giáo trình an toàn Điện

Gio trnh an ton in

Bin tp bi:lecongthanh

www.princexml.comPrince - Non-commercial LicenseThis document was created with Prince, a great way of getting web content onto paper.

Gio trnh an ton in

Bin tp bi:lecongthanh

Cc tc gi:quyenhuyanhlecongthanh

Phin bn trc tuyn:http://voer.edu.vn/c/a4bc9586

MC LC

1. Gio trnh1.1. Ba sch1.2. Gii thiu1.3. Mt s t chc v tiu chun an ton in trn th gii1.4. Cc tiu chun an ton in trong nc1.5. Tng quan v tai nn in1.6. Cc khi nim c bn v an ton in1.7. Phn tch an ton trong mng in1.8. Bo v ni t1.9. Bo v ni dy trung tnh1.10. Bo v chng dng in r1.11. Bo v chng in p cao xm nhp sang in p thp1.12. Bo v chng st1.13. Bin php k thut an ton in1.14. S cu ngi b in git1.15. Ti liu tham kho1.16. Gii thiu mt s website v an ton in1.17. Mc lc

Tham gia ng gp

1/29

Gio trnhBa sch

Tm tt

Ba sch gio trnh an ton in

Ni dung

Xem chi tit ti y

2/29

Gii thiu

Tm tt

Gio trnh An Ton in c bin son nhm trang b cho sinh vin ngnh Cng NghK Thut in v Cng Ngh in in T nhng kin thc c bn v an ton innhm m bo an ton cho con ngi khi s dng v vn hnh thit b in trong ccloi mng in khc nhau. Gio trnh gm 10 chng:

- Chng 1: Phn tch cc dng tai nn in, tc dng ca dng in i vi c th con

ngi v cc yu t nh hng

- Chng 2: Trnh by cc khi nim c bn v an ton in nh: dng in tn trong

t, in p bc, in p tip xc, cc h thng ni t tiu chun.

- Chng 3: Phn tch an ton in trong mng in trung tnh cch in, trung tnh ni

t, mng in mt pha v ba pha.

- Chng 4: Trnh by bin php bo v ni t.

- Chng 5: Gii thiu bin php bo v ni dy trung tnh.

- Chng 6: Trnh by bin php bo v chng dng r, cu to v tnh nng kh c bov ELCB, RCD, RCCB.

- Chng 7: Gii thiu bin php bo v chng in p cao xm nhp in p thp.

- Chng 8: Phn tch cc k thut chng st nh trc tip, chng st lan truyn trn

ng ngun v ng tn hiu, gii thiu gii php chng st ton din 6 im.

- Chng 9: Trnh by cc bin php an ton, cc thit b bo h, cc loi bin bo, cc

yu cu an ton khi s dng in.

- Chng 10: Trnh by cc bin php s cp cu ngi b in git

Ph lc 1, 2, 3: Gii thiu cc t chc an ton trong v ngoi nc, cng nh mt strang Web v an ton in tiu biu.

3/29

Gio trnh do TS. Quyn Huy Anh ch bin v ThS. L Cng Thnh bin son theo sphn cng ca b mn in Kh Ho & Cung Cp in - Trng i Hc S Phm KThut Thnh Ph H Ch Minh, trn c s tham kho cc ti liu v an ton in ca BNng Lng, B Cng Nghip, Vin K Thut Bo H Lao ng, ti liu ca cc hngABB, Group Schneider v ti liu t Internet.

