Advanced power system studies

Eaton offers a comprehensive portfolio of advanced power system studies. Our portfolio far exceeds the average list of analysis and studies you’ll see from other study providers.

Utility studies

Eaton’s range of advanced electrical system studies offer utilities the most focused and systematic approach to system changes, enabling you to enhance power system performance and identify potential problems before they impact your system.

Go beyond the study to find the right arc flash solution for your facility

Eaton combines industry-leading products, services and expertise to create a total arc flash solution focused on prevention, protection and preparation. From analysis to detailed recommendations to mitigate arc flash hazards, we help you Reset Safety in your facility by improving system design and safety practices with the latest arc flash-related standards - from IEEE 1584 to NFPA 70E among others.

A practical application of IEEE STD 1584-2018

This white paper discusses how incident energy and arc-flash boundary are affected by electrode configuration, enclosure size and bus gap.

Understanding the effect of electrode configuration on incident energy and arc-flash boundary

This white paper discusses arcing fault current, incident energy and arc-flash boundary results for each enclosed electrode configuration that challenges the assumption that HCB will always yield the worst-case incident energy and arc-flash boundary.

For this study, typical conductor impedances based on IEEE Std. 141-1993 are utilized, with transformer design impedances used when test impedances are not available. The study includes:

• Calculation methods and assumptions
• Selected base per unit quantities
• One-line diagram of the system being evaluated
• Source impedance data, including electric utility system and motor fault contribution characteristics

A calculation of short-circuit momentary and interrupting duties for a three-phase bolted fault is made for the following locations:

• Electric utility’s supply termination point
• Incoming switchgear
• Unit substation primary and secondary terminals
• Low voltage switchgear
• Motor control centers
• Standby generators and automatic transfer switches
• Branch circuit panelboards
• Other significant locations throughout the system

For grounded systems, a bolted line-to-ground fault current study will be provided.  

• Proposed protective device coordination time-current curves will be displayed on log-log
• Included on each curve sheet will be a complete title and one-line diagram with legend identifying the specific portion of the system covered
• The device characteristic curves will be terminated at a point reflecting maximum symmetrical or asymmetrical fault current to which device is exposed
• Identification of the device associated with each curve by manufacturer type and function, and generated using a commercially available software program