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7/23/2019 Damh Trang Bị Điện
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[ĐAMH:CẦN TRỤC THÁP
TRƯỜNG CAO ĐẲNG CÔNG NGHIỆP NAM ĐỊNH
KHOA: ĐIỆN – ĐIỆN TỬ
BỘ MÔN TRANG BỊ ĐIỆN
ĐỒ ÁN MÔN HỌC
Máy nâng vận chy!n
Đ" #$%&Th%'# (' c)n #*+c #há, -ây ./ng
Giáo viên HD: ĐẶNG THÀNH TRUNGS !"#$ "i%n: NGU&'N (U)N Đ*I
+ H,I Đ-NG
./ -N ĐÔNG
0AO -N HANH
HÀ -N NH1T
.23: ĐIỆN 0ÔNG NGHIỆ3 0Đ45Đ67
NAM ĐỊNH 8 974
M+c 0+c
7/23/2019 Damh Trang Bị Điện
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[ĐAMH:CẦN TRỤC THÁP
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0HCNG 7: GI2I THIỆU TNG EUAN F<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
0HCNG 9:TRANG BỊ ĐIỆN –ĐIỆN TỬ 0U TR;0
0HCNG :()& DJNG MÔ HNH THJ0 NGHIỆM<
.LI NI ĐU
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[ĐAMH:CẦN TRỤC THÁP
Hi%n n "@ "P! $á$ nQn" in" !P $ VWn ?X YZ V[nQ nQ $nQ n"iX \á
]W V#nQ ^?_$ `i%! a $á$ nQn" Qio !"bnQ vcn !di ^]W V#nQ ^!"e afi<Má ]W
V#nQ "i%n $> g nh$ ! jk! ? VlnQ vX $"enQ aoli^m"onQ m" vX \ \p $e n"iX
nh$ !jên !"P Qii<TjonQ $á$ aoli \á ]W V#nQ "i%n n \á nWnQ8vcn $"qn
$"iP\ \r! !s a% an v ?hf$ tnQ V[nQ !jonQ n"iX aun" v#$<Mr! !jonQ n"nQ ê
$@ $@n !"iP! $e \r! nQh=i Yin" viên a m"di "iq jw ?hf$ nQên ax $k !lo $e
$á$ !"iP! `y \á $znQ n"h $á$ $"i !iP! $k !lo nên `r \á ?><Đq n{\ vnQ ?hf$ a|
!"P! v !"#$ "n" !"} nQh=i Yin" viên m"di "on !"n" !! ?~ án \bn "•$<
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CHƯ1NG 2& T3NG 45AN 67 C8N TR9C THÁP
2:2:;há% <á# chng v" c)n #*+c #há,
2:2:2:K"ái ni%\0@n !j[$ !"ám a aoli \á !j[$ $> $r! !"ám $o^ ?sn" !"ám a{m $@n Vi^ ?hf$ !onv€nQ^Vn ?rnQ ?i%n ?r$ acm^nQ~n ?i%n YZ V[nQ ! \lnQ ?i%n $bnQ nQ"i%m^n>?hf$ YZ V[nQ jrnQ jpi !jonQ ]W V#nQ n" $o !@nQ^]W V#nQ $bnQ nQ"i%m^a{m jám!"iP! `y !jên $o<
2:2:=:3"Wn aoli <
8T"‚o ?_$ !xn" !" ?ƒi !@\ vi $"i !"n":
„ 0@n !j[$ !"ám !" ?ƒi !@\ vi Q>$ nQ"iênQ $@n<
„ 0@n !j[$ !"ám !" ?ƒi !@\ vi `…nQ ]‚ $on \nQ "nQ<
8T"‚o VlnQ P! $k $e `r m"cn :
„ 0@n !j[$ $> !"ám <
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„ 0@n !j[$ $> $@n <
8T"‚o ê $@ YZ V[nQ:
„ 0@n !j[$ !"ám ?_! $ ?yn"<
„ 0@n !j[$ !"ám Vi ?rnQ<
8T"‚o "d n†nQ a{m V_! nQoi $bnQ !jh=nQ:
„ 0@n !j[$ !"ám !# VWnQ<
„ 0@n !j[$ !"ám !# a‚o<
2:2:>:0á$ $‡ $k "ol! ?rnQ $e $@n !j[$ !"ám
0á$ $‡ $k !"h=nQ Q_m Qim $@n !j[$ !"ám $> !"q vcn $"qn "nQ !jonQ vˆnQ a\vi%$ a "}n" !j[ ]Pn `o Q~\ :
– 0‡ $k nWnQ "l vc!