Mi kin ng gp xin gi v b mn in Kh Ho & Cung Cp in - Trngi Hc S Phm K Thut Thnh Ph H Ch Minh theo a ch: 01 V Vn Ngn,Qun Th c, Tp H Ch Minh, Tel: 08-8972455, Email: [email protected] [email protected]

Ni dung

Xem chi tit ti y

4/29

Mt s t chc v tiu chun an ton in trn th gii

Tm tt

1. IEEE :International Electrical Institute of Electrical and Electronics Engineers

IEEE 80: Grounding AC Facilities

IEEE C2-1997: National Electrical Safety Code

2. IEC- International: Electrotechnical Commission

IEC 950: Electrical Safety

IEC 1024.1: Lightning protection

IEC/TR 62102 (2001-03) Ed. 1.0: Electrical safety - Classification of interfaces forequipment to be connected to information and communications technology networks

IEC 60079-1 (2001-02) Ed. 4.0: Electrical apparatus for explosive gas atmospheres -Pa1: Flameproof enclosures "d"

IEC 60079-2 (2001-02) Ed. 4.0: Electrical apparatus for explosive gas atmospheres -Pa2: Pressurized enclosures "p"

IEC 60079-15 (2001-02) Ed. 2.0: Electrical apparatus for explosive gas atmospheres -Part15: Type of protection "n"

IEC 61557-1 (1997-02): Electrical safety in low voltage distribution systems up 1000V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protectivemeasures - Part 1: General requirements

IEC 61557-2 (1997-02) :Electrical safety in low voltage distribution systems up 1000V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protectivemeasures - Part 2: Insulation resistance

IEC 61557-3 (1997-02): Electrical safety in low voltage distribution systems up 1000V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protectivemeasures - Part 3: Loop impedance

5/29

IEC 61557-4 (1997-02): Electrical safety in low voltage distribution systems up 1000V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protectivemeasures - Part 4: Resistance of earth connection and equipotentiabonding

Ni dung

1. IEEE2. IEC3. NEMA4. ANSI5. OSHA6. CENELEC7. UL8. NEC9. NFPA

Xem chi tit ti y

6/29

Cc tiu chun an ton in trong nc

Tm tt

Ph lc ny gii thiu cc tiu chun an ton trong v ngoi nc nhm mc ch gipsinh vin bit cc tiu chun hin hnh lin quan n an ton in trong v ngoi nc.Trong khun kh ca ph lc, cc tiu chun c gii thiu v mc ch ca tiu chun,sau l cc mc chnh.

i vi cc tiu chun an ton in ca Vit Nam, sinh vin c th tm c phn trnhby ni dung chi tit trong ti liu Tp hp cc tiu chun k thut AN TON VIN do B Lao ng Thng Binh v X Hi, Nh Xut Bn Lao ng n hnhnm 1998 ti H Ni, qua nm k v c th hn cc qui nh v an ton. Trn c sny, vn dng tt vo thc t v nng cao hiu qu an ton in trong cng tc t chcan ton trong x nghip, n v cng tc sau ny.

1. TCVN 5556 1991: Thit b in h p - Yu cu chung v bo v chng in gitTiu chun ny p dng cho tt c cc loi thit b in, my in xoay chiu c inp n 1.000V, tn s danh nh n 10kHz v thit b in mt chiu c in p n1.500V. Tiu chun ny qui nh cc yu cu chung v bo v ngi trnh tip xc vicc b phn mang in ang vn hnh v tip xc vi cc b phn bnh thng khngmang in lc xut hin trn cc b phn ny in p nguy him.

Ni dung bao gm cc mc sau:

* Yu cu i vi bo v trnh tip xc vi cc b phn mang in ang vn hnh

- Yu cu chung

- Yu cu i vi v bo v

- Yu cu i vi che chn bo v

- Yu cu i vi b tr bo v

- Yu cu i vi ch cch in ch lm vic

- Yu cu khi s dng in p an ton

* Yu cu i vi bo v khi tip xc vi cc b phn khng mang in lc c in pnguy him

7/29

- Yu cu chung

- Yu cu i vi ni khng

- Yu cu i vi ni t bo v

- Yu cu i vi ct bo v dng r

- Yu cu i vi cch in bo v

- Yu cu khi s dng in p an ton

- Yu cu i vi cch ly bo v

* Ph lc 1: Thut ng v nh ngha

*Ph lc 2: Tr s in p chm ph thuc thi gian tc ng

Ni dung

1. TCVN5556-1991: Thit b h p Yu cu chung v bo v chng in git2. TCVN 4756-89: Quy phm ni t v ni khng cc thit b in3. TCVN 4086 85 : An ton in trong xy dng4. TCVN 3146 86 : Cng vic hn in - Yu cu chung v an ton5. TCVN 4726 89: K thut an ton my ct kim loi Yu cu i vi trang

