Determine impedance in each branch - delta connection, Electrical Engineering

Determine Impedance in each branch - delta connection:

A delta connected balanced 3-phase load is supplied from a 3-phase 400 V supply. The line current is 30 Amp and the power taken by the load is 10 kW. Determine

1.      impedance in each branch,

2.      the phase current,

3.      power factor, and

4.      Power consumed if the same load is connected in star.


Delta Connection Load

Line current IL = 30 Amp

Phase current I ph = 30/√ 3 = 17.32 Amp

(a) Phase impedance Z ph = V ph / I ph  =   400 V/17.32 Amp

                                                                          = 23.095 Ω

(b) Phase current Iph = 30 Amp (already calculated)

(c) Total 3-phase power = 10 kW

     But 3-phase power =  √3 VL  I L cos φ

∴          cos φ=   P/ √3 VL  I L       = 10 × 1000 /√3 × 400 × 30

                                                       = 0.4811

(d) The same power shall be consumed if load is delta connected i.e. 10 kW.

Posted Date: 2/5/2013 2:15:41 AM | Location : United States

Related Discussions:- Determine impedance in each branch - delta connection, Assignment Help, Ask Question on Determine impedance in each branch - delta connection, Get Answer, Expert's Help, Determine impedance in each branch - delta connection Discussions

Write discussion on Determine impedance in each branch - delta connection
Your posts are moderated
Related Questions
Q. A silicon BJT has an emitter current of 5m Aat 300 K when the BEJ is forward-biased by vBE = 0.7 V. Find the reverse saturation current of the BEJ. Neglecting ICBO, calculate iC

OBJECTIVES Use an NXT to control the speed of a DC fan motor. You will us a potentiometer to set the speed and the second fan motor as feedback. Use the circuit from Lab 1 to

what is the full design for 16 logic microoperations

Explain Hall effect. Consider a slab of material wherein there is a current density J resulting by an applied electric field Ex in the x- direction. The electrons will drift al

Q. How can a JFET be used as a voltage controlled resistor. Explain from drain characteristics? The region to the left of the pinch off locus is referred to as the ohmic region

An induction motor takes 350 kW at 0.8 power factor lagging while driving a load. When an overexcited synchronous motor taking 150 kW is connected in parallel with the induction mo

Q. The external - characteristics data of two shunt generators in parallel are given as follows: Load Current, A: 0 5 10 15 20 25 30 Terminal voltage I, V: 270 263 254 240 22

Why dummy coil is used in wave winding porpose of dc generator

Microprocessor and its Applications

The coursework requires you to work in pairs to write a Java application that will take a numerical representation of a MIPS program and simulate its execution. MIPS is a Load-S