– 0‡ $k Vi $"qn ]‚ $on ?q !" ?ƒi !@\ vi
– 0‡ $k
NQoi j^ !‰ !"‚o aoli $@n !j[$ !"ám $€n $> !"q $> $á$ $‡ $k "á$ n"h:
– Di $"qn
– NWnQ "l $@n
– Di $"qn ?i !j•nQ
– T" ?ƒi $"iX $o !"Wn !"ám
0‡ $k !jhf! nWnQ !"ám :
Đq !jhf! nWnQ !"ám aên $o nQh=i ! VˆnQ ]i an" !"Š a#$^ "% !=i m a†nQ $ám "o_$!jXn ?rnQ `án" j†nQ !"n" j†nQ<
0á$" !" ?ƒi ?r $o $e $@n !j[$ !"ám:
Đq m"[$ v[ $bnQ !j}n"^ !"Wn !"ám $@n ?hf$ ni Vi !"‚o $"iX $o $e $bnQ !j}n"^"i !"áo V‹ m"di !"áo V@n $á$ ?oln !"Wn !"ám<
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0> n"iX $á$" !" ?ƒi ?r $o n"h:
– Ni Vi ! ?sn" !"ám:
Bi%n m"ám n !"h=nQ ?hf$ VˆnQ g $@n !j[$ !"ám $> ?@ !"ám ^ ?hf$ !"#$ "i%n
g !jên $o nên "bnQ n !on^ jk! nQ "iq\ $"o $bnQ n"Wn^ dn" "hgnQ ?Pn !iPn ?rv} m"di VnQ ali ?q !"#$ "i%n !†nQ ?r $o<
– Ni Vi ! $"Wn !"ám
– Ni Vi ! Qi !"ám
– 0@n !j[$ !"ám !"i $bnQ $á$ !o n" $o "nQ !j†\ !@nQ^ nQh=i ! VˆnQ $á$" a‚oYn<
2:2:? .h | "i YZ V[nQ $@n !j[$ !"ám
– Do $@n !j[$ !"ám $> ?r$ $o an^ x$" !"h$ $~nQ Xn" nên n"k! !"iP! m"di !xn"!oán ?r ƒn ?yn" v ]Z a| nXn \>nQ !jh$ "i a{m ?_!^ m"di !xn" ?Pn m"h‡nQ án !"áoV‹ "i "on !"n" $bnQ !j}n" !ján" vhnQ vo $á$ $bnQ !j}n" `ên $ln"<
– TjonQ "i !"i $bnQ \ Q_m m"di Qi> `po !"} m"di "l $@n v $bnQ
– ]on^ "l !"km ?r $o^ n‚o Qi $"{$ $"{n vo $bnQ !j}n"<
– 0"s nên VˆnQ $"o $bnQ !j}n" $> ?r $o an^ "i ahfnQ $bnQ vi%$ an^ !"=i Qin!"i $bnQ ! Œ !"ánQ !jg aên v} YZ V[nQ $@n !j[$ !"ám $> $"i m"x `n ?@ an^ \k!n"iX !"=i Qin $"o "W a{m V#nQ v !"áo V‹ <
2:=:Gii !"i% vX $@n !j[$ !"ám
2:=:2:0k !lo<
0@n !j[$ !"ám a aoli $@n !iê `iq ?hf$ YZ V[nQ jrnQ jpi !jonQ ]W V#nQ n" $o!@nQ^]W V#nQ $bnQ nQ"i%m v a{m jám $á$ \á \>$ !"iP! `y !jên $o<0"nQ $> ?_$
?iq\ a $r! !"ám $o^?sn" !"ám a{m $@n Vi ?hf$ !on v€nQ $á$ `r \á !"h=nQ?hf$ Vn ?rnQ ?i%n ?r$ acm VˆnQ \lnQ ?i%n $bnQ nQ"i%m<
0@n !j[$ !"ám !"h=nQ $> ?e $á$ `r \á n"h \á nWnQ "l "nQ^!" ?ƒi !@\ vi^`r\á ^ r \á Vi $"qn v} vc $"nQ $> !"q vcn $"qn "nQ "> !jonQ \r!
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"bnQ Qin jrnQ an <M_! "á$ P! $k $e $"nQ "fm ax nên V VnQ !"áo a{m vcn$"qn ! n‡i n ?Žn n‡i "á$<
Sơ đồ cấu tạo của cần trục tháp.
Hình 1.2:Cấu tạo chung của cầntrục tháp
T"‚o m"h‡nQ m"ám a{m ?_!
!li "i%n !jh=nQ $> !"q $"i j:+ 0@n !j[$ !"ám Vi $"qn !jên j+ 0@n !j[$ !"ám $ ?yn"+ 0@n !j[$ !"ám !# nWnQ+ 0@n !j[$ !"ám T"‚o ?_$ ?iq\ a\ vi%$ $e $@n !j[$:
+ 0@n !j[$ aoli !"ám "bnQ :Ton `r !"ám v $‡ $k ?_! !jên `n
<Bn V# !jên $á$ !"iP! `y !# ?_! !jên "nQ Vi $"qn+ 0@n !j[$ !"ám "bnQ :3"@n ?_! !jên ?@ !"ám "i !"}
$"s $> $@n ^?sn" !"ám^?i !j•nQ^v $á$ $‡ $k ?_! !jên ?>< T"‚o m"h‡nQ m"ám !" ?ƒi !@\ vi:
+ T" ?ƒi Q>$ nQ"iênQ $e $@n
+ Di $"qn ]‚ $on !jên j $e $@n<
H}n" dn" \in" "•
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2:=:=<NQên ax a\ vi%$80@n !j[$ !"ám $> $r! !"ám $ ?yn" $@n n…\ nQnQ^!" ?ƒi !@\ vi `…nQ ]‚ $on Vi$"qn !jên $@n n"= $[\ !=i !"bnQ ma g ?@ $@n^nWnQ "l $@n n"= vo nQ~n?rnQ a#$ ! ?rnQ $‡ $e $[\ !=i !"onQ ma ?_! !jên ]‚ $on v ma \>$ $W
K"i $@n nWnQ $o $"iX $o $e $r! !"ám^YZ V[nQ ?! !"ám<
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2:=:>:N†nQ Yk! v `i%n m"ám nWnQ $o n†nQ Yk!:
E3600
T CK < E < K Q < K T‘"’
TjonQ ?>:
E – Tdi !j•nQ Vn" nQ"u $e "nQ nWnQ !kn ’
T CK T"=i Qin $" } 7 $bnQ !á$
K Q H% Y YZ V[nQ !di !j•nQ
K! H% Y YZ V[nQ !"=i Qin
T CK t iin
2:=:? Bi%n m"ám nWnQ $o n†nQ Yk!<
