Type

Dictionary

Coverage

A registry for metadata used for classification and description of products in all industrial/technical domains.

Hosted by

International Electrotechnical Commission (IEC)

Homepage

https://cdd.iec.ch/

The IEC Common Data Dictionary (CDD) is a registry for metadata used for classification and description of products in all industrial/technical domains.

The data model is described in IEC 61360. The dictionary includes quantities and units that are described in IEC 62720 - Identification of units of measurement for computer-based processing.

It covers any standard or non-standard units of measure currently in use, in two or more distinct ethno-linguistic groups or nations, at least in one domain of industry, for which an explicit method of conversion to a known standard unit of measure or its equivalent is well documented or evident from external references.

Quantity examples:

IRDI

Symbol

Name

0112/2///62720#UAD002#001

---

acceleration

0112/2///62720#UAD107#001

---

mass flow rate

Unit examples:

IRDI

Symbol

Name

0112/2///62720#UAB044#001

in/s2

inch per second squared

0112/2///62720#UAA497#001

g/s

gram per second