thit b6. TCVN 4163 85 : My in cm tay - Yu cu an ton7. TCVN 5180 90 : Pa lng in - Yu cu chung v an ton8. TCVN 3718 82 : Trng in t tn s Radio Yu cu chung v an ton9. TCVN 2572 78 : Bin bo an ton v in

10. TCVN 3259 1992 (sot xt ln 1) : My bin p v cun khng in lc Yu cu an ton

11. TCVN 3145 79 : Kh c ng ct mch in, in p n 1.000 V Yu cuan ton

12. TCVN 2295 78 : T in ca thit b phn phi trn b v ca trm bin ptrn b Yu cu an ton

13. TCVN 4115 85 : Thit b ngt in bo v ngi dng cc my v dng cin di ng c in p n 1.000V Yu cu k thut chung

14. TCVN 3623 81 : Kh c in chuyn mch in p n 1.000V Yu cu kthut chung

15. TCVN 5334 1991: Thit b in kho du v sn phm du Quy phm kthut an ton trong thit k v lp t.

16. TCVN 3620 1992 ( sot xt ln 1) : My in quay Yu cu an ton

8/29

17. TCVN 5587 1991: So cch in18. TCVN 5588 1991: ng cch in19. TCVN 5589 1991: Thm cch in20. TCVN 5586 1991: Gng cch in

Xem chi tit ti y

9/29

Tng quan v tai nn in

Tm tt

Hin nay, in nng c s dng ph bin trong nhiu lnh vc (cng nghip, snxut, sinh hot dn dng ...) v khp mi ni (t thnh th cho ti nng thn v ccvng xa, vng su). S ngi lm cng vic lin quan vi in ngy cng nhiu, do vn an ton in cn phi c quan tm trong cng tc bo h lao ng.

Khc vi cc mi nguy him khc, trc khi xy ra c th thy cc triu chng hocpht hin trc bng gic quan, chng hn nh thanh kim loi nng , b phn myquay xc xch, ting gy v, mi kh c ..., mi nguy him in ch c th bit ckhi tip xc vi cc phn t mang in, nhng nh vy l c th b tai nn hoc chtngi. V th thiu hiu bit v an ton in u c th b tai nn in, do vy phi hiumt s khi nim v an ton in nhm trnh c nhng nguy him c th xy ra chobn thn cng nh cho nhng ngi xung quanh.

Ni dung

1. t vn 2. Tai nn in

1. in git2. t chy in do h quang3. Ha hon n

3. Tc dng ca dng in i vi c th con ngi1. Tc dng kch thch2. Tc dng gy chn thng

4. Cc yu t nh hng n tai nn in git1. Gi tr dng in qua ngi2. Thi gian b in git3. in tr ca ngi4. ng i dng in qua ngi5. Tn s dng in6. Mi trng xung quanh7. in p cho php8. in p cm ng

5. Phn loi x nghip theo tiu chun an ton in1. X nghip t nguy him2. X nghip nguy him3. X nghip c bit nguy him

6. Nguyn nhn chnh gy ra tai nn in

10/29

1. i vi mng in h p2. Do b phng in vo c th khi n gn qu thit c in p cao3. in p bc4. Do khng chp hnh quy tc an ton in

Xem chi tit ti y

11/29

Cc khi nim c bn v an ton in

Tm tt

Cc khi nim c bn v an ton in xut pht t s phn tch cc hin tng chm tgy ra. V th, c cc bin php phng tai nn in hiu qu, bc u tin cnphi phn tch cc hin tng ni trn.

