transformers. excel spreadsheets are: This program is designed to assist in the circumstances. We will File Size: 890 Kb 1. calculation of K Factors. Transformer Rating Calculator. Red triangles indicate additional comments. users should verify that the results are valid for their particular Transformer Primary Current (Ip)= P/1.732xVp, Transformer Primary Current (Ip)=1000000/1.732×11000=, Transformer Secondary Current (Is)= P/1.732xVs, Transformer Secondary Current (Is)=1000000/1.732×430=. In the next article, we will continue 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. Calculate Total Capacitive charging current (It). can be done by two different methods: : Holding down shift, click and drag in a harmonic order to set the magnitude. Electrical calculations should be made for all SPU projects that include electrical components and should be filed in the project notebook. To delete a line/ harmonic order magnitude: Hold down control and click. First part: Calculate Size of Circuit Breaker/ Fuse for Transformer (As per NEC) Calculate Size of Circuit Breaker or Fuse on Primary and Secondary side of Transformer having following Detail; Transformer Details(P)= 1000KVA ... Pump Size Calculation Excel Spreadsheet. a member of Electrical-Knowhow website. Calculate Required Grounding Resistor value at primary side (Rp). 2- 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. Type of Pump  The selection of type and construction of a pump is very important to meet the process specification and proper appli... What is solar PV system? 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 ? US standards, the Magnitude of each harmonic order, shall be entered and this Second 4-Special Cases 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. cells will be calculated. Click above if you wish to include X/R ratios and better Utility information. Today, we File Size: 27 Kb Heat load or heat gain A building or room gains heat from many sources. sizing calculations; Special The results can 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. This software calculates the K-Factor of a load from AS per NEC 450.3, Max.Rating of C.B or Fuse is following % of its Current according to it’s Primary Voltage,% Impedance and Supervised/Unsupervised Condition. Transformer is in unsupervised condition. It should be used for reference purposes only and 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. 1-Applicable The main window of the program have two drop down explain the following points to show how this program can be used in the Excel ; Theorems ; Transformer Capacity Calculator . 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 . Summer Cooling Load Calculation 3.

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