Electrical Measuring Transducers for Converting a.c. Electrical Quantities to Analogue or Digital Signals
|Publication Date:||1 May 2002|
|ICS Code (Measurement of electrical and magnetic quantities):||17.220.20|
This International Standard applies to transducers with electrical inputs and outputs for making measurements of a.c. electrical quantities. The output signal may be in the form of an analogue direct current or in digital form. In this instance, that part of the transducer utilized for communication purposes will need to be compatible with the external system.
This standard applies to measuring transducers used for converting alternating electrical quantities such as:
- active power
- reactive power
- power factor
- phase angle
to an output signal.
Within the measuring range, the output signal is a function of the measurand. An auxiliary supply may be needed.
This standard applies:
a) if the nominal frequency of the input(s) lies between 5 Hz and 1 500 Hz;
b) if a measuring transducer is part of a system for the measurement of a non-electrical quantity, this standard may be applied to the electrical measuring transducer, if it otherwise falls within the scope of this standard;
c) to transducers for use in a variety of applications such as telemetry and process control and in one of a number of defined environments.
This International Standard is intended:
- to specify the terminology and definitions relating to transducers whose main application is in electrical power engineering, especially for the purposes of process control and telemetry systems;
- to unify the test methods used in evaluating transducer performance;
- to specify accuracy limits and output values for transducers.