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How do you solve for phase angle?
The phase angle ϕ is then given by ϕ = tan−1 [(Xc – XL)/R]. Note that if XL = 0, meaning that there is no inductor in the circuit, then we arrive at the solution we obtained for the RC circuit.
How do you calculate initial phase?
The initial phase is φ = arcos [x(0) /A] and further φ = arcos(– / 2). Two angles correspond to these phases φ1 = (5π/6) and φ2 = (7π/6).
What is the formula of power in 3-phase?
P = √3 × pf × I × V This simply states that the power is the square root of three (around 1.732) multiplied by the power factor (generally between 0.85 and 1, see Resources), the current and the voltage.
What is the initial phase in SHM?
Initial phase in Simple harmonic motion: The phase of a vibrating particle corresponding to time t=0 is called the initial phase or epoch. Initial phase is determined when the time period, t=0.
What is meant by initial phase?
Initial Phase means the first phase of the Facility, which shall include the facilities described in the Initial Scope of Work. The Initial Phase shall be designed and constructed so that it will be an integral part of the Final Scope of Work.
Which is the phase difference between voltage and current?
The fraction of a period difference between the peaks expressed in degrees is said to be the phase difference. The phase difference is <= 90 degrees. It is customary to use the angle by which the voltage leads the current. This leads to a positive phase for inductive circuits since current lags the voltage in an inductive circuit.
How to calculate the current of a three phase system?
For example, take a 400 V (V LL) three phase system with the following loads: phase 1 = 80 A, phase 2 = 70 A, phase 3 = 82 A Similarly given the power in each phase you could easily find the phase currents.
When does a phase shift occur in an inductor?
However, when you introduce inductance or capacitance, a phase shift occurs and the phase angle depends on the amount of inductive and capacative reactance. When AC current flows through a pure inductor, the voltage leads the current (current lags the voltage) by 90º.
When do voltage and current peak at the same time?
When capacitors or inductors are involved in an AC circuit, the current and voltage do not peak at the same time. The fraction of a period difference between the peaks expressed in degrees is said to be the phase difference. The phase difference is <= 90 degrees. It is customary to use the angle by which the voltage leads the current.