D. ROLE 3.1 Ca'u t:;io:
1. 89 Tiep die'.)m tTnh tren 5 0au noi vdi ph1,1 tai 2 Dau noi vdi nguon 6 89 Tiep die'.)m tTnh d d
2. Dau noi vdi nguon 6. 89 Tiep die'.)m tTnh d- di
3. SCt 7. 89 ong cau chl
4. Ke bat
Khi V?n chuyen yeu cau phai tranh va d?P sao cho su each di$n va cac b9 ph?n khac khong bi h- h9i.
+ Bao quan trong moi tr- ang kho rao, khong c6 bl,,li b�n va hoa chat an man. + San ph�m xuat x- bng la thiet bi tr9n b9.
+ Phl,,I tung kem theo cau ch1 roi gom 3 day chL + Kiem tra tn;mg thai su each di$n.
+ Kiem tra tn;mg thai ong cau chL
+ Kiem tra tr9ng thai cac be m?t tiep diem, tiep xt'.ic.
+ Kiem tra tr9ng thai lap ghep, d?C bi$t la cac bulong k�p day dan. + Bao d- Bng:
- Lam s9ch be m?t Su each di$n. Kiem tra tr9ng thai ong cau ch1.
Lam s9ch be m?t tiep xt'.ic cua cac tiep diem va K�p day (dung giay rap mjn). - Xiet ch?t 19i cac bulong t9i cac moi lap ghep.
3.3. Tinh ch9n cau chi:
:� Trong lu6'i di�n chilu sang sinh ho�t:
Cau ch1 d- 9c ch9n theo 2 dieu ki$n sau:
Trang d6:
+ ucimCC: di$n ap dinh mU'c cua cau ch1.
+ l0m: dong djnh mU'c cua day chay (A), nha che tC?o cho theo cac bang. + ltt: dong di$n tfnh toan la dong lau dai ldn nhat chC?Y qua day chay cau
ch1 (A).
Vdi thiet bi m9t pha (vf d1;1 cac thiet bi di$n gia d1;1ng), dong tinh toan chfnh la dong djnh mU'c cua thiet bi di$n:
Trang d6:
I = I = Pdm
tt cimtb U dm * COS {f)
+ ldmtb: La dong dinh mU'c cua thiet bi (A)
+ udm: di$n ap pha dinh mll'c bang 220V
+ coscp: lay theo thiet bi di$n
Vdi den s9i dot, ban la, bep di$n, b1nh n6ng IC?nh: coscp = 1 Vdi quC?t, den tuyp, dieu hoa, tu IC?nh, may gi�t: coscp = 0,8 Khi cau ch1 bao v$ I- di ba pha, dong tfnh toan xac dinh nh- sau:
Trang d6:
I pdm
It v3 * r;:; Udm * COS {f)
+ Udm: di$n ap day dinh m- c cua I- di di$n bang 380V + Coscp: lay theo thlfc te