Ni dung

1. t vn 2. Dng in tn trong t3. in p bc4. in p tip xc5. Cc h thng ni t chun6. h thng IT7. H thng TN

Xem chi tit ti y

12/29

Phn tch an ton trong mng in

Tm tt

Khi tip xc vi mng in, ty theo mng in v cch tip xc, dng in s tc dngln con ngi nhng mc khc nhau, c th l t nguy him hay rt nguy him. ivi bt k mng in ba pha no, nguy him nht vn l ng thi chm vo hai phakhc nhau, lc in th t vo ngi s ln nht.

Tuy nhin, trng hp nh vy t xy ra. Tai nn thng xy ra do ngi chm vo mtpha l ph bin chim 80 83%. Khi mc nguy him ph thuc vo cc yu tnh in p mng, tr s in tr cch in ca cc pha, in dung ca pha i vi tv nht l tnh trng

Ni dung

1. t vn 2. Chm c hai cc ca mng in3. Chm vo mt cc ca mng in cch in i vi t4. Chm vo mt cc ca mng in c ni t

1. Mng in c ni t ch c mt dy2. Mng in c ni t gm hai dy dn

5. Mng in ba pha ba dy1. Mng in c dy trung tnh cch in i vi t2. Mng in c trung tnh trc tip ni t

6. Mng in ba pha bn dy1. Mng in c dy trung tnh cch in i vi t2. Mng in c dy trung tnh cch in i vi t

Xem chi tit ti y

13/29

Bo v ni t

Tm tt

Tai nn in git thng xy ra do ngi vn hnh v chm phi b phn mang in,hoc do tip xc vi cc b phn ca thit b in bnh thng khng mang in nhngdo cch in b h hng tr nn c in. trnh in git trc tin l phi chp hnhnghim chnh quy tc vn hnh cc thit b in, tip n l phi thc hin vic ni tcc b phn c th b mang in khi cch in b h hng gi l bo v ni t.

H thng bo v ni t l h thng khng tham gia vo s lm vic ca mng innhng c thc hin theo yu cu an ton s dng thit b in, phng tai nndo v thit b c in p.

Bng cch ni v thit b vi h thng ni t, bo v ni t l bin php ph bin nht,an ton v hu hiu trnh tai nn do dng in r ra v my.

Mc ch ca bo v ni t l gim in p so vi t n tr s an ton cho ngi, cc b phn kim loi bnh thng khng mang in nhng do cch in b hng c inr ra.

Ni dung

1. t vn 2. ngha ca bo v ni t3. Phm vi ng dng4. B phn ni t5. in tr ni t6. in tr sut ca t7. Phn tch cc h thng ni t hin i

Xem chi tit ti y

14/29

Bo v ni dy trung tnh

Tm tt

Khi c s c do cch in ca thit b b h hng th xy ra ngn mch gia pha c sc vi dy trung tnh ca li in. trnh s c loi ny xy ra, phi ni v thit bin n dy trung tnh bo v, tc l thc hin bo v dy ni dy trung tnh.

Ni dung

1. t vn 2. Bo v ni dy trung tnh trong cc mng in

1. Mng in h p ba pha bn dy, trung tnh trc tip ni t2. Mng in h p ba pha nm dy

3. Ni t lp li on dy trung tnh1. Mng in ba pha bn dy2. Mng in h p ba pha nm dy

4. Phm vi ng dng bo v ni day trung tnh5. Kh c in bo v

1. Cu ch2. Cng tc t ng

Xem chi tit ti y

15/29

Bo v chng dng in r

Tm tt

Mng in h p lm nhim v truyn ti v phn phi in nng n cc h tiu th hp. c im quan trng ca n l phn b trn din tch rng v thng xuyn c ngilm vic vi cc thit b in. Mng in h p ph bin l mng ba pha bn dy-trungtnh trc tip ni t. V vy, lun xut hin kh nng c dng in chy t dy dnxung t v sau tr v ngun. Dng in r nu c cng i xung t v sau trv ngun. Dng in r xung t ny sinh ra do c s c thng gi l dng in chmt.

