| Arc Flash, Short Circuit Analysis |
Arc Flash Analysis
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COMPANY PROFILE:
By providing on-line and PC based software for Short Circuit and Arc Flash Hazard Analysis, ARCAD INC. helps create a safer working environment for individuals who service electrical systems. ARCAD service includes resources and convenient tools that allow facility managers to perform short circuit incident energy, arc flash protection boundary, level of personal protection equipment (PPE) calculations, and to create customized arc flash warning labels, thus reducing the cost of obtaining compliance with OSHA, NFPA70E, and the new Canadian CSA Z462 standards. Arc Flash and Short Circuit Analysis
ARCAD Online Short Circuit CalculatorDetermining available short circuit fault currents is one of the most important aspects of designing power distribution systems. Short circuits and their effects must be considered in selecting electrical equipment, circuit protection devices, and in carrying out arc flash analysis. The short circuit calculator presented on this web-site is offered to satisfy the need for a convenient, comprehensive method of calculating single and three phase distribution system short circuit fault currents. It is intended for radial and looped low voltage (LV) and high voltage (HV) circuits. The calculator allows users to quickly and easily obtain accurate potential short circuit currents at each node (bus) in a power distribution system.
Arc Flash Online CalculatorWe have developed an easy-to-use and comprehensive online tool for calculating arc incident energy, flash protection boundary and risk category required by NEC when work is to be performed on or near the energized equipment. The calculator takes equipment configuration, gap between electrodes, grounding type, short circuit fault current value and system voltage on input, determines arcing fault current, calculates incident energy, arc flash protection boundary, hazard / risk level at the potential point of fault and creates detailed warning label [more...].
What makes our short circuit calculator different?
The calculator procedure is based on the MVA method for solving industrial power system short circuits. Each component of the power system is assigned an MVA short circuit rating. For example, the short circuit MVA contribution of the motor is equal to its own MVA base divided by its own per unit impedance. The cable or bus short circuit MVA rating is equal to (kV)2 / Z, where kV is the cable line voltage and Z is cable impedance. To use the short circuit calculator:Briefly review the examples and frequently asked questions to see the procedure in action, and to learn the resource capabilities. Create an account if you don't already have one, and log onto the page where you can add components one by one to build up a radial electrical distribution system. The components can be a power source, transformers, bus ducts, cables, motors and generators, or "special" components whereby the user can define his own X and R values for a non-standard device. Short circuit MVA values contributed both by source and the system equipment are calculated for each portion of the system. Your account gives you the advantage of saving the entered system diagram and the ability experiment with other configurations. This is practical for systems with multiple scenarios of interconnections where the system goes through ongoing changes over a period of time. You may continue your analysis without having to re-enter your data from the beginning. More Frequently Asked Questions:
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IEEE 1584 and NFPA 70E based 
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