SZ V[nQ !"iP! `y \nQ "nQ !"x$" "fm vi ?_$ !xn" $e "nQ "><
KP! "fm !"o !á$ v v nWnQ "l
Đd\ `do \á !! !jonQ á !j}n" a\ vi%$
Tƒ $"t$ `pi ]Pm V‹ "nQ \r! $á$" "fm ax<
NWnQ "nQ m"ˆ "fm vi !di !j•nQ nWnQ Vn" nQ"u
NWnQ $o ! nQ"X $e $bnQ n"Wn<
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CHƯ1NG II&@ TH5BT C8N TR9C THÁP
=:2&NHDNG ĐEC ĐIFM C1 N CA HỆ TR5B7N ĐJNG 6K TRANGỊ ĐIỆN C85 TR9C
0"P ?r a\ vi%$ $e $á$ $‡ $k $@n !j[$ ?hf$ ]á$ ?yn" ! $á$ ê $@ $e á!jj}n" $bnQ nQ"%^ $"t$ n†nQ $e $@n !j[$ !jonQ VW $"Xn Ydn ]k!< 0k !lo vP! $k $e $@n !j[$ jk! ? VlnQ < K"i !"iP! P v $"P !lo "% !"nQ ?iX "iqn v "%!jXn ?rnQ ?i%n m"di m"ˆ "fm vi !nQ aoli $[ !"q<
0@ !j[$ !jonQ m"Wn ]hgnQ a%n !"Žm M$!n" ^ !jonQ $á$ m"Wn ]hgnQ n"i%!a%n m"di ?d\ `do $á$ $"s !iê u !"c! !jonQ $"P ?r á ?r <0@ !j[$ !jonQ $á$
m"Wn ]hgnQ a{m jám m"di ?d\ `do á !j}n" \g \á ê\ ^ Vdi ?iX $"sn" !$ ?rjrnQ^ VnQ $"xn" ]á$ ?nQ n‡i ak "nQ v "l "nQ v<v<<
0á$ $‡ $k $@n !j[$ a\ vi%$ !jonQ $"P ?r $#$ } n_nQ nX: !@n Y ?>nQ ${! an^$"P ?r á ?r ]d j n"n" "i \g \á ^ "p\ v ?do $"iX<
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T n"nQ ?_$ ?iq\ !jên ^ $> !"q ?h j n"nQ ê $@ $‡ dn ?i vi "% !jXn?rnQ v !jnQ `y ?i%n $"o $á$ $‡ $k $@n !j[$:
78 S‡ ?~ $k !j$ "% ?iX "iqn !# ?rnQ ?‡n Qidn <98 0á$ m"@n !Z $k !"n" $> ?r !in $c $o ^ ?‡n Qidn vX $k !lo !" !"P V VnQ <8 TjonQ Y‡ ?~ ?iX "iqn m"di $> \l$" `do v% ?i%n ám “"bnQ” ^ á !di v nQ{n
\l$" <58 E !j}n" \g \á Vin j !"‚o 7 ac! ?hf$ ?yn" Yn <48 S‡ ?~ ?iX "iqn $"o !nQ ?rnQ $‡ jii‚nQ `i%! ^ ?r$ acm <Œ8 0> $bnQ !{$ "n" !j}n" !j}n" "ln $"P "n" !j}n" !iPn aˆi ^ $"o ]‚ $@^ ]‚ $on
"ln $"P "n" !j}n" aên $e $‡ $k nWnQ 8"l <—8 Đd\ `do "i "nQ g !$ ?r !"km <˜8 T# ?rnQ $k! nQ~n $km "i $> nQh=i a\ vi%$ !jên ]‚ $@ <
=:= TLNH CHỌN CÁC PH8N T TRONG HỆ TR5B7N ĐJNG ĐIỆN
6K TRANG Ị ĐIỆN C85 TR9C
2: Tnh chn cng Q# Sng cU
VWĐng cU #*y"n Sng cU c nângXhY
ĐrnQ $‡ !jXn ?rnQ $‡ $k nWnQ8"l Qi vi !j€ n !j•nQ !jonQ $á$\á nWnQ – vcn $"qn n>i $"nQ v !jonQ $@ !j[$ n>i jiênQ< ĐrnQ $‡!jXn ?rnQ nWnQ8"l a\ vi%$ g $"P ?r nQ{n "ln a_m ali ^ nên "i $"•n
$bnQ Yk! ?rnQ $‡ m"di !xn" ?Pn m"[ !di ?rnQ<™’Tính toán phụ tải tĩnh. 3"[ !di !un" $e $‡ $k nWnQ8"l $"e P a Vo !di!j•nQ P! ?yn"< Đq ]á$ ?yn" m"[ !di !un" ^ m"di V# vo Y‡ ?~ ?rnQ "•$$e $‡ $k nWnQ8"l $[ !"q< Gs YZ $> Y‡ ?~ ?rnQ "•$ n"h "}n" 9<7 <
2
37
4
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H}n" 9<7 S‡ ?~ ?rnQ "•$ $e $‡ $k nWnQ "l
7 – Tj[$ vx! 9 – Bán" vx! – TjXn ?rnQ án" j†nQ
5 – TnQ nWnQ 4 – r m"cn \>$ "nQ
Œ 8 M>$ — – ĐrnQ $‡ A – Điq\ Y ?yn" $ám
8 3"[ !di !un" "i nWnQ á !di:
M n (G+G0) Rt
ui❑c ^ šN\›
TjonQ ?> :
G8!j•nQ ahfnQ $e !di !j•nQ šN›
GO – !j•nQ ahfnQ $e `r ak !di šN›
R ! – `án xn" $e !nQ nWnQ ^ š\›<
8 `ri Y $e "% !"nQ j€nQ j•$ <
η$ – "i% Yk! $e $‡ $k<
i8 Ts Y !jXn
F cáp
A
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i 2 π R t .n
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TjonQ ?> : v8!$ ?r nWnQ !di ^ š\‘Y›
n 8 !$ ?r $e ?rnQ $‡ ^ švQ‘Y›
TjonQ $á$ $bnQ !"t$ !xn" !jên ^ "i% Yk! η$ ak `…nQ ?yn" \t$ "i
!di !j•nQ `…nQ ?yn" \t$ < œnQ vi $á$ !di !j•nQ "á$ ?yn" \t$ ^
$@n ]á$ ?yn" η$ !"‚o !di !j•nQ n"h "}n" 9<9
(á$ ?yn" η$ V# !"‚o "% Y \nQ !di :
K Pt
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8 3"[ !di !un" nWnQ !di "bnQ $@n !di:
Mno G
0 Rt
