10 6 × 1,4142 1414200 1414200 = = = = 0,818V 0,82V 6,28 × 50 × 1,1 × 5000 314 × 1,1 × 5000 1727000 ühe keeru kohta. Seega primaarmähise keerdude arv on Nprim = 0,82 x 230 = 188,6 y188 keerdu. Nsek = 0,82 x 34,7 = 28,45 y28 keerdu. _______________________________________________________________________________________________________________________ Toitekaabli valik: kuna trafo võimsus on 5 kWA ja S = S 5000 U ×I× 3 I = = = 7, 2 A U× 3 400 × 1,73 5000 = 1660 ÷ 230 = 7,2 A või 3 . Seega, kui arvestada sirge juhtme voolutiheduse C = 6-8 amprit ca 7A/mm2, võiks piisata 2,5 mm2 ristlõikega juhtmest faasi kohta (varu ca 150% 7,2 ÷ 2,5 = 2,88 A / mm ). 2
UDF : broad coalition of groups; Linked to Congress movement, trades unions and churches; Mobilized urban uprisings against apartheid state best known member Arch-Bishop Desmond Tutu Progressive party: committed to a qualified non-racial franchise Helen Suzman Main opposition to NP in Parliament before 1994 Later became the Democratic Party Inkatha: Zulu Nationalist party ; Led by Chief Mangosuthu Buthelezi co-operated with the apartheid state by governing the Kwa Zulu homeland but refused to accept `independence' Rejected the armed struggle Later called Inkatha Freedom Party (IFP) Transition Why did NP leaders not fight to the end to retain power? Why was it possible to negotiate a transition instead of fight a civil war? Authoritarian to democratic 1. The old regime breaks down. 2
annaabi.ee 
