KVAR RATING CALCULATOR,CAPACITOR BANK SIZE CALCULATION

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  Determination of Required Capacitor Rating by measurement 3 Methods are used. 1. Measurement with current and power factor 2.Measurement with recording of Active and Reactive power. 3.Measurement by Reading Meters . 1 . Measurement with Current and power factor The active power P is calculate from the measured voltage V ,apparent current Is and Power Factor P=√3*Voltage*apparent Current*cosψ *10^-3 If the desired power factor cosψ has been specified, the capacitor power rating can be calculate from the following formula: Qc = P. (tan ψactual - tanψ desired) Let's See the Example Measured Apparent Current Is : 248 Amps Power Factor cos ψ1 = 0.86 Desired Cos ψ2 = 0.92 Voltage V :397 V p=√3 * 397 * 248 * 0.86 * 103 P = 146.6 KW Qc= P. (tanψ actual - tanψ desired) = 146.6(0.59 - 0.42) = 24.9 KVAR
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TRA-5P THREAD ROLL SET NOMINAL VALUE & TOLERANCE OR ACCURACY

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 All the values are inch 


Matched Roll OD to Single Wire


 (Nominal Value )  UUT Value

Measured Value  

Tolerance (±)

0.025900

0.0002

0.025900


0.0002

0.025900

0.0002

0.025900


0.0002

0.025900

0.0002



ROLL #1 OD to Single Wire

 (Nominal Value )  UUT Value

Measured Value  

Tolerance (±)

0.025900

0.0002

0.025900


0.0002

0.025900

0.0002

0.025900


0.0002

0.025900

0.0002

UUT - Unit Under Test

Measured Value is measured by the master Instrument .


Thread Wire is used (0.10329)

Roll OD to single Wire (0.0259)

Before taking calibration Verified these process.

Optical Form Inspection.
Threadform Run out

These are the Some examples of thread role set.




















 



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