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8 3"[ !di !un" "i "l !di
0> !"q $> "i $"P ?r "l !di : "l ?rnQ a#$ v "l "p\<Hl ?rnQ a#$!"#$ "i%n "i !di !j•nQ n" < "i ?> \b\‚n Vo !di !j•nQ QW j"bnQ ?e ?q !"{nQ \b\‚n \ Yá! !jonQ $‡ $k < Má ?i%n a\ vi%$g ?rnQ $‡ <
Hl "p\ !"#$ "i%n "i !di !j•nQ an< "i ?> \b\‚n Vo !di !j•nQ QWj jk! an < Má ?i%n m"di a\ vi%$ g $"P ?r "p\ ?q !di !j•nQ ?hf$"l vi !$ ?r ƒn ?yn"<
Đq ]á$ ?yn" \b\‚n !jên !j[$ $e ?•nQ $‡ "i "l !di $@n !"#$"i%n vi m"Žm `iPn ?ƒi Y:
G•i \b\‚n !jên !j[$ ?rnQ $‡ Vo !di !j•nQ QW j "bnQ $> !ƒn !"k!a M! !"} :
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M! (G0+G) Rt
u .i ^ šN\›
K"i "l !di ^ n†nQ ahfnQ !jXn ! m"x !di !j•nQ YnQ $‡ $k !jXn
?rnQ ^ nên :
M" M! 8 ∆M M! <η" ^ šN\›
TjonQ ?> : M" 8 \b\‚n !jên !j[$ ?rnQ "i "l !di šN\›
∆M – !ƒn !"k! \b\‚n !jonQ $‡ $k !jXn ?rnQ^ šN\›
η" – "i% Yk! $e $‡ $k "i "l !di<
NP M! > ∆M 8 "l "p\^ M! < ∆M 8 "l ?rnQ a#$<0oi !ƒn !"k! !jonQ $‡ $k nWnQ 8 "l "i nWnQ !di v "i "l !di n"hn" ^!"} :
∆M M t
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1
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¿
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M" M t −¿ M t 1❑C
−1¿ M t (2− 1❑C )
(G0+G) Rt
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So Yán" "i `iq !"t$ 984’ v 98—’ ! $> :
η" (2− 1
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Đi vi n"nQ !di !j•nQ !h‡nQ ?ian η$ > ^4’ ! $> η" > ^
M" > < ĐiX ?> $> nQ"u a \b\‚n ?rnQ $‡ nQhf$ $"iX vi
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\b\‚n m"[ !di < ĐrnQ $‡ a\ vi%$ g $"P ?r "l "p\< K"i !di !j•nQ
!h‡nQ ?i n" η$ < ^4 ’ ! $> η" < ^ M" < ^ \b\‚n ?rnQ $‡
$ˆnQ $"iX vi \b\‚n m"[ !di < ?rnQ $‡ a\ vi%$ g $"P ?r "l?rnQ a#$<
™’ Tính toán hệ s ti!t "iện t#$ng %i &'n T() < 0" } a\ vi%$$e $‡ $k nWnQ 8 "l `o Q~\ $á$ Qii ?oln Y : "l "bnQ !di ^nWnQ !di ^ "l !di v nWnQ "bnQ !di Qi $á$ Qii ?oln !"h=nQ $>!"=i Qin nQ"s’<
K"i !xn" !oán "% Y !iP! Vi%n !h‡nQ ?i ^ $"nQ ! !"=i Qin"p\ \á v \g \á <
T"=i Qin !on `r 7 $" } a\ vi%$ $e $‡ $k nWnQ – "l $> !"q!xn" ?hf$ !"‚o n†nQ Yk! E v !di !j•nQ ?yn" \t$ G?\
T$ 3600Gđm
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TĐž T lv
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Ch*n s$ +, c-ng suất %,ng c$ :$"•n Y‡ `r $bnQ Yk! ?rnQ $‡ $> !"q
!"‚o m"[ !di !jnQ `}n" M tb , "o_$ !"‚o m"[ !di ?ŸnQ !jy M đt P!
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M tb=k
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M đt =√∑i=1
n
M i2
t i
T ck
TjonQ ?> : M i – Tjy Y \o\‚n tnQ vi "odnQ !"=i Qin T i
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!@n Y \g \á "p\ \á
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M đmDC ≥ M đt
Kiq\ nQ"i%\
Đq iq\ nQ"i%\ $bnQ Yk! ?rnQ $‡ ?p $"•n^$@n m"di ]W V#nQ `iq ?€ m"[ !di$"xn" ]á$<S "i ?p ]Ž! ?Pn !"=i Qin \g \á ^"p\ \á v !"=i Qin nQ"s $e?rnQ $‡^!xn" ali !"=i Qin !iPm ?i%n !h‡nQ ?i !"#$<
TĐ th=
∑ t i+∑ t ih+∑ t imm
T ck
TjonQ ?>: ∑ t i !ƒnQ !"=i Qin a\ vi%$
∑ t ih !ƒnQ !"=i Qin "p\
∑ t imm !ƒnQ !"=i Qin \g \á
!xn" m"[ !di $"xn" ]á$ !"‚o ?li ahfnQ ?ŸnQ !jy M đtcx
ĐrnQ $‡ ?p $"•n a ?nQ nP !" \pn ê $@:
M tc< M đmĐC
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M tc< M đtcx√ TĐth
TĐtc
TjonQ ?>: M tc a \o\‚n ?i vX "% Y !iPm ?i%n !iê $"n
TĐtc "% Y !iPm ?i%n !iê $"n:74 ,25 ,40 , 60 .
ChZ [&
„’ Đi vi ?rnQ $‡ ?i%n \r! $"iX x$" ! ?r$ acm "i "bnQ ?iX $"sn" ! !"bnQ^?q iq\ nQ"i%\ $bnQ Yk! ?rnQ $‡ ^$> !"q YZ V[nQ m"h‡nQ m"ám !ƒn !"k! !jnQ
`}n" " V€nQ ?i%n ^ $bnQ Yk! "o†$ \b\‚\ ?ŸnQ !jy<
Đi vi ?rnQ $‡ \r! $"iX x$" ! ni !iPm ^ nên YZ V[nQ m"h‡nQ m"ám !ƒn !"k!!jnQ `}n" v V€nQ ?i%n ?ŸnQ !jy
Đi vi ?rnQ $‡ "bnQ ?~nQ `r^m"h‡nQ m"ám !ƒn !"k! !jnQ `}n" v V€nQ ?i%n?ŸnQ !jy $"o P! d $"xn" ]á$ "‡n vi $á$ m"h‡nQ m"ám "á$<
+’ Kiq\ !j !jy Y Qi !$ $e !nQ $‡ $k $e $@n !j[$<
T"‚o Yb ai% u !"c! v Y‡ ?~ ?@ VW $e ?rnQ $‡ ^ ]á$ ?yn" \o\‚n \g \á v\o\‚n "p\ \á $e ?rnQ $‡<
Đi vi ?rnQ $‡ "bnQ ?~nQ `r jo!oj a~nQ Y>$ ^ $> !"q ak !jy Y !jnQ }n" "bnQ?ƒi $e \o\‚n !jonQ !"=i Qin "p\ v \g \á !"‚o `iq !"t$<
M!`\\ 1
2 M! „ M\\’
Đi vi ?rnQ $‡ ?i%n \r! $"iX \g \á `…nQ ?i%n !jg
TjonQ ?> :M! 8 \o\‚n !i "ln $e ?rnQ $‡< M\\ 8 \o\‚n \g \á<
M7 v M9 8 \o\‚n $#$ ?li v \o\‚n $"qn !iPm "i \g \á <
Gi !$ $e ?rnQ $‡ !xn" !"‚o $bnQ !"t$ :
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dω
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K"i "gi ?rnQ nWnQ !di v "l !di M$ > ^ "i "gi ?rnQ "l ?rnQ a#$ M$ < <
TjonQ á !j}n" "p\ $e ?rnQ $‡ ^ Vk $e M$ $znQ ?hf$ ]á< Đyn" !h‡nQ !# n"hvc !"‚o !h‡nQ n vX $"iX Qi M$ v \o\‚n ?rnQ $‡ < NP VˆnQ "p\ `…nQ$‡ "x ?rnQ $‡ ${! j "i nQ~n ?i%n ’ !"} !jy Y M!`\\ $e ?rnQ $‡ !" !"P
`…nQ M"$ $e r "p\ $‡ "x <
\W Tnh chn cng Q# Sng cU ch] các cU c .% chy!n #h^] ,h_Ungn`a ngVng
H}n" 98:S‡ ?~ a#$ $e $‡ $k Vi $"qn !"‚o m"h‡nQ n…\ nQnQ
x V[ ?n "}n" $"o $‡ $k Vi $"qn !"‚o m"h‡nQ n…\ nQnQ a $‡ $k ]‚ $@ v ]‚$on $e $@ !j[$ < S‡ ?~ a#$ ?hf$ Qii !"i% !jên "}n"
3"[ !di !un" $e $‡ $k a Vo a#$ $dn $"qn ?rnQ QW j < .#$ ?> `o Q~\ "i!"n" m"@n $"xn" : a#$ \ Yá! a†n !jên ?h=nQ ?i ¡7 v a#$ \ Yá! !jonQ $ƒ !j[$
`án" ]‚ ¡$! <
T"n" m"@n ¡7 ?hf$ ]á$ ?yn" !"‚o `iq !"t$ :
¡7 (G0+G)
Rb^šN›
TjonQ ?>:
Go 8!j•nQ ahfnQ `dn !"Wn $‡ $k ^ šN›
G 8 !j•nQ ahfnQ !di !j•nQ ^ šN›
R ` 8`án xn" `án" ]‚ ^š$\›
F
G +G0
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¡ – "% Y \ Yá! a†n ^ š$\›
NP `án" ]‚ `…nQ !"Žm a†n !jên ?h=nQ j !"} ¢ <4 ÷^7’ $\
T"n" m"@n a#$ ¡$! ?hf$ ]á$ ?yn" !"‚o `iq !"t$:
¡$! G „G’µ ^šN›
NP V=i ?iq\ ?_! $e a#$ n vX vn" án" ]‚ !"} !xn" !"‚o `iq !"t$:
¡£$! Go „G’ µ R ct
Rb ^ šN› <
TjonQ ?> : µ 8 a "% Y \ Yá! !jhf! : "i VˆnQ ƒ !jhf! µ ^4 ÷ <˜ ^ "i VˆnQ ƒ
`i µ^7÷^4<
R $! –`án xn" $ƒ !j[$ š$\›
Ton `r a#$ ?_! aên `án" ]‚ a :
¡$
1+ ct
! =(G0+G)
Rb " R ct + # ¿ ,[ $ ]
Đi vi $á$ $‡ $k $> `án" ]‚ Y{! a†n !jên ?h=nQ j ^m"di !xn" ?Pn a#$ $dn \ Yá!
