Electrical Technology Grade 12 IEB 2019 Information Sheet

Downloaded from hlayiso.com NASIONALE SENIOR SERTIFIKAAT: ELEKTRIESE TEGNOLOGIE – FORMULEBLAD Bladsy i van ii FORMULEBLAD DRIEFASE-WS-OPWEKKING RLC-KRINGBANE STER 1 XL = 2πfL en XC = VL = 3 VF en VF= IF × ZF 2πfC IL = IF FO = 1 2π LC DELTA VL = VF en I= 3 × IF SERIE IT= IR= IC= IL L VF= IF × ZF Z= R2 + (XL − XC )2 DRYWING VL = IXL en VC = IXC S(Pa ) = 3 × VL × IL VT = IZ en VT = VR 2 + (VL − VC )2 Q(Pr )= 3 × VL × IL × sin θ VT cos θ = P IT = S Z R P= 3 × VL × IL × cos θ cos θ = Z V cos θ = R TWEEWATTMETERMETODE VT P= P1 + P2 XL XC VL VC 1 L = Q = = = = Z Z VT VT R C DRIEFASETRANSFORMATORS PARALLEL V= T V= R V= C VL STER VR VC VL = 3 VF en IL = IF IR = en IC = R XC DELTA VL IL = IL = 3 IF en VL = VF XL IT = IR 2 + (IL − IC )2 DRYWING I cos θ = R S(Pa ) = 3 × VL × IL IT Q(Pr )= 3 × VL × IL × sin θ XL XC VL VC 1 L = Q = = = = P Z Z VT VT R C cos θ = S IEB Copyright © 2019 BLAAI ASSEBLIEF OM

Downloaded from hlayiso.com NASIONALE SENIOR SERTIFIKAAT: ELEKTRIESE TEGNOLOGIE – FORMULEBLAD Bladsy ii van ii P= 3 × VL × IL × cos θ MOTORSPOED 60 × f S(Pa ) = 3 × VL × IL ns = p VF(p) Np IF(s) = = ns − nr VF(s) Ns IF(p) Glip = ns DRIEFASEMOTORS EN -AANSITTERS STER VL = 3 VF en IL = IF DELTA IL = 3 IF en VL = VF DRYWING S(Pa ) = 3 × VL × IL Q(Pr )= 3 × VL × IL × sin θ P cos θ = S P= 3 × VL × IL × cos θ P − verliese Rendement(η) = in Pin IEB Copyright © 2019