r,o,e:
D
I2
-
paCCTO~HV1e Me>K,o,y nepBblM 111BTOPblM npOBO,o,OM;
D2} -
paCCTO~HV1e Me>K,o,y BTOPblM 111TpeTbV1M npOBO,o,OM;
D
J1
-
paCCT051HV1e Me)K,lJ,y TpeTbV1M V1nepBblM npOBO,o,OM.
3TV1 BenW-lV1Hbl onpe,o,en~IOTC~ no 4epTe>KaM onop.
npV1 BblnonHeHV1111 npIl16nV1>KeHHbIX paC4eTOB MO>KHO nonb30BaTbC~
cpe,o,HV1M 3Ha4eHV1eM y,o,enbHoro V1H,o,YKTV1BHoro conpOTV1BneHV151
,o,n~
Bn-O,4KB, paBHblM 0,3 OM/KM.
,o,} VlH,o,yKTV1BHoe conpOTV1BneHV1e CTanbHblX npoBo,o,oB COCTOV1T 1113,o,ByX
COCTaBn~IOw,V1X - BHyTpeHHero V1BHeWHero.
BHyTpeHHee V1H,o,YKTV1BHoeconpOTV1BneHV1e 3aBV1CV1TOT BenV14V1Hbl TOKa,
npoTeKalOw,ero no npOBO,o,y. 3aBV1CII1MOCTb :,lTa CnO>KHa~, MaTeMaTV14ec-
KOMy pac4eTy He no,o,,o,aeTC~ V1onpe,o,en~eTC~ no onblTHblM ,o,aHHbIM, KaK V1
,o,n~
aKTV1BHoro conpOTV1BneHV1~.
BHeWHee V1H,o,YKTV1BHoeconpOTV1BneHV1e He 3aBV1CV1T OT 3Ha4eHV1~ TOKa
V1onpe,o,en~eTC~ TaK>Ke, KaK V1
,o,n~
npOBo,o,OB 1113L1,BeTHbIX MeTannOB. PeKO-
MeH,o,yeTc51 nonb30BaTbC~ cnpaB04HblMV1 MaTepV1anaMV1, B KOTOpblX npV1-
Be,o,eHbl Ta6nV1L1,bl
V1nV1
KpV1Bble 3aBV1CV1MOCTII1 conpOTV1BneHV1~ OT ce4eHV1~
npOBOAa V1cpeAHero pac4eTHoro reOMeTpV14ecKoro paCCT051HII15'l Me>KAY
npOBOAaMV1.
PaC4eT TOKa K.3. Ha nV1HV15'lXco CTanbHblMV1 npOBo,o,aMV1 BblnOnH5'leTC5'l
MeTOAOM rlOcneAOBaTenbHblX npV16nV1>KeHV1Vt. npeABapV1TenbHO 3a,o,alOT-
C5'l O>KV1,o,aeMbIM TOKOM, An5'l 3TOro 3Ha4eHII1e onpeAen5'lIOT aKTV1BHble V1
BHyTpeHHV1e V1HAYKTV1BHble con pOTV1BneHV15'l npOBOAOB, no
D
cp
onpeAen5'l-
eTC5'l BHeWHee V1HAYKTV1BHoe conpOTV1BneHV1e, V1no 3TV1M AaHHblM pac-
C4V1TbIBaIOT TOK K.3.
nony4eHHoe 3Ha4eHV1e TOKa cpaBHV1BalOT co 3Ha'-leHV1eM, An5'l KOTOpO-
ro onpeAen5'lnV1Cb conpOTV1BneHV1~. EcnV1 pa3HV1L1,a He npeBblwaeT 5-1 0%,
pac4eT 3aKaH4V1BaeTC5'l. EcnV1 pa3HV1L1,a BenV1Ka, TO paC4eT nOBTOp5'leTC5'l,
npV1'-1eM conpOTV1BneHV1~ onpeAen5'lIOT An51 HOBOro 3Ha'-leHV1~ TOKa, nony-
4eHHoe npV1 nepBOM paC'-IeTe. TaK nocTynalOT ,0,0 Tex nop, nOKa pe3ynbTa-
Tbl cOBnaAyT C T04HOCTbIO ,0,05-1 0% 3Ha'-leHV1~ TOKOB.
e) VlHAYKTV1BHble COnpOTII1BneHV1~ Ka6eneVt paCC'-IV1TbIBaIOTC~ TPYAHO,
TaK KaK KOHCTpyKLI,V1V1 V1Xpa3nV1'-1Hbl. n03TOMY aKTV1BHble V1V1HAYKTV1BHble
conpOTV1BneHV1~ Ka6eneVt cneAyeT 6paTb no CnpaBO'-lHV1KaM. ,lJ,n5'l npIl16nV1-
>KeHHbIX Bbl'-lV1CneHV1Vt MO>KHO npV1HV1MaTb V1HAYKTV1BHoe conpoTV1BneHV1e
Ka6eneVt O,4KB C ce4eHV1eM 16-240 MM
2
,
paBHblM 0,06 OM/KM.