An overhead line conductor having a parabolic configuration weighs 1.925 kg/m of length. The cross sectio area of the conductor is 2 cm² and the ultimate strength is 8000 kg/cm². The towers are 300 m apart havin difference levels of 15 m. Calculate the sag from the taller tower, so that the factor of safety shall be 5. Assum that ice load is 1 kg/m run and there is no wind pressure.

An overhead line conductor having a parabolic configuration weighs 1.925 kg/m of length. The cross sectio area of the conductor is 2 cm² and the ultimate strength is 8000 kg/cm². The towers are 300 m apart havin difference levels of 15 m. Calculate the sag from the taller tower, so that the factor of safety shall be 5. Assum that ice load is 1 kg/m run and there is no wind pressure.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.51P

See similar textbooks

Similar questions

Match the following: (i) Hysteresis loss (a) Can be redud by constructing the core with laminated sheets of alloy steel (ii) Eddy current loss (b) Can be reduced by the use of special high grades of alloy stl as core material.
Draw three transformers for each of the different three-phase connections. That is, draw three transformers and then make the connection, eg star-star, then redraw three transformers and make another three-phase connection, and so on until all four combinations of three-phase connections are made.
Problem 1 - Series en Parallel AC networks [19] Look at the circuit in Figure 1 and determine the following: (a) Total Admittance. (b) Total Impedance. (c) Total Current (l:). (d) Current (I1) through impedance Z2. (e) Current (12) through impedance Z3. (f) Current (I3) through impedance Z4. (g) Is this an inductive or capacitive circuit? A. B Zs 220V;50HZ Figure 1 (h) Voltage across Z1. (i) Voltage across A and B. G) Voltage across Zs. Z1 = 3 + j5 ohm Z2 = 10 + jo ohm Z3 = 5 + j15 ohm Z4 = 10 – j30 ohm Zs = 20 – j30 ohm Admittance and Impedance in rectangular notation. All currents and voltage in polar notation. Take voltage as reference.
Determine the short-circuit current ISC3,0.4kV for a 3-phase short- circuit fault at F. Give your answer up to 2 decimal in kA but do not enter the unit in your answer. Transformer T1 Transformer T2 Cable C1 Isc3,6.6kV Isc3.0.4kV O + j0.150 F 1 MVA 2 MVA 22/6.6kV 25 MVA fault level 6.6 kV/400V Z=3% 6.6 kV switchboard 400 V switchboard
An ACSR conductor has 54 aluminum stands with each strand diameter of 0.1628 inches. The steel core has 19 strands with a strand diameter of 0.0977 inches. The overall diameter will be: O A. 1.0731 inches O B. 1.5116 inches O C. 2.26 inches O D. None of choices are correct O E. 1.2699 inches
EHV lines often have more than one conductor per phase; these conductors are called a _________.
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
It is decided to use parallel 0000 conductors to supply the load in Question 11. How many 0000 conductors will be needed?
For the system shown in Figure 3.34. draw an impedance diagram in per unit by choosing 100 kVA to be the base kVA and 2400 V as the base voltage for the generators.
Branch - circuit conductors must have an ampacity not less than? Served. A maximum load b minimum load c average load d average 3 phase load
From the following figure, find the number of 10 lateral ties and tie wire if there are 36 columns with cross sectional dimensions of 60 x 90 cm. at 12.00 meters long per column.
Does an open- operation, the kVA rating compared to that of the original thr-phase bank is (a) 2/3 (b) 58 (c) 1