3. Calculate the capacitance of a 3-phase transmission line equilaterally spaced at 6m if conductor diameter is 500 mils.
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- a) The conductor shown in the figure below is composed of five strands. The diameter of each strand is 2.5 mm. Find the GMR (Geometric mean radius) of the conductor. b) The distance between conductors of a single-phase line is 3 m. Each conductor is composed of five strands as shown above. Find the inductance of the line.2.5 A 3-phase single circuit bundled conductor line with two sub-conductors per phase has horizontal spacing with 6.1 m between the centre lines of adjacent phases. The distance between the sub- conductors of each phase is 30.5 cm and each sub-conductor has a diameter of 2.54 cm. Find the inductance per phase per km. [0.988 mH]A single core lead covered cable is to be designed for 68 kV(peak value) toearth. Its conductor diameter is 2 cm and its three insulating materials havepermittivities of 5, 4 and 3 respectively with the corresponding maximumsafe working stress of 38 kV/cm (r.m.s), 26 kV/cm (r.m.s) and 20 kV/cm(r.m.s) respectively. Find the minimum diameter of lead sheath.
- -2. A 3-phase, 132 KV, 50 Hz, 100 Km, single circuit bundle conductor transmission line as shown in the figure below. If the diameter of each strand is 1 cm, and the conductors are regularly transposed . Determine , the capacitance to neutral per phase per Km. 6 m 5m 0.18 m 14A single-phase transmission line consisting of two conductors, the radius of each conductor is 0.4 cm, the distance between the conductors is three and half meters and the height above ground is eight 1-The capacitance in uF/km without effect of ground is 2-The capacitance in pF/km with effect of ground isA single-phase transmission line consisting of two conductors, the radius of each conductor is 0.4 cm, the distance between the conductors is three and half meters and the height above ground is eight meter. Determine 1)The capacitance in uF/km without effect of ground 2)The capacitance in uF/km with effect of ground
- For the Figure 7 shown: A 395 -km long, 34 Hz, three-phase, 3-wire, transmission line is composed of stranded conductors in each line with GMR of 16.66 -mm. If the distance D in the figure is 2.22 m., What is inductive reactance per line in (ohm)? Figure 7 'O b 1.8D 2.4D 3.2D 0(a) A three phase transposed transmission tower comprises of three-bundled conductor and double-circuit configured in vertical position as shown in Figure 2. Each sub-conductor in each circuit and each phase is an ACSR type, size 477,000 cmil and stranding 26/7. Given the GMR of each sub-conductor is 0.8809 cm and diameter is 2.1793 cm, analyze: i. Inductance in mH/km ii. Capacitance in µF/km 0.75m 7.5m b' 4m 4m 45cm Figure 2Derive the equation of Capacitance per phase for the 3-phase double circuit line with hexagonal spacing. (transposition of conductors is not required)
- For the Figure 6 shown: A 441 -km long, 59 Hz, three-phase, 3-wire, transmission line is composed of stranded conductors in each line with GMR of 12.33 -mm. If the distance D in the figure is 3.24 m., What is inductance per line in (mH)? Figure 6 o 1.732D 1.732D ⒸA. A single-phase transmission line is composed of two solid round conductors having aradius of 0.45cm each. If the conductors are spaced 3.5m, calculatea. the value of the inductance per conductorb. the inductance of the lineB. A 15-km, 60Hz, single phase transmission line consists of two solid conductors, eachhaving a diameter of 0.8cm. If the distance between conductors is 1.25m, determine theinductance and reactance of the line.In a single-phase transmission line circuit, three 0.25 It consists of a conductor with a radius of cm (a, b, c). The return circuit likewise consists of three parts of the same radius. consists of two conductors (d, e, f). of conductors placement is given. of each conductor Calculate the inductance and the total inductance.