Dng in chm t c th gy nguy him, thm ch cht ngi ph thuc vo cng dng in v mi trng xung quanh. Nguy him y c th l ngi b cht do ingit hay cng trnh s dng in b chy, n do chm in khi xy ra chc thng cchin.

Hin khng c cch no ngn chn dng in chm t nhng c th cch ly mch inb r ra khi ngun in mt cch nhanh chng bng mt kh c in gi l thit b inchng dng in r.

Ni dung

1. t vn 2. Kh c in chng dng in r

1. Thit b in chng dng in r2. Cc hnh thc bo v bng thit b in chng dng in r3. Cu to kh c in chng dng in r4. Nguyn l hot ng ca thit b chng dng in r

3. Phm vi ng dng

Xem chi tit ti y

16/29

Bo v chng in p cao xm nhp sang in p thp

Tm tt

Nguy him ca s xm nhp in p cao sang in p thp l s chm in ca cc phnt c in p khc nhau ca thit b in khi cch in ca thit b in b chc thng.

Hin tng ny thng xy ra cc my bin p di ng cung cp in cho cc n,dng c in cm tay, my hn in Khi in p cao xm nhp vo in p thp (inp n 75V) th rt nguy him, v cc thit b in ny c cch in khng cao. Hintng ny t xy ra i vi cc my bin p c nh dng trong mng in ng lc haychiu sng. Cc cun dy in p khc nhau ca loi my bin p c cch in bngcc ng baklit rt chc chn nn s xm nhp in p ni trn thng xy ra cc ura cc cun dy. i khi v gi bo lm ng dy cao p b t, ri trn mng inh p.

Hin tng xm nhp in p cao sang in p thp cng thng xy ra cc mng inp thp c trang b my bin p o lng, my bin dng in m kh nng ngi phitip xc rt cao. Vic nh gi s nguy him ca hin tng xm nhp in p cao sangin p thp l cn thit nhm tm ra bin php bo v thch hp. Bin php bo v sxm nhp in p cao sang in p thp ph thuc vo ch lm vic ca trung tnh.

Ni dung

1. t vn 2. S nguy him khi in p cao xm nhp sang in p thp3. Bin php bo v s xm nhp ca in p cao sang in p thp

Xem chi tit ti y

17/29

Bo v chng st

Tm tt

Vit Nam l mt nc nm trong khu vc nhit i m, kh hu Vit Nam rt thun licho vic pht sinh, pht trin ca dng st. S ngy dng c Vit Nam trn nhiu khuvc thuc loi kh ln. S ngy dng cc i l 113,7 (ti ng Ph), s gi dng cci 433,18 gi ti Mc Ha. Ti Vit Nam, st c cng mnh ghi nhn c bngdao ng k t ng c bin Imax = 90,67kA ( S liu ca Vin Nghin Cu St GiaSng Thi Nguyn).

Thit hi do st rt ln, i khi nh hng mnh n nhiu hot ng kinh t x hithm ch n tnh mng con ngi. Ti Vit Nam, ch tnh ring nm 2001, i vingnh in c 400 s c m 50% do st gy ra (Bo Tin Phong, 14/08/02). Cn i vingnh Bu Chnh Vin Thng th c 53 s c do st (chim 27,13% s c vin thng)gy thit hi l 4.119 t v tng thi gian thi gian mt lin lc do st l 716 gi (Chngst cho mng vin thng Vit Nam Nhng iu bt cp. L Quc Tun Ban VinThng, Phm Hng Mai-TTTTB).

V vy vic ra cc gii php phng chng st v la chn cc thit b chng st phhp mang tnh cp thit.

