Determine impedance in each branch - delta connection, Electrical Engineering

Assignment Help:

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.

Solution

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.


Related Discussions:- Determine impedance in each branch - delta connection

Determine the transfer function in notch network, Q. The twin-tee or notch ...

Q. The twin-tee or notch network shown in Figure is often used to obtain band-reject characteristics. (a) Determine the transfer function V 2 /I 1 . (b) Find the angular freq

Equipment parameter data, Equipment parameter data: The schematic diag...

Equipment parameter data: The schematic diagrams for existing substations have to be prepared along with information of power transformer rating and numbers, impedance values,

Calculate the current flow and voltage drops, Based on Figure, using star-d...

Based on Figure, using star-delta transformation, calculate the current flow and voltage drops at 6kΩ resistor.

Determine the value of capacitance to give resonance, Determine the value o...

Determine the value of capacitance to give resonance: A circuit shown in Figure having a resistance of 5 Ω, an inductance of 0.4 H and a variable capacitance in series is conn

Assinment, Ask question #Minimum mechanism of microwave communication 100 w...

Ask question #Minimum mechanism of microwave communication 100 words accepted#

Determine the ratio of full-load current, The rotor of a wound-rotor induct...

The rotor of a wound-rotor induction motor is rewound with twice the number of its original turns,with a cross-sectional area of the conductor in each turn of one-half the original

Pu value, the p.u. reactance of a 25 MVA, 13.2 kV alternator 0.5 p.u. On a ...

the p.u. reactance of a 25 MVA, 13.2 kV alternator 0.5 p.u. On a base of 50 MVA and 13.8 KV the p.u. value shall be

Define some illustrations of common control characters, Define some Illustr...

Define some Illustrations of Common Control Characters? Illustrations of common control characters include: Carriage return (ASCII code 0Dh), which positions the cu

Find the per-unit voltage regulation, Q. A single-phase, 3-kVA, 220:110-V, ...

Q. A single-phase, 3-kVA, 220:110-V, 60-Hz transformer has a high-voltage winding resistance of 0.3 , a low-voltage winding resistance of 0.06 , a leakage reactance of 0.8  on i

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd