Short Circuit Study

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These short circuit studies are performed using power system software as per IEEE standards. For larger systems, these short circuit calculations to be performed for both switchgear ratings and relay settings. Knowledge of the computational methods of power system analysis is essential to engineers responsible for planning, design, operation, and troubleshooting of distribution systems. A short-circuit study is an analysis of an electrical system that determines the magnitude of the currents that flow during an electrical fault. Comparing these calculated values against the equipment ratings is the first step to ensuring that the power system is safely protected. Once the expected short-circuit currents are known, a protection coordination study is performed to determine the optimum characteristics, ratings and settings of the power system protective devices.

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Using ETAP software we can perform short circuit studies on electrical systems in a quick time and effective manner in four steps.

• Data Collection and SLD Preparation

• Short circuit calculations

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Benefits of Short Circuit Analysis 

• Helps avoid unplanned outages and downtime

• Is critical for avoiding interruptions of essential services

• Reduces the risk of equipment damage and fires

• Increases safety and protects people from injuries

• Determines the level and type of protective devices that are needed

• Provides the information needed for NEC and NFPA required labels 

• Keeps you in compliance with NEC requirements 

• Reduces the risk a facility could face and help avoid catastrophic losses

• Increases the safety and reliability of the power system and related equipment 

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