|
|
|
|
|
Save hours of tedious hand calculations and take the guess-
work out of short circuit analysis by automating the process with multiple calculation and result analysis tools within ETAP.
The Short-Circuit module makes it easy to go from selecting elements from the comprehensive libraries of short circuit current ratings to performing dozens of different types of short circuit analysis with the purpose of finding the worst-case device duty. Built-in intelligence allows it to automatically apply all ANSI / IEEE or IEC factors and ratios required for high- and low-voltage device duty evaluation. |
| |
|
Determine fault currents and automatically compare these values against manufacturer short circuit current ratings. Overstressed device alarms are automatically displayed on the one-line diagram and reports.
OTI closely monitors industry standards and OEM data to ensure ETAP is always up-to-date. The Short-Circuit module seamlessly integrates with device coordination and performs arc flash hazard calculations. |
|
|
|
Alert View: Easily view marginal and
critical alerts |
|
|
|
|
| ANSI and IEC standards are used for calculating short circuit current for parts of the network below main panels, subpanels, UPS, and phase adapters. Device duty calculation compares the calculated fault current from these networks for evaluation of protective devices and automatically generates critical and marginal alerts based on user-defined alarm limits. |
|
|
| |
|
- Automatic 3-phase device evaluation
- Device evaluation based on total or maximum through fault current
- Automatically adjust conductor resistance & length (both lines & cables)
- Global or individual device impedance tolerance adjustments for maximum & minimum fault currents
- Include / exclude fault impedance modeling for unbalanced faults
- Include / exclude shunt admittance for branches & capacitive loads (unbalanced faults)
- Graphical or tabular bus fault selections
- Automatically determine fault currents at motor terminals without the need to add additional buses
- Phase-shifting transformers
- Grounding models for generators, transformers, motors, & other loads
- Motor contribution based on loading category, demand factor, or both
- Extract manufacturer published data from the libraries for thousands of devices
|
 |
|
| |
|
- 1-phase & panel systems device evaluation
- Determine maximum & minimum short circuit fault currents
- Calculate ½ cycle, 1.5–4, & 30 cycle balanced & unbalanced faults (3-phase, L-G, L-L, L-L-G)
- Check momentary & interrupting device capabilities
- Check closing & latching capabilities
- Evaluate symmetrical or total rated circuit breakers
- Special handling of generator circuit breakers for system & generator faults
- Interrupting duty as a function breaker contact parting time
- Standard & user-definable contact parting time
- Automatically includes No AC Decay (NACD) ratio
- User options for automatic adjustment of HVCB rating
- HVCB & Bus momentary duty
|
| |
|
| IEEE C37.04 |
Standard Rating Structure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current including Supplements: IEEE C37.04f, IEEE C37.04g, IEEE C37.04h, IEEE C37.04i |
| |
|
| IEEE C37.010 |
Standard Application Guide for AC
High-Voltage Circuit Breakers Rated on a Symmetrical Current |
| |
|
| IEEE C37.010b |
Standard and Emergency Load Current-Carrying Capability |
| |
|
| IEEE C37.010e |
Supplement to IEEE C37.010 |
| |
|
| IEEE C37.13 |
Standard for Low-Voltage AC Power Circuit Breakers Used
in Enclosures |
| |
|
| IEEE C37.013 |
Standard for AC High-Voltage Generator Circuit Breakers Rated on a Symmetrical Current Basis |
| |
|
| IEEE C37.20.1 |
Standard for Metal Enclosed Low-Voltage Power Circuit Breaker Switchgear |
| |
|
| IEEE 399 |
Power System Analysis – the Brown Book |
| |
|
| IEEE 141 |
Electric Power Distribution for Industrial
Plants – the Red Book |
| |
|
| IEEE 242 |
IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems – the Buff Book |
| |
|
| UL 489_9 |
Standard for Safety for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit Breaker Enclosure |
|
| |
|
- Load terminal fault current reporting
- Automatically flag marginal & critical overstressed devices
- Individual fault current contributions for Isym, Ia, & 3I0
- Phase & sequence voltage profiles (Va, Vb, Vc, V1, V2, & V0)
- Phase & sequence current profiles (Ia, Ib, Ic, I1, I2, & I0)
- Phase & sequence impedances
- Alert view to display critical & marginal limit violations
- Export one-lines with short circuit results to third party CAD applications
- Input data, detailed individual & total short circuit contributions, & summaries
- Enhanced state-of-the-art graphic display of results for balanced & unbalanced faults
- Export output reports to your favorite word processor or spreadsheet
- Full color customizable Crystal Report® viewers
|
|
Reporting: Load terminal fault current reporting |
|
|
|
|
|
|
|
|
|
|