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Showing posts from August, 2021

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

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.  

FEELER GAUGES - THICKNESS GAUGES & ACCURACY

  Feeler Gauges or Thickness Gauges This instrument is mainly designed  for gauging (measuring) the width of the narrow gaps. Its range is mainly the standard specify the 0.03 mm  to 1 mm. Each leaf are marked with its thickness and also each leaf is detachable, if user is required. Commonly seen blades sets are given below Serial No. No of Blades in a set Thickness of blades in mm 1 10 0.05 to 0.20 in steps of 0.05   0.30 to 0.08 in steps of 0.10 2 13 0.05 to 0.30 in steps of 0.05  0.40 to 1.00 in steps of 0.10 3 13 0.03 to 0.10 in steps of 0.01, and 0.15,0.20, 0.30, 0.40 and 0.50 4 20 0.05 to 1.00 in steps of 0.05 Specification of Material of the blade The material is suitable  to made the blade is stainless steel shall be hardened and tempered to a hardness of not less than 400 HV and not mo

HOW TO CONSTRUCT A GAUGE BLOCK STACK

1. For getting the required length select a possible a few gauge blocks. 2. First select a least significant gauge block, then work back through more significant digits until the required length is attained. 3. Reduce the wear as much as possible, don't always use the same gauge blocks. How to create a gauge block  Stack of  length 30.6785 mm Use 88 block metric set 1.0005 1.008 1.17 7.5 20 Total 30.6785    How to create block Stack of 1.8761" Using 81 block inch set 0.1001 0.126 0.65 1 Total 1.8761"