船舶雷达和导航设备insulateoneselffrom使隔离…depriveof失去南通理工学院anyLogo1.1ElectricalHazardsandPrecautionMarineelectricalhazards:ElectricalshockArc-flashArc-blastvoltage//电压moisture//潮湿electricshock//触电electricalfire//电气着火electricalhazards//电气危害Arc-flash//电弧灼伤Arc-blast//电弧击伤Allthesethreethingswillcausepersonnelinjury,whilethelattertwowillalsocauseelectricalfire.Thus,weneedtoknowhowtopreventfrombeingelectricshockedandbreakingoutofelectricalfire南通理工学院anyLogo1.1.eincontactwithenergizedconductorstheyreceiveashockwithcurrentflowingthroughtheirskin,ans.urrenttravelsthroughbody:?•Touchpotential?•Steppotential?•Touch/Steppotential50mA--thesafetycurrent36V--thesafetyvoltage12V–theabsolutesafetyvoltagecurrentintensity//电流强度threshold//临界值resistance//阻力ohm//电阻humidorfoggysituation潮湿有雾的环境energizedconductor//通电导体南通理工学院