Sign telling readers to expect delays represents delays caused in complying with the ul 508a standard during control panel inspections

UL 508A Standard – 15 Common Pitfalls

As an industrial control panel manufacturer certified to apply the UL Listing Mark, Cates Control Systems applies the UL 508A standard to every electrical control panel we design and build. With over 40 years of experience in panel fabrication, we have seen a lot of …

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An example of a control panel compliant with the UL-508A standard for industrial control panels

UL 508A Standard for Industrial Control Panels

Do you know the purpose of the UL 508A standard for industrial control panels and the key topics it covers? This post explains the intent of UL 508A and summarizes the major sections of the standard. Additional topics covered in this post include: The UL …

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The Wraptor wire cutting machine is an example of the investment a control panel manufacturer makes in specialized machinery

Control Panel Manufacturer or Panel Shop?

When evaluating control panel fabricators as possible manufacturing partners for industrial control panels, it is important to note that a fabricator can fall into one of two distinct categories: 1) Control panel manufacturer or 2) Panel shop. There are key differences between the two categories …

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Cutaway View of Mechanical Torque Limiter

Mechanical Torque Limiters with Servos?

Why Use Mechanical Torque Limiters in a Servo Drive System? Electronic current limiting is not a 100% effective way to prevent overloads in a mechanical system. On a servo drive system it is relatively easy to set torque limits in the parameter programming of the …

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Graphical Representation of Harmonic Distortion

Harmonic Distortion Explained

Variable Frequency Drives are becoming more and more popular in both heavy industry and in commercial applications as they provide both process improvements and potential for energy savings.  This statement is particularly true where the load is of a variable nature such as a fan …

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Cowern Papers

Electric Motor Basics – A Reference

Since electric motors consume far more than half of the electric power used in manufacturing plants around the world, it is a good idea to be well versed on electric motor basics – their selection, use, and optimization. One of Baldor Electric’s district managers named …

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Overgreased bearing shows importance of finding & following optimal bearing greasing intervals for industrial motors

Bearing Greasing Intervals

Bearing re-greasing interval time for industrial motors is an issue which tends to be as much of an art as it is a science. This post explains why it is challenging to make a blanket recommendation for bearing greasing intervals. From the scientific end of …

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