Power quality

User Generated

gjrrgl_gg23

Engineering

Description

i need the correct solution for these qustion with detailed steps (hand writing is ok

I will provied similar qustions and materials that have been provided previously with thier solutions to guide doing them


Unformatted Attachment Preview

A load has a waveform with a crest factor of 1.63) What transformer harmonic derating factor (THDF) should be applied to the transformer supplying this load? For a system, kW = 2060, KVAR = 1250. What is the fundamental frequency displacement power factor? Which is the closest approximation of total harmonic current distortion (%THD-i) for a six-pulse rectifier with an effective source impedance of ? A non-linear load has fundamental frequency displacement power factor of 0.90 and harmonic current distortion of 16%. What is the Total Power Factor associated with this load? What is the effective input impedance for a system consisting of a 2.75MVA transformer, 5.75% and a non- linear load of 1250kVA? A three phase, 2000 KVA transformer has a 480 volt secondary and nameplate impedance of 5.12%. What is the short circuit impedance (Zt), in ohms, for this transformer? What are the first (lowest) four harmonics expected for a 3-phase, 6, 12 or 18 -pulse rectifier? What size (copper) grounding electrode conductor would you use if the service phase conductors La * Typical input PF of a VFD A three phase transformer has reactance of 0.01000 ohms (at 60hz). What is its inductive reactance (X) at Cal the 5th harmonic (300Hz)? A three phase transformer has reactance of 0.001100 ohms (at 60hz). 7th harmonic current in each phase is 50 amps. What is the 7th harmonic voltage (L-L) at the transformer secondary? Nr Two loads are supplied by a transformer. One is a linear load drawing 600 amps. The other is a nonlinear load drawing 100 amps at 43% current distortion. What is the total harmonic current distortion at the transformer secondary (PCC)? How do you design a 5th harmonic filter, A circuit contains an inductance of 0.155mH and capacitance of 1250uF. What is the resonant frequency of this circuit? A capacitor rated 100kVAr is connected to a system that is supplied by a transformer rated 1250kVA, 5.75% impedance. How much will this capacitor boost the voltage (as a percent of system voltage)? If the available short circuit current is 27kA and the load (demand) is 1087 amps, what is the IEEE-519 recommended limit for harmonic current distortion?
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

This question has not been answered.

Create a free account to get help with this and any other question!

Related Tags