TS 2369

TS 2369 defines the letter and graphical symbols used with alternating-current electricity meters, and it also covers symbols that may appear on associated auxiliary devices. In general technical terms, such symbols provide a language-independent way to present key meter characteristics and usage information, helping the same marking remain understandable across different countries and labeling practices.

What meter symbols are used for

On electricity meters, symbols are a compact way to indicate the meter’s measuring arrangement, the current type involved, or the presence of related auxiliary equipment. From a practical engineering perspective, this reduces the risk of misreading the device during installation, maintenance, or inventory control. The focus of this standard is not the measuring principle itself, but the symbols that describe it and where those symbols may be placed on the meter.

Boundaries of the scope

• It covers letter and graphical symbols for a.c. electricity meters.
• It also covers symbols used on auxiliary devices associated with the meter.
• The symbols may be marked on the meter body, name-plate, dial plate, external labels, or accessories.
• The standard addresses symbolic identification and marking practice, not meter accuracy or performance testing.

In everyday use, these markings help users quickly identify the meter type, connection arrangement, or related auxiliary function. The value of TS 2369 lies in establishing a common visual language for electricity metering equipment and supporting consistent interpretation across manufacturers and markets.