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| We take the guess-work out of short-circuit studies. It’s as easy as one, two, three…
We automatically apply all ANSI or IEC factors and ratios, compare calculated duties to manufacturer published data, and provide alarms and warnings for overstressed devices.
OTI closely monitors industry standards to ensure ETAP is always up-to-date. The Short-Circuit module seamlessly integrates with device coordination and Arc Flash Hazard calculations. |
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- ANSI / IEEE & IEC Standards
- Transient Fault Analysis (IEC 61363)
- Integrates with Arc Flash-(NFPA 70E-2000)
- Integrates with Device Coordination
- Automatic Device Evaluation
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- Check making & breaking capabilities
- Check closing-latching & interrupting capabilities
- Automatic 2,3,5, & 8 cycle breaker comparisons
- User-specified contact parting time
- Breaking duty as a function of breaker time delay
- Interrupting duty as a function of breaker contact parting time
- Automatically includes No AC Decay (NACD) ratio
- Ith calculation & rating check (IEC)
- Cable temperature adjustment
- User-selected bus faulting (graphical or tabular)
- Grounding models for motors, generators, & transformers
- Motor contribution based upon loading categories
- Fault impedance for line-to-ground faults (ANSI & IEC)
- Option to report breaking duty vs. delay time (IEC)
- Phase-shifting transformers for ANSI unbalanced faults
- Zero-sequence shunt admittance consideration
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- 3 Phase, L-G, L-L, & L-L-G
- Extract manufacturer published data
from the libraries (1000s of devices)
- Compares device ratings with calculated short-circuit values
- Automatically includes all necessary
multiplying factors & ratios
- Automatically adjusts device capabilities
based on the nominal & prefault
voltages
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- IEEE: C37, 141, 242, 399
- UL 489-9
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- 62271, 60282, 61363, 60909, 60947
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- Automatically flag marginal & overstressed
devices
- Fault current contributions (lsym, la, & 3Io)
- Phase& sequence voltage profiles (V1, V2, Vo, Va, Vb & Vc)
- User-defined fault current contribution level
- Input data, detailed contributions, & summaries
- Phase & sequence currents, voltages, & impedances
- State-of-the-art graphic display of results
- Export output reports to your favorite
word processor
- Use Crystal Reports for full color, customizable reports
- Alert view to display critical & marginal
limit violations
- Export one-lines with results to third
party CAD systems
- Transient fault (IEC 61363) plots
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- Adjustable pre-fault bus voltages
- User-definable voltage C factor
- Multiple X/R methods
- Set marginal limits for overstressed devices
- Include overload heaters in calculations
- Optional motor decay includes motor equipment
cables
- Motor contributions based upon loading
categories
- Additional fault impedance for
line-to-ground faults
- Integrates with Arc Flash module
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