R2 is the resistance connected to the faulty core in ohm
R2 is the resistance of the resistor connected to the sound core in ohm
R1 Distance of fault location (Lx) = R2/(R1 + R2)*(2*L)
= 150 m
Z = √(L/C)
C = L/Z²
C = 50*10⁻⁹/(50*50)
C = 0.02 nF
C = 20 pF
The V-curves of a synchronous motor show relationship between Armature current (Ia) and Excitation current (If).
The Inverted V-curves of a synchronous motor show relationship between power factor (pf) and field excitation (If).
Class B trip curve:
The MCB with class B trip characteristics trips instantaneously when the current flowing through it reaches between 3 to 5 times rated current. These MCBs are suitable for cable protection.
Hence, For 16 A current Type B MCB disconnect fault at 3*16 = 48 A to 5*16 = 80 A.