The Detail

Insight for OEMs, machine designers and industrial equipment manufacturers

Field notes on power, control, data connectivity, system reliability and physical integrity.

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How to Measure Current and Voltage on a High-Voltage DC Bus

To measure current on a high-voltage DC bus, put a shunt in the bus and read it with a transducer that sits at bus potential and isolates the signal....Read More
DC Electrical Measurement In An Industrial Environment.

The first alternator was built in 1835 in Paris, France, by Hippolyte Pixii. It was a device which utilized a magnet rotated by a hand crank to...Read More
Electric Vehicle and Charging Station Infrastructure: An Overview

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What Is a UL Certification and Why Does It Matter?

If you build industrial control panels or machines, the UL Mark is not a marketing badge. It is what the inspector looks for before a panel ... Read more

UL 489: What Is It and How Should It Be Applied?

UL 489 is the standard for molded-case circuit breakers, the devices that provide branch circuit, feeder, and service protection in a ... Read more

NFPA 79: What It Is and How It Applies to Your Machine

NFPA 79 is the Electrical Standard for Industrial Machinery. It picks up where UL 508A stops, at the enclosure wall, and covers the ... Read more

Advantages of Solid State Relays over Electromechanical Relays

Let’s paint a quick scenario: You were presented with two relays: one is a solid state relay and the other is an electromechanical relay. ... Read more

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What Changes in the Power Path When an AI Rack Pulls More Than 100 kW?

Three things change. The whip to the rack stops being a 30 A cord and becomes a 60 or 100 A listed assembly, and more of the room's ... Read more

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How to Measure Current and Voltage on a High-Voltage DC Bus

To measure current on a high-voltage DC bus, put a shunt in the bus and read it with a transducer that sits at bus potential and isolates ... Read more

Power Meter or Power Quality Analyzer: What Is the Difference?

A power meter tells you how much power and energy a circuit used. A power quality analyzer also records how good that power was, event by ... Read more

How to Get 24 V Control Power and AC From a High-Voltage DC Bus

To get 24 V control power from a high-voltage DC bus, use a DC/DC converter rated for the full swing of that bus. To run an AC motor load ... Read more

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