Qi \Žm `án" ]‚ v ?h=nQ j <.#$ n ?hf$ !xn" !"‚\ …nQ "% Y V# !j ^v!on `r a#$ $dn !jonQ !jh=nQ "fm n Y¤ a
¡£$ < c=k (G0+G)
R b " Rct + # ¿ ,[ $ ]
H% Y ?hf$ ak ! !"#$ !P v in" nQ"i%\ vcn "n" <
í "ụ 8Đi vi ]‚ $@ "i VˆnQ ƒ `i 7^4 ÷ 9^ "i VˆnQ ƒ !jhf! : 9^4 ÷5<
Đi vi ]‚ $on^!h‡nQ tnQ a 7^94÷7^Œ v 9^4÷^9<
NP $‡ $k Vi $"qn !jên ?h=nQ V$ $> Q>$ nQ"iênQ α^!on `r a#$ $dn ¡n$ ?hf$
!xn" !"‚o `iq !"t$ :
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¡”$ (G0+G)
Rb
G¿
(¿0¿+G)sin% , [ $ ]% & ¿
" R ct + # ¿ cos¿
Đi vi $á$ $‡ $k a\ vi%$ nQoi !j=i ^$@n m"di !xn" !"‚\ a#$ $dn Qi>:
¡Q0'
( ) . v❑
2 +0.1) ,
2,[ $ ]
TjonQ ?> : 08 "% Y in" nQ"i%\ ^˜÷^¥’
γ 8!j•nQ ahfnQ jiênQ $e "bnQ "x ^ 79 N‘\’
Q8Vi%n !x$" $dn Qi>^š\9›
vΣ8 !$ ?r !ƒnQ $e $‡ $k v Qi> ^š\‘Y›<
0bnQ Yk! v \b\‚\ !jên !j[$ $e ?rnQ $‡ ?hf$ !xn" !"‚o `iq !"t$ Y :
3$ c . v
60.1000❑
, [ k* ]
M$ c . Rb
i . , [ $m ]
TjonQ ?> :8 3$^ M$ 8 $bnQ Yk! v \b\‚\ $dn !jên !j[$ ?rnQ $‡
8R ` – `án xn" `án" ]‚ ^š\›
8i – !s Y !jXn
8η 8"i% Yk! $e $‡ $k
8 v – !$ ?r Vi $"qn !"‚o m"h‡nQ nQnQ $e ]‚ ^š\‘m"›
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0"•n $bnQ Yk! ?rnQ $‡ ^iq\ nQ"i%\ $bnQ Yk! ?rnQ $‡ ?p $"•n !iPn "n" !"‚o$á$ `h$ n"h ?p nê !jên
Cb Th .+ #nh chn cng Q# Sng cU
T"x V[ 7 : (á$ ?yn" m"[ !di !un" "i nWnQ v "l $e $‡ $k nWnQ 8 "l g $@ !j[$ $"o `iP! : G?\ 9T η$ ^˜9 G 7T R ! ^5\ i —4 7
tnQ vi !di ?yn" \t$^1
2 ?yn" \t$ v "bnQ !di’<
8 Mb\‚\ !jên !j[$ ?rnQ $‡ "i nWnQ !di …nQ ?yn" \t$ :
Mn7
(G0+G) Rt
iu❑c
=(20+1 ) .0.4 .1000
75.1.0 .82=136,5 kGm+1340 $m
8 Mb\‚\ !jên !j[$ ?rnQ $‡"i "l vi !di `…nQ ?yn" \t$:
M"7 ( G
0+G ) R t
iu (2−
1
❑c
)=(20+1 ) .0.4.1000
75.1(2−
1
0,82)
8 K"i nWnQ !di !di !j•nQ …nQ
1
2 ?yn" \t$ ^ "i% Yk! !j !"‚o `iq ?~ g "}n" 989 a η ^—5Œ
Mn9 (20+1 ) .0.4.100075.1.0,746.1
=78,64 kGm+771 $m
8 K"i "l !di !j•nQ `…nQ1
2 ?yn" \t$:
M"9 (20+1 ) .0 .4.1000
75(2− 1
0,746)=38,6kGm+379,4 $m
8 Mb\‚\ nWnQ "i "bnQ !di ^ "i% Yk! η ^94˜< Tj !"‚o `iq
?~ g "}n" 989
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Mn G
0 Rt
i u =
1.0,4.1000
75.0,258 .1=20,67 kGm +202 $m
8 Mb\‚\ "l "bnQ !di :
M"
G0 Rt
iu (2−
1
❑)=
1.0,4 .1000
75.1
(2− 1
0,258
)=−9,96 kGm
Mb\‚\ "l "bnQ !di M" < $> nQ"u a $‡ $k a\ vi%$ g $"ê ?r "l
?rnQ a#$ <
Thí "ụ 2: Txn" $"•n$bnQ Yk! ?rnQ $‡ !jXn ?rnQ ]‚ $@ ?rnQ $‡ "bnQ ?~nQ `r jo!o VW kn ’ $"o `iP! : !j•nQ ahfnQ ]‚ $@ Go 7T !di !j•nQ ?yn" \t$ G?\
7T !$ ?r Vi $"qn v 55m
‘m" a#$ $dn $"qn ?rnQ "i !j•nQ !di
?yn" \t$ ¡$ Œ5˜N^ v "i !j•nQ !di ¡$o 95N^ "i% Yk! $e $‡ $k η ^˜4 !s Y !jXn i 7˜ ?h=nQ xn" `án" ]‚ D ^4 \ Mb\‚\ án !xn"$e $á$ `r m"cn $e $‡ $k ?ƒi vX !j[$ ?rnQ $‡ ¦7 ^74 G\9 !"=iQin VnQ ]‚ ?q !"áo !di !j•nQ !7 7Y !"=i Qin ak !di !9 74Y < Hp\ ?rnQ$‡ `…nQ $‡ $k m"n" $‡ "x $> Mb\‚\ m"n" M m" —˜^4 N\ < 0nQ ?h=nQVy$" $"qn !di !j•nQ 7 4\ <
8 T"=i Qin ]‚ $@ $"l "P! pnQ ?h=nQ :
!