Ni dung

1. t vn 2. Tng quan v st3. Phn loi cng trnh cn bo v4. Gii php chng st ton din 6 im5. K thut thu st ti im nh trc6. Dn st xung t an ton7. Tn nhanh nng lng st vo t8. ng th cc h thng t

Xem chi tit ti y

18/29

Bin php k thut an ton in

Tm tt

Cc cng c bo v ng vai tr rt quan trng v khng th thiu trong cc bin phpan ton in cho con ngi. Cc cng c bo v thng dng bao gm: cc thit b kimtra in, kh c bo v, thit b bo v cm tay, ...

Ni dung

1. t vn 2. Cc cng c bo v

1. Phn loi2. Cc cng c cch li bo v ch yu v ph tr3. Cc cng c lm vic cc trang thit b in khi ct in4. Cc bin bo phng nga5. Cc cng c bo v dung khi lm vic trn cao6. S dng v bo qun cc cng c bo v

3. An ton in khi s dng v vn hnh cc thit b dung in4. Chc nng cc cng c bo v

Xem chi tit ti y

19/29

S cu ngi b in git

Tm tt

in git thng rt nguy him n tnh mng. So vi cc loi tai nn do cc nguynnhn nguy him khc th tai nn do in cng thuc loi cao, c th gy cht ngi trongthi gian ngn v ngi b nn khng cm nhn c mi nguy him e da mnh. Vvy, khi thy ngi b tai nn in, bt k ngi no cng phi c trch nhim tm mibin php cu ngui b nn.

iu kin ch yu cu ngi c kt qu l phi hnh ng nhanh chng, kp thi vc phng php. Kinh nghim thc t cho thy rng hu ht cc trng hp b in gitnu c kp thi cu cha th kh nng cu sng cao.

Ni dung

1. t vn 2. Phng php tch ngi b nn ra khi mch in

1. Trng hp ct c mch in2. Trng hp khng ct c mch in

3. Phng php s cu ngi b nn1. Nn nhn cha mt tri gic2. Nn nhn mt tri gic3. Nn nhn tt th

4. Phng php lm h hp nhn to1. Phng php h hp nhn to kiu nm sp2. Phng php h hp nhn to kiu nm nga3. Phng php h hi thi ngt

Xem chi tit ti y

20/29

Ti liu tham kho

Tm tt

1. Nguyn Xun Ph - Trn Thnh Tm.

K thut an ton trong cung cp v s dng in. Trng H S Phm K Thut.Tp.HCM 1989

2. B Xy Dng. Vin Xy Dng Cng Nghip

K Thut an ton in trn cng trng xy dng. Nxb Xy dng, H Ni 1981

3. B Nng Lng. Cng Ty in Lc 2

Quy trnh k thut an ton in. Cty in Lc 2, Tp.HCM 1993

4. Trng H Bch Khoa. Tp.HCM. B mn Ch My.

K thut bo h lao ng. Tp.HCM 1989

5. ABB Vit Nam

An ton trong h thng in dn dng. KF Neumayer Germany. Lim Say LeongSingapore.

6. Phan Th Thu Vn.

Gio trn an ton in. Nxb i Hc Quc Gia Tp HCM, 2002.

7. Cc tiu chun an ton in trong nc: TCVN 5556-1991, TCVN 4756-89, TCVN4086-85, TCVN 3146-86,TCVN 4726-89, TCVN 4163-85, TCVN 5180-90, TCVN3718-82, TCVN 2572-78, TCVN 3259-1992, TCVN 3145-79, TCVN 2295-78, TCVN4115-85, TCVN 3623-81, TCVN 5334-1991, TCVN 3620-1992, TCVN 5587-1991,TCVN 5588-1991, TCVN 5589-1991, TCVN 5586-1991

Ni dung

Xem chi tit ti y

21/29

Gii thiu mt s website v an ton in

Tm tt

1. STAMEQ VietNam Directorate For Standards and Quality (also has TCVN VietNam

Standards)

http://home.vnn.vn/tcvn/start/main_vn.htm

2. Electrical Utilities Safety Association

Ontario-based org. serves the safety needs of the electrical, telecommunications, andwaterworks inds. Find out about services and get contacts.

