Glossary of terms used on this site

There are 54 entries in this glossary.
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H

Term Definition
High voltage

High voltage is a voltage higher than 1000 V

Hub

Active network component. Each port of a hub links individual media segments together to create a larger network that operates as a single LAN. Collisions in the network are possible

Human Machine Interface (HMI)

Display screen, either part of an IED or as a stand-alone device, presenting relevant data in a logical format, with which the user interacts. An HMI will typically present windows, icons, menus, pointers, and may include a keypad to enable user access and interaction

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