Sourcing Wayside HEP Power Systems for Rail Yards


Head End Power Unit Configurations for Passenger Trains

In the late 1990s, the American Public Transportation Association (APTA), implemented practices for Head End Power sources throughout the passenger rail industry.

According to 3.1.3 in APTA RP-R-015-99, Head End Power (HEP) is defined as “A system by which 480 VAC 3-phase electrical power, to operate auxiliaries, is provided to railroad vehicles from a central source via a trainline system. The power source can be locomotive (hence “Head End”), power car, or wayside source.” Read more

8 Quick Tips for Building a Custom Control Panel

ESL’s custom solutions department has an average of 7 years custom control panel experience and are skilled at building control panels & electrical equipment per your specification. ESL’s time-tested procedures minimize confusion during all stages of your project; and along the way we have learned a few things that may help you out. We know your time is valuable so we made a short video with 8 quick tips to help you with your next custom panel project.

For additional help with your project or more information about ESL’s custom control panel capabilities visit our request info page or call 951-739-7000.

Panel Design Considerations Part 2


In part one of our Design Panel Considerations we discussed how to streamline production and meet deadlines.
During the design stage of a panel it is also important to consider key factors to help minimize complications.

First, in order to take a project from design to final build, a panel shop first needs to be provided with a complete and accurate Bill of Materials to ensure the quote is as correct as possible. The quoting process begins with using your BOM to provide you with an accurate quote for your project.

Next, Read more

Custom Panel Design Considerations Part 1

Custom Control Panels

When it comes to designing a control panel, there are many variables to consider in order to ensure the end product is built to expectations, completed on time, and within budget. Over ESL’s 25 years of experience as a custom control panel manufacturer we have learned that the design stage of a panel is critical to the success of a project.

During the design stage of a panel it is important to consider some key steps in order to help streamline production and meet deadlines:

First and foremost, scaling drawings properly ensures components will fit properly where desired and assist in the efficiency of production.

Secondly, a good rule of thumb for building a clean and functional panel is Read more