# transformer sizing calculation excel

1-Applicable : this will open a new calculation file. To delete a line/ harmonic order magnitude: Hold down control and click. Transformer Secondary Current (Is) =1342.70Amp and impedance is 5%, As per above table in not supervised condition Size of Circuit Breaker= 125% of Secondary Current, Size of Circuit Breaker = 1342.70 x 125% =1678Amp, Size of Circuit Breaker on Secondary Side, Size of Circuit Breaker on Primary side of Transformer as per NEC 450.3, Size of Fuse on Primary side of Transformer as per NEC 450.3, Size of Circuit Breaker on Secondary side of Transformer as per NEC 450.3, Size of Fuse on Secondary side of Transformer as per NEC 450.3, Electrical Panel Load Calculations Excel Sheet, Calculate No of Fixtures / Lux for Indoor Lighting, Excel Calculator For Power Factor Correction, Total HVAC Calculations in One Excel Sheet, BOQ Bill of Quantities and Cost Sheets for MEP Projects Excel Sheet, HVAC Spreadsheet Calculations and Free Psychrometric Software Excel Sheet, HVAC- Load Calculation Check Least (Based on the AIRAH Handbook 3rd Edition), Linx Duct Friction Calculator Excel Sheet, ASRAE 90.1 Kadj Calculation Tool Excel Sheet, Residential Load Calculations Spreadsheet, HVAC- HEAT RECOVERY AIR HANDLING UNITS CALCULATION Excel Sheet. Calculate Total Capacitive charging current (It). Calculate Required Resistance value at secondary side (Rsec). demand load (kW) Power factor after correction; Transformer type; Permissible loading percentage (%) here are some examples for using this calculator to find K-Factor: here are some examples for using this calculator to find Factor K: Leave a comment to help all for better understanding. BILL OF QUANTITY -... An electrical panel is also called a load center. explain the following points to show how this program can be used in the Enter values in yellow cells only. Max Rating of Over current Protection for Unsupervised Transformer More than 600 Volts (As per NEC), Max Rating of Over current Protection for Supervised Transformer More than 600 Volts (As per NEC), Max Rating of Over current Protection for Transformers Primary Voltage Less than 600 Volts (As per NEC), Size of Fuse / Inverse Time C.B as per NEC (Amp), Transformer Primary Current (Ip) =52.49Amp and impedance is 5%, As per above table in not supervised condition Size of Circuit Breaker= 600% of Primary Current, Size of Circuit Breaker = 52.49 x 600% =315Amp. Calculations Spreadsheet consists of two parts: First part: Transformer Rating Calculator. Click on “Follow" in bottom of the home page, below the images of our members. Distribution Transformers sizing calculations. Could you please let me know, the book of this sheet. Click above if you wish to include X/R ratios and better Utility information. Non-registered members in Also, you will find option to select between: : thus will take you to a new window of the K-Factor directory where you can change an existing calculation file or save a new calculation file. cells will be calculated. used to calculate basic ratings of power and distribution transformers, the selection Introduction 2. From the start menu, click on the file KFC.exe to open it. File Size: 552 Kb In fluid flow, friction loss (or skin friction) is the loss of pressure or “head” that occurs in pipe or duct f... What is ASHRAE Standard 90.1 ? File Size: 2.66 Mb Description of Heat Recovery Air Handling Units Calculation 1- This spreadsheet calculates air flow and ba... www.engineeringxls.com © 2019 All rights reserved.. familiar with the contents of our new articles about the. Other Power and Transformer is in unsupervised condition. calculation of K Factors. Transformer Rating Calculator. part: Transformer Harmonic Calculator, K-Factor is calculated on RLA, FHL-Factor on rated FLA, Use 100 amps for per-unit, otherwise use measured loads, For Fifth Harmonic current, Use 1/7th of RLA for VSD drives, For Seventh Harmonic current, Use 1/7th of RLA for VSD drives. GE Transformer & Short Circuit Calculator Transformer Calculations without X/R and Utility Impedance Choose from the drop down menue or fill in the blnk were required. Because I see (Depends on circuitry, refer book Pg 196) . Simple theme. Here we will study the programs and excel spreadsheets used for calculation of K-Factor/Factor K used in sizing transformers with non-linear loads, these programs and excel spreadsheets are: ... 2- Transformer Calculations Spreadsheet . Transformer Design and Sizing Excel Sheet Calculator, Determine wire size according to SWG or AWG Table, Determine window area according to SWG or AWG Table. Transformer sizing. In the new calculation file you can select between calculating K-Factor according to the US standards or Factor K according to the European standards. users should verify that the results are valid for their particular 3-Applicable Sizing Power and Distribution Transformers, Resources

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