http://www.eusa.on.ca/

3. Home Electrical Safety

National Electrical Safety Foundation provides handy tips and practical questions to askabout practicing safety around home electronics.

http://www.pueblo.gsa.gov/press/electric.htm

4. NESF- National Electrical Safety Foundation Hosted by the National ElectricalSafety Foundation. Click on Mr. Plug for information on home, work, and schoolelectricity safety.

http://www.nesf.org/

5. FEMA

Outlines warning signs of an impending electrical storm and safety precautions to helpminimize risk of damage or injury.

http://www.fema.gov/library/thunderf.htm

6. NFPA National Fire Protection association

Chronicles the seminars and activities of this safety organization, products, and fire codedevelopment.

22/29

http://www.nfpa.org/

7. Safety Link

The Safety Link is the web's most comprehensive collection of electrical product safetyand standards resources. Readily access the World's electrical product safety approvaltest labs and standards bodies including CSA, FM Research, the NRTLs, SEMK

http://www.safetylink.com/

8. Underwriters Laboratory, Inc. Independent, not-for-profit product safety testing andcertification organization

http://www.ul.com/

Ni dung

Xem chi tit ti y

23/29

Mc lc

Tm tt

CHNG 1: TNG QUAN V TAI NN IN

1.1 t vn 1

1.2 Tai nn in 1

1.3 Tc dng ca dng in i vi c th con ngi 1

1.4 Cc yu t nh hng n tai nn in git 2

1.5 Phn loi x nghip theo quan im an ton in 7

1.6 Nguyn nhn chnh gy ra tai nn in 7

CHNG 2 : CC KHI NIM C BN V AN TON IN

2.1 t vn 10

2.2 Dng in tn trong t 10

2.3 in p bc 12

2.4 in p tip xc 13

2.5 Cc h thng ni t chun 15

CHNG 3 : PHN TCH AN TON TRONG MNG IN

3.1 t vn 18

3.2 Chm vo c hai cc ca mng in 18

3.3 Chm vo mt cc ca mng in cch in i vi t 18

3.4 Chm vo mt cc ca mng in ni t 20

3.5 Mng in ba pha ba dy 22

3.6 Mng in ba pha bn dy 25

24/29

CHNG 4 : BO V NI T 2

4.1 t vn 28

4.2 ngha ca bo v ni t 28

4.3 Phm vi ng dng 29

4.4 B phn ni t 30

4.5 in tr ni t 32

4.6 in tr sut ca t 36

4.7 Phn tch cc h thng ni t hin i 37

CHNG 5 : BO V NI DY TRUNG TNH 4

5.1 t vn 41

5.2 Bo v ni dy trung tnh trong cc mng in 41

5.3 Ni t lp li dy trung tnh 42


5.5 Kh c in bo v 46

CHNG 6 : BO V CHNG DNG IN R 4

6.1 t vn 49

6.2 Kh c in chng dng in r 49


Ni dung

Xem chi tit ti y

25/29

Tham gia ng gp

Ti liu: Gio trnh an ton in

Bin tp bi: lecongthanh

URL: http://voer.edu.vn/c/a4bc9586

Giy php: http://creativecommons.org/licenses/by/3.0/

Module: Ba sch

Cc tc gi: quyenhuyanh, lecongthanh

URL: http://www.voer.edu.vn/m/6bc99939


Module: Gii thiu


URL: http://www.voer.edu.vn/m/9b136fad


Module: Mt s t chc v tiu chun an ton in trn th gii


URL: http://www.voer.edu.vn/m/cc84767b


Module: Cc tiu chun an ton in trong nc


URL: http://www.voer.edu.vn/m/8dd232fe


Module: Tng quan v tai nn in


