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SmartDuty™

SmartDuty™ is the world's first Expert System for the verification of breaker, switch, and fuse duties. SmartDuty™ applies the appropriate short circuit calculation to each device, then compares the calculated currents with the rated duties. Underrated devices and devices within a user-defined threshold are highlighted on the one-line showing the percentage overduty next to each device. Devices within tolerance are not highlighted.

SmartDuty™ calculates the maximum current through the line side and load side of each device for comparison. This eliminates the costly and time consuming problem of standard bus faults not properly accounting for branch contributions.

Note: The ability to automatically check equipment duties during analysis is only available if you have purchased the SmartDuty™ option to EasyPower.

To use SmartDuty™, click Equipment Duty in the ribbon. Fault any or all buses, and the results appear next to each underrated device.

Figure 1: SmartDuty™ One-line Results

Duty Evaluation for Various Equipment

HV Breakers

Peak Making Capacity with Peak Current

Breaking Capacity (ac symmetrical) with Equivalent Breaking AC current

LV Breakers

Breaking Capacity (ac symmetrical) with Equivalent Initial AC current

 

Fuses

Breaking Capacity (ac symmetrical) with Equivalent Initial AC current

 

Switches

Making Capacity (ac symmetrical) with Equivalent Initial AC current

 

More Information

IEC Short Circuit Reference  
Setting the Short Circuit Method  
Short Circuit Options (IEC)  
     

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Help was last updated on 2/8/2016