Ammeters indicate average RMS current

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New from OEM Automatic are bimetallic and combined ammeters that are suitable for thermal monitoring of transformers, cables and other electrical devices that have a slow reaction to current changes.

These meters indicate the average RMS current value during the predefined measuring period using bimetallic needles that do not react to short current pulses. A red memory needle also marks the maximum current reached.

These meters can be combined with a standard ammeter fitted in the opposite corner to give an instantaneous load current reading.

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