemustnotbeloopedortwistedinto

waves。Ifajointisneededinthemiddleofthevideocable。a

specialcableheadconnectorsh