URL: http://www.voer.edu.vn/m/d12e3676


Module: Cc khi nim c bn v an ton in


URL: http://www.voer.edu.vn/m/2c5dc1f7

26/29


Module: Phn tch an ton trong mng in


URL: http://www.voer.edu.vn/m/fd3abb98


Module: Bo v ni t


URL: http://www.voer.edu.vn/m/45d8ef64


Module: Bo v ni dy trung tnh


URL: http://www.voer.edu.vn/m/2a9c8f1c


Module: Bo v chng dng in r


URL: http://www.voer.edu.vn/m/38be6de9


Module: Bo v chng in p cao xm nhp sang in p thp


URL: http://www.voer.edu.vn/m/4bbd09c1


Module: Bo v chng st


URL: http://www.voer.edu.vn/m/e7cd37a4


Module: Bin php k thut an ton in


URL: http://www.voer.edu.vn/m/7b9cae75


27/29

Module: S cu ngi b in git


URL: http://www.voer.edu.vn/m/23ad2e0f


Module: Ti liu tham kho

Cc tc gi: lecongthanh

URL: http://www.voer.edu.vn/m/f52ee741


Module: Gii thiu mt s website v an ton in


URL: http://www.voer.edu.vn/m/9574af3b


Module: Mc lc


URL: http://www.voer.edu.vn/m/87aec263


28/29

Chng trnh Th vin Hc liu M Vit Nam

Chng trnh Th vin Hc liu M Vit Nam (Vietnam Open Educational Resources VOER) c h tr bi Qu Vit Nam. Mc tiu ca chng trnh l xy dng khoTi nguyn gio dc M min ph ca ngi Vit v cho ngi Vit, c ni dung phongph. Cc ni dung u tun th Giy php Creative Commons Attribution (CC-by) 4.0do cc ni dung u c th c s dng, ti s dng v truy nhp min ph trcht trong trong mi trng ging dy, hc tp v nghin cu sau cho ton x hi.

Vi s h tr ca Qu Vit Nam, Th vin Hc liu M Vit Nam (VOER) tr thnhmt cng thng tin chnh cho cc sinh vin v ging vin trong v ngoi Vit Nam. Mingy c hng chc nghn lt truy cp VOER (www.voer.edu.vn) nghin cu, hctp v ti ti liu ging dy v. Vi hng chc nghn module kin thc t hng nghntc gi khc nhau ng gp, Th Vin Hc liu M Vit Nam l mt kho tng ti liukhng l, ni dung phong ph phc v cho tt c cc nhu cu hc tp, nghin cu cac gi.

Ngun ti liu m phong ph c trn VOER c c l do s chia s t nguyn ca cctc gi trong v ngoi nc. Qu trnh chia s ti liu trn VOER tr ln d dng nhm 1, 2, 3 nh vo sc mnh ca nn tng Hanoi Spring.

Hanoi Spring l mt nn tng cng ngh tin tin c thit k cho php cng chng ddng chia s ti liu ging dy, hc tp cng nh ch ng pht trin chng trnh gingdy da trn khi nim v hc liu m (OCW) v ti nguyn gio dc m (OER) . Khinim chia s tri thc c tnh cch mng c khi xng v pht trin tin phongbi i hc MIT v i hc Rice Hoa K trong vng mt thp k qua. K t , phongtro Ti nguyn Gio dc M pht trin nhanh chng, c UNESCO h tr v cchp nhn nh mt chng trnh chnh thc nhiu nc trn th gii.

29/29

Gio trnhBa schGii thiuMt s t chc v tiu chun an ton in trn th giiCc tiu chun an ton in trong ncTng quan v tai nn inCc khi nim c bn v an ton inPhn tch an ton trong mng inBo v ni tBo v ni dy trung tnhBo v chng dng in rBo v chng in p cao xm nhp sang in p thpBo v chng stBin php k thut an ton inS cu ngi b in gitTi liu tham khoGii thiu mt s website v an ton inMc lc

Tham gia ng gp

giáo trình an toàn Điện

Documents