1
=50.60
55
=55-
8 H% Y !iP! Vi%n !h‡nQ ?i :
TĐž 2 t .100
2 t + t 1+t 2
= 2.55.100
2.55+100+150=30
8 0bnQ Yk! !xn" !jên ?rnQ $‡ "i !di …nQ ?yn" \t$ :
3$ c . v
1000❑đm
= 6480.55
1000.0,85.60=6,98 k*
8 0bnQ Yk! $dn !sn" "i ]‚ $@ $"l "bnQ !di < T $> "i% Yk! η
^—˜ $ˆnQ vi !di `…nQ1
2 !"‚o ?~ !"y "}n" 989
3$ c/ . v
1000❑đ
= 3240.55
1000.0,78.60=3,8 k*
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NP $"•n $bnQ Yk! ?rnQ $‡ !"‚o $bnQ Yk! !jnQ `}n" !"} :
3?\ K P c t + P c/ t
2t =1,25
6,98+3,8
2=6,7 §
ĐrnQ $‡ $"P !lo "bnQ $> "% Y !iP! Vi%n $"n TĐž ž nên m"di ?ƒi vX ?rnQ $‡ $> TĐž 94ž
K"i ?> :
3£?\ Pđm √ TĐ th
TĐtC Œ^— √ 30
25=7,73 k*
8 T$ ?r $e ?rnQ $‡ !xn" ! ?$ ?r $e án" ]‚ :
nđ /c=nb. i= v .iπ Db
= 55.18
3,14.0,35=900 v(/ 0h
TjonQ ?> : n ` 8 !$ ?r $e `án" ]‚ švQ‘m"›
T"‚o Yƒ ! !j $t ! $"•n ?rnQ $‡ "bnQ ?~nQ `r jo!o VW kn iq MT8998Œvi $á$ !"bnQ Y u !"c! : U?\ ˜ TĐž 94 3?\ —^4 K¨ n?\
¥54vQ‘m" λM 9^˜ ¦ ^9Œ G\<
=: Tnh #]án v$ chn cU c ,hVnh ha
3"n" "p\ a \r! `r m"cn "bnQ !"q !"iP !jonQ $á$ $‡ $k $"xn" $e $@!j[$ < 3"n" VˆnQ !jonQ $k !"h=nQ $> aoli : m"n" Q$ ^ m"n" ?i v
m"n" ?u < NQên ax "ol! ?rnQ $e $á$ aoi© m"n" n>i !jên vX $‡ `dn aQinQ n" < K"i ?rnQ $‡ $e $‡ $k ?>nQ vo ahi ?i%n !"} ?~nQ !"=i $rnVW $e n\ $"W\ m"n" "p\ $znQ $> ?i%n< .#$ "! $d n\ $"W\ !"{nQa#$ $dn $e a€ ]o ^ Qidi m">nQ !j[$ ?rnQ $‡ ?q ?rnQ $‡ a\ vi%$ < K"i ${!?i%n ^ $rn VW n\ $"W\ $znQ \k! ?i%n ^ a#$ $†nQ $e a€ ]o Y¤ Žm $"_! \á
m"n" vo !j[$ ?rnQ $‡ ^ ?q "p\<
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3"n" "p\ ?i%n ! !"h=nQ ?hf$$"P !lo !"‚o "i iq : "n" !j}n"
m"dn tnQ Vi "nQ $"[$ \\’ v"n" !j}n" m"@n tnQ nQ{n vi \\’ <
.oli "n" !j}n" Vi ê $@ a#$ "!n" ^ n"hnQ P! $k $‡ "x $~nQXn" v m"t$ !lm < T"#$ !P !"h=nQVˆnQ m"n" "p\ "n" !j}n" nQ{n <
S‡ ?~ ?rnQ "•$ $e m"n" ?i v m"n" Q$ Qii !"i% !jên "}n" 985<
K"i $rn VW $e n\ $"W\ $>
?i%n ^ a#$ "! $e n\ $"W\ Y¤nWnQ $án" ! ?€n . aên ^ a\ $"o
m"n" ?i "o_$ Q$ m"n" ’ "bnQŽm $"_! vo !j[$ ?rnQ $‡ < K"i \k!?i%n ^ Vo !# !j•nQ $e n\ $"W\ Gn$
v ?i !j•nQ m"n" G m" ^ $án" ! ?€n "l ]nQ vQ ?i m"n" Q"} $"‚!©!j[$ ?rnQ $‡ <
Đi vi aoli m"n" "n" !j}n" nQ{n ^ "i \k! ?i%n ^ Vhi !á$ V[nQ $e a#$
a€ ]o ^ ?i m"n" Y¤ Žm $"_! ak !j[$ ?rnQ $‡ <K"i $"•n $‡ $k m"n" $@n $" | ?Pn !"bnQ Y $‡ `dn Y: ?i%n ám a\vi%$ ^ !iPm ?i%n !h‡nQ ?i TĐž’ v ?r Vi "n" !j}n" $e m"@n tnQ "o_$ !jy Y Q>$ an n"k!’<
VW Tnh #]án v$ 0/V chn ,hVnh ch]c U c nângXhY:
.#$ !á$ V[nQ aên !j[$ ?rnQ $‡ "i m"n" m"[ !"r$ vo !jy Y Mb\‚\$e $‡ $k m"n" v $"ê ?r a\ vi%$ $e $‡ $k nWnQ8"l<
Mb\‚\ $dn !un" "i "l !di vi !di ?yn" \t$ :
M$" ( Gđm+G
0 ) Rt
i .u (2− 1
❑ ), [ $m ]
TjonQ ?> : G?\ 8 !di !j•nQ ?yn" \t$ ^ šN›
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G 8 !j•nQ ahfnQ $e $‡ $k `$ "nQ^ šN›
