Arc Flash Program Excel Spread Sheet Calculator 
This Excel file combines arc flash equations from a proposal to NFPA 70E2003 with simplified equations to calculate available fault current. This tool uses methods that have been shown to result in conservative estimates of fault current, which should result in conservative estimates of arc incident energy if appropriate arc fault clearing times are used . 

Starting Motor Voltage Drop Excel Calculator 
Voltage drop caused by the starting of motors at the substation transformer primary and secondary leads. Primary system impedance and transformer impedance is taken into account. 

Electrical Distribution Transformer Spreadsheet Calculator 
Electrical Distribution Transformer Spreadsheet Calculator. This excel spreadsheet will calculate a number of variables required to properly size a transformer. Primary voltage, secondary voltage, maximum demand load (kW), over current protective circuit breaker... 

Minimum Insulation Resistance Excel Calculator 
Determine the following:
Calculate minimum Insulation Resistance Value for Various Electrical Equipment
Calculate IR Value of Electrical Equipments
Graph of IR Value
Calculate Polarization Index Value with Graph
Calculate Earth Resistivity 

