Power Factor Meter

The main points power factor meter

Let us know its definition:

Definition: The power factor meter measures the power factor of the transmission framework. The power factor meter chooses the types of weights to be used on the line, and it also detects the difficulties on it.

power fector meter
power fector meter
volt and ampere meters 


 The power factor of a transmission line is calculated by subtracting the end result of voltage and current with power. Apart from this, different voltage currents and power are estimated by voltmeter, ammeter, and wattmeter.

The factor of distance on the meter

Stick distances are measured on the miter, yet this requires a great deal of speculation. The force factor of a transmission line varies with time and time and its form varies from time to time. Observing results rapidly is fundamental. The power factor meter gives quick observation yet this work is less accurate. The information obtained from a power factor meter is sufficient for some reason to expect an accuracy test.

A power factor meter has a moving framework called a pointer that corresponds to two conflicting powers. Thus the pointer of the power factor meter remains in the same position it is involved in at the time of disconnection.


Some Important Types of Power Factor Meter

 There are two types of force multiplier meters. They

 1. Electrodynamics

     a. single-phase elector dynameter

     b. Three Phase Electrodynamics


2. Moving Iron Type Meter

   a. rotating ferromagnetic field

   b. Number of optional fields


Here we are sharing different types of power factor meters with you:

Single Phase Electrodynamics Power Factor Meter

 The evolution of single-stage electrodynamics you see in this figure below. The meter has a fixed loop that moves as the current curls. This curl is divided into two sections and expresses the current under test. The attractive area of ​​the circle is actually comparing the current course through the curl. 

power fector meter
power factor meter 

 The meter consists of two different weight loops A and B. Weight curl A has no inductive impedance in arrangement with the circuit, and loop B has a deeply inductive loop in arrangement with the circuit. The current in loop N is in phase with the circuit while the current in the curl blab is about 90º ---| is equal to. The attachment of the moving loop is through silver or gold tendons that limit the controlling torque of the moving framework.

 The meter has two diverting torques in which one follows the curl A and the other is on the loop B (a and b). The windings are orchestrated to the point that they are reversed into the bearings. The pointer is in equilibrium when the torques are equal.

The refraction torque at curl A is given as -a precise turn from the plane of reference.

 max - The largest estimate of inductance shared between curls. 

The subsequent redirection torque on curl B is communicated as

 The redirecting torque is operating clockwise on the heading.

The largest shared inductance is estimated to be equal between the two redirection conditions.


This torque performs in the enemy of clockwise heading. The above situation shows that the avoidance torque is equal to the staging point of the circuit.

The various types of power factor meters are clarified underneath in detail.


 Let us now know about three-phase electrodynamics. 

Three Phase Electrodynamics Power Factor Meter

The evolution of the three-phase meter is visible in the figure below. Electrodynamics is just valuable for the proper burden. The moving curl is placed on the side of 120º. They are connected in different periods of the flexible circuit. There is a progression of opposites in both curls.


The voltage over the curl N is V12 and across it is IA1. The circuit of the loop is resistive, and consequently, the current and voltage are in phase with each other. Similarly, voltage V13 and current IB1 are in phase with each other.



- Precise redirection from the bottom of the reference.


The torque coming on loop A is the torque following on the curl B, the torque TA and TB acting on opposite heads. In this way, the precise avoidance of the loop is directly relative to the phase point of the circuit.



Running Iron Power Factor Meter

 The moving iron instrument is divided into two classes. They are attractive areas for some exchange areas.


a. Turning Field Power Factor Meter - The fundamental components of the attractive field power to come next. The power factor meter has three fixed curls, and their tomahawk 120º crumple to each other. Tomahawks crossing each other. The curls are flexibly connected to the three phases with the help of current transformers.


P is the fixed curl connected in arrangement with the high resistor circuit in steps 2 and 3. There is an iron chamber across the loop P. Two iron vanes are fixed to the chamber. Axles also bring damping vanes and pointer.


The phase or chart of the power factor meter is shown in the figure. The all-out torque of the meter is zero to avoid the constant condition.


Curl P and the iron chambers generate the substitution transition which is coupled to the motion of the fixed loop. The connection of the loop forms the moving framework which fixed the stage edge of the current. The vanes of the power factor meter are polarized by the moving curl current which is in stage with the framework line voltage.


Benefits of Shifting Iron Power Factor

1. The meter requires a huge working power as opposed to an electrodynamics type meter.

 2. The curls of moving iron tools are fixed forever.

3. The scope of the scale reaches 360º.

4. The development of the meter is hearty and basic.

5. The moving iron instrument is modest when contrasted with the elector dynamic meter.

Disadvantages of moving iron tools

 1. Misfortune happens in a metered piece of iron. Bad luck depends on the repetition of the stack and the meter.

2. The meter has low precision. 

3. The meter's adjustment is gracefully affected in light of variations in frequencies, voltages, and ripples, etc.

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