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Jargon Buster – Electrical data logging and recording

The electrical world can be confusing and we’ve all come across some terms that don’t make much sense. That’s why in each issue of Wired we unravel a piece of industry gobbledygook and tell you what it means – In plain old English.

Electrical data logging and recording

What is data logging and why is it required?

Electrical data logging and recording can be used for a number of reasons (see below). It can be carried out using a portable device, which needs to be connected on to switchgear or other equipment, or alternatively by a meter, which is permanently connected and normally networked to a computer.

Examples of when data logging / recording is required:

Load studies – to verify an electrical system capacity before adding loads. This may be required if you are looking to install additional equipment and need to determine your current usage.

Energy assessments – quantify energy consumption before and after improvements to justify energy-saving devices. Energy-saving schemes should always project a saving in electrical consumption and financial benefits. These calculations should be checked upon completion of the works.

What does a data logger do?

A data logger will typically measure and record electrical data so that it can be downloaded on to a computer and analysed. This information may be taken as an average, or as maximum or minimum values. The logging equipment may take a “scan” at pre-determined intervals, say once every minute, and record the information at that time.

The logging equipment can be used to record a lot of information; this will include:

Voltages, Currents (average,min.max.)

Harmonics Analysis THD

PowerActive, Reactive, Apparent, PF, Character, Sign

Voltage events (dips, sags, interruptions)

Periodic Analysis

Statistical Analysis

Anomalies (events) Analysis

Neutral Current (calculated)

Metermode – tabelaric results

Scopemode – oscilloscope


If you’d like to find out more about electrical data logging and recording, and how it could benefit your business, get in touch and we’ll be happy to help.

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