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A phase current is the current passing through a phase, whereas a line current is the current flowing through a line.
In the case of a balanced delta-connected load, IL = 1.732 IP. In the case of a balanced star-connected load, IL = IP.
For unbalanced loads, these relationships don't hold true, and must be individually calculated.
What else can I help you with?
What is the difference between axial in-line fans and centrifugal inline fans?
Axial fans are like a propeller - like most domestic fans. Centrifugal fans are like water or paddle wheeels that sit inside a case. Instead of water turning them, the wheel is driven by the motor and that moves the gas. In-line merely means that the fan sits in the gas flow.
What is Difference between relief valve and safety valve?
Relief valve always position in the suction line in oreder to relief the extra pressure, while safety valve is always placed at discharge line to release excess pressure.I would take that one step further by stating that a " RELIEF VALVE" is one that is "meant" to be lifted off its seat, as opposed to a "SAFETY RELIEF VALVE" which is not!DIFFERENCE BETWEEN RELIEF VALVE AND SAFETY VALVE:1. Releif valve is applicable in the fluid system.safety valve is applicable in the gaseous system.2.Relief valve opening is directly proportional to the pressure rise.Safety valve opening is will happen at after reaching the setpressure.3.Mode of relif vlave line is again connected to the suction.But in the safety valve is just vent-out there is no connection tosuction.
What is the difference between tangential and radial acceleration?
Answer Both refer to an object that is in a cirular motion. Radial Acceleration is a velocity change of the object as it moves away from the center of rotation. Tangential Velocity is a change of velocity of the object as it moves in a line that is tangential to the circular path it is moving.
What is stagger angle?
The angle between chord line and turbine axial direction ( also known as setting angle)
What is camber is eot crane?
The height of the center point of the girder compared with the straight line between the two end points.
What is the difference between Load Current Line Current and Phase Current?
A load current is a current drawn by an electrical load. In other words, it is the current flowing from the source to the load.For a single-phase system, a line current is a current flowing through the line, or 'hot', conductor, while the current through the neutral conductor is called the neutral current.For a three-phase system, the three 'hot' conductors between the load and the source are called 'lines' and, so, the currents passing through them are called 'line currents'. For a three-phase system, loads are either connected between line conductors (delta-connected system) or between each line and the neutral (star- or wye-connected system), and represent the phases -so the currents passing through the loads are called 'phase currents'.For a balanced three-phase system, the line current is 1.732 times the value of a phase current, where the phases (loads) are connected in delta. For phases (loads) connected in star (or 'wye') the line current is numerically-equal to the phase currents.
What is a line to line voltage?
In a 3 phase system, the voltage measured between any two phase is called line to line voltage.And the voltage measured between line to neutral is called phase to neutral (line to neutral) voltage.AnswerThere is no such thing as a 'phase-to-phase' or a 'phase-to-neutral' voltage. The correct terms are 'line-to-line' and 'line-to-neutral'.The voltage between any two line conductors is called a line voltage.In a three-phase, three-wire, system, the line voltage is numerically equal to the phase voltage.In a three-phase, four-wire, system, the voltage between any line conductor and the neutral conductor is called a phase voltage. The line voltage is 1.732 times larger than the phase voltage.
Why line current is greater than phase current in delta connection?
Because if you apply Kirchhoff's Current Law to the junction between the line current and the two phase currents, the line current is the phasor (vector) sum of two phase currents. For a balanced load (only), this works out to 1.732 x phase current.
What is phase current?
A phase current is the current passing through a phase, whereas a line current is the current flowing through a line.
What happens when phase to phase line is connected?
If there is a voltage differential from phase to phase, and a conductance (inverse of resistance) between them, then current (amperes) flows. This is no different than phase to neutral, i.e. voltage across conductance generates current, (I = EC, or I = E/A) except that neutral current is zero in a true phase to phase connection.Note that phase angle is always relative. In phase to neutral, it is relative to (typically) neutral; while in phase to phase, it is relative to the other phase. By Fourier Analysis, the difference between two phases of the same frequency, but of different phase angles, is still a sine (or cosine) wave. Also, by Kirchoff's Current Law, (implied, and I will (sort of) not repeat it here), current entering from one phase and equally leaving via another phase will not reflect at all in the neutral conductor.The simple answer is that connecting phase to phase is a short circuit, just like connecting phase to neutral.CommentThere is no such thing as 'phase to phase' or 'phase to neutral'. The correct terms are 'line to line' and 'line to neutral'.
Is the full load current rating of a 3 phase motor referring to amps per phase?
NO, ONLY ONE. If you are measuring line current. The purpose of the line to line measurement is to know if your load is drawing balance ampere and slight difference is negligle.
How do you measure voltage in a 3 wire single phase system?
For a three-phase, four-wire, system, the line voltage is measured between any pair of line conductors, while the phase voltage is measured between any line conductor and the neutral conductor. For a three-phase, four-wire, system, the line voltage is numerically-equal to the phase voltage, and both are measured between any pair of line conductors.
How do you convert line current to phase current?
The current is the same in the three live wires. The voltage can be described as the line voltage (phase to neutral) or the phase voltage (phase to phase) which is larger by a factor of sqrt(3). So a line voltage of 230 v corresponds to a phase voltage of 400 v.
What is the difference between power factor and power booster?
Power factor is well defined and measures the difference between the phase of current and voltage. It varies from 1 to zero with 1 being associated with a pure resistive load. Since you multiply voltage times current to compute instantaneous power; if they are out of phase then you get reduced power. A power booster, in this context, would be a device that was designed to compensate for the our of phase situation and bring the phases more in line, effectively boosting power.
In delta connection what is formula for phase current?
Line current = 1.732 x Phase CurrentCommentOnly for balanced loads.
Difference between line transformation ratio and transformation phase ratio?
line transformation ratio would be the turns ratio (ie voltage ratio), while the phase transformation ratio is most probably the phase shift introduced by a 3 phase transformer.
What is the difference between a differential circuit breaker and a circuit breaker?
A circuit breaker is a device that opens its contacts in order to open the circuit in case of current overload. A differential circuit breaker is a device that opens the circuit in case of leakage (current measured on the phase line is differentthan the current returned to neutral line); therefore protects users from electric shocks.To more understand how it operates, consider the following:Say that your electrical wall outlet is connected to a differential breaker. When plugging let's say a hair dryer to it, the current traveling on the phase line (going into the hair dryer and out to the neutral line of the wall outlet) equals but in reverse direction of the current returned to the neutral line, thus the difference is zero. Now let's say this hair dryer got faulty and fraction of the current coming from the outlet phase line travels through your body and return to earth (considering that you are not electrically isolated from the ground). Thus the current in neutral line is less than the current on phase line; at this moment the difference is not zero and breaker opens to protect you from getting electrocuted.