R ! 8 `án xn" $e !nQ ^ š\›
i 8 !s Y !jXn
8 Y \l$" n"án" $e j€nQ j•$
η 8 "i% Yk! $e $‡ $k
Tˆ $"P ?r a\ vi%$ ^ $@n !"ê\ V# !j < H% Y V# !j n m"[ !"r$vo $"P ?r a\ vi%$
0"P ?r a\ vi%$ H% Y N"ª n"nQ N"’ 7^4
TjnQ }n" T`’ 7^—4 N_nQ nX NQ’ 9^Rk! n_nQ nX RNQ’ 9^4
\b #nh #]án v$ 0/V chn ,hVnh ch] cU c .% chy!n -^ c) v$ -^ c]nTjonQ !xn" v $"•n aoli m"n" $"o $‡ $k n^$@n $" | a \o\‚nVo
m"n" !lo j "bnQ ?hf$ a‡n "‡n !jy Y \b\‚n \ `án" ]‚ $> !"q !jhf!!"‚o ?h=nQ j
Tjy Y Qi !$ an n"k! $"o m"Žm " m"n" a$ $‡ $k Vi $"qn !"cn!"‚o $"iX Qi>:
{[1 ( '
1,2− 2
3ct
Rb)+ 2 3c t +#
R b ]− ( . 4
G }( ,[m
-2]
TjonQ ?>: 1 −hệ - t3 n(* l n(# / b5m
' −hệ - nh5m (i 60 b5nhx7v8đ n(# 1 36910−4
2−hệ - m6 -5t t3 t # / (3÷5 )10−4
3ct −b5nk:nhc2 t3 cụ [ m ]
Rb−b5n k:nhb5nh x7[m ]
7/23/2019 Damh Trang Bị Điện
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¡ – "% Y \ Yá! a†n^˜ ÷10¿10−4[m]
(−l c3 c nả c 6ủ (i;t3<n1m2[ $
m2 ]
S – Di%n !x$" $dn Qi> $e $‡ $kš m2¿
G – Tj•nQ ahfnQ $e $‡ $k "bnQ \nQ !dišN›
i !jy Y Qi !$ ^!$ ?r Vi $"qn v ]á$ ?yn"^$> !"q !xn" ?hf$ !"=i Qin m"n"t 0h v \oo\‚n m"n"
M 0h=(1,1−1,2 )
J đ
c
= đ
c
t 0h
„J=
t 0 i2−
G . Rb .
i 2 . ct + #
Rb
¿ , [ $m ]
TjonQ ?>:J đ
c
−m//m7n )u5n t:nh c 6ủ đ n(, c$ t3u9 n4 đ n(, [k( m2 ]
= đ
c
−t c đ , )u69 c 6ủ đ n(, c$
[
36d
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]¦ – \o\‚n án !xn" $e !on "% !á$ V[nQ aên `án" ]‚ [k( m
2 ]
¨ – !$ ?• $e `án" ]‚
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cbTnh chn nVa châa S%dn ceV cU c ,hVnh
.#$ $@n !"iP! ?_! aên \á m"n"a#$ "hnQ !W\’ `…nQ:
¡ 1
❑ h
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TjonQ ?>:µ 8 "% Y \ Yá!nP \á m"n" a\ ! $"k! ai% \inQ v mai "p\ `…nQ
QnQ !"} µ^4
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!"‚o
`iq !"t$ Y:
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k
TjonQ ?>: nc – .#$ "! $e n\ $"W\
# −h8nht3>nh 0h n n(5
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η 8 "i% Yk!
– "% Y V# !j^—4 ÷0,85 ¿
N\ $"W\ "p\ m"di $> !x$" Y ( nc . # ) « ( nc . # ) 9c
^Txn" $"•n n\ $"W\ ?i%n ak !di $e $@ !j[$ !
0@ !j[$ ! "á$ vi $á$ aoli $@ !j[$ !"bnQ !"h=nQ g $‡ $k ak !di :!" $"o \>$"o_$ Q@ a \r! n\ $"W\ ?i%n <H}n" VlnQ x$" !"h$ $e n\ $"W\ ?i%n <H}n"VlnQ x$" !"h$ $e n\ $"W\ ?hf$ $"P !lo !"n" $á$ aoli
VW NVa châa 0y #f% hnh #*nbVˆnQ ?q vcn $"qn $á$ $"i !iP! `…nQ QnQ Y{!$> x$" !"h$ "bnQ an ^"}n" VlnQ "á$ n" Y{! !"Žm v[n^m"oi^?in"’
\W NVa châa #*n 0ia aj# c)bVˆnQ ?q vcn $"qn vc! !"q "}n" $@ ancW $n #f% hnh chk nhậ#bVˆnQ ?q vcn $"qn $á$ vc! Vi n"h:!"Žm !k\ ^?h=nQj^>nQ !"Žm Vi
l$ nVa châab VˆnQ ?q vcn $"qn $á$ vc! Yiê !jh=nQ Yiê !j•nQ<
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