SIST IEC 60548:2005
(Main)Expression of the properties of sampling oscilloscopes
Expression of the properties of sampling oscilloscopes
Special definitions: methods and procedures of measurement for essential characteristics; methods of measurement of the most common forms of errors due to the instrument; rules for listing the characteristic; marking.
Expression des qualités des oscillographes ŕ échantillonnage
Liste de définitions particulières; conditions générales de mesures: méthodes de mesure des caractéristiques essen-tielles; méthodes de mesure des erreurs les plus courantes propres à l'instrumentation; règles de présentation des caractéristiques; règles de marquage.
Izražanje lastnosti vzorčevalnih osciloskopov
General Information
Standards Content (Sample)
SLOVENSKI SIST IEC 60548:2005
STANDARD
junij 2005
Izražanje lastnosti vzorčevalnih osciloskopov
Expression of the properties of sampling oscilloscopes
ICS 17.220.20 Referenčna številka
SIST IEC 60548:2005
...
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This part of IEC 60477 applies to resistors intended as laboratory AC resistors for use over a range of frequencies from DC up to a stated frequency which is not in excess of 1 MHz. Such resistors are hereinafter referred to as "AC resistors".
In addition to satisfying the requirements of IEC 60477, resistors satisfying the requirements of this standard are designed to have a small variation of resistance and a small phase displacement over the stated frequency range.
Because of the uncertainties in AC properties which can result from stray inductances, stray capacitances, eddy currents, dielectric absorption effects and skin effect, the AC resistors to which this standard applies are classified according to their construction (see Annex D), as follows:
a) Two-terminal resistor which each of one terminal both for current and potential;
b) Three-terminal resistor which has one more shield terminal (also could be called as guard terminal) connected to the electric screen than the two-terminal resistor to reduce the stray capacitances effect;
c) Four-terminal resistor which has independent current terminals and potential terminals to reduce the stray inductances and contact resistances;
d) Five-terminal resistor which has one more shield terminal than the four-terminal resistor;
e) Four-terminal coaxial resistor which has two terminal-pairs with the outer shield conductors working as the low terminal of current or potential;
f) Two-terminal-pair resistor which has two terminal-pairs with the outer shield conductors working as the return path for the signal current (not grounded);
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This part of IEC 61557 specifies the requirements applicable to equipment for measuring the
loop impedance between a line conductor and protective conductor; between a line conductor
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This document applies to resistors intended for use as laboratory DC resistors (hereinafter
referred to as "resistors") comprising standard resistors, single or multiple resistors of accuracy
Classes 0,000 05 to 10 and single or multi-dial resistors of accuracy Classes 0,000 5 to 10.
This document does not apply to:
1) resistors which are intended for use solely as permanently mounted circuit components,
2) resistors used on alternating current or on pulsed current,
3) active resistors,
4) series resistors and shunts which are considered as accessories of electrical measuring
instruments in the relevant IEC document (examples of these are as follows).
EXAMPLE 1 IEC 60051 series: Recommendations for direct acting indicating analogue electrical measuring
instruments and their accessories.
EXAMPLE 2 IEC 60258: Direct acting recording electrical measuring instruments and their accessories.
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This part of IEC 61557 specifies the requirements applicable to measuring equipment for
testing the phase sequence in three-phase distribution systems. Indication of the phase
sequence can be mechanical, visual and/or audible.
This document does not apply to additional measurements for other quantities. It does not
apply to monitoring relays.
NOTE Common worldwide three-phase distribution systems are depicted in IEC 61010-1.
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This part of IEC 61557 specifies the general requirements applicable to measuring and
monitoring equipment for testing the electrical safety in low-voltage distribution systems with
nominal voltages up to 1 000 V AC and 1 500 V DC.
When measuring equipment or measuring installations involve measurement tasks of various
measuring equipment covered by this series of standards, then the part of this series relevant
to each of the measurement tasks is applicable.
NOTE The term "measuring equipment" will hereafter be used to designate "testing, measuring and monitoring
equipment".
Other parts of IEC 61557 can specify additional requirements or deviations.
This document does not cover functional safety or cybersecurity
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This part of IEC 61557 specifies requirements for power metering and monitoring devices
(PMD) that measure and monitor the electrical quantities within electrical distribution systems,
and optionally other external signals. These requirements also define the performance in
single- and three-phase AC or DC systems having rated voltages up to 1 000 V AC or up to
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These devices are fixed or portable. They are intended to be used indoors and/or outdoors.
Power metering and monitoring devices (PMD), as defined in this document, give additional
safety information, which aids the verification of the installation and enhances the
performance of the distribution systems.
The power metering and monitoring devices (PMD) for electrical parameters described in this
document are used for general industrial and commercial applications.
This document does not address functional safety and cyber security aspects.
This document is not applicable for:
– electricity metering equipment that complies with IEC 62053-21, IEC 62053-22,
IEC 62053-23 and IEC 62053-24. Nevertheless, uncertainties defined in this document for
active and reactive energy measurement are derived from those defined in IEC 62053 (all
parts);
– the measurement and monitoring of electrical parameters defined in IEC 61557-2 to
IEC 61557-9 and IEC 61557-13 or in IEC 62020;
– power quality instrument (PQI) according IEC 62586 (all parts);
– devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring
instrument).
NOTE 1 Generally such types of devices are used in the following applications or for the following general needs:
– energy management inside the installation, such as facilitating the implementation of documents such as
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– monitoring and/or measurement of electrical parameters;
– measurement and/or monitoring of the quality of energy inside commercial/industrial installations.
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– energy measurement and/or monitoring, as well as sometimes compliance with aspects of building regulations;
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– demand side quality (current and voltage harmonics, over/under voltages, voltage dips and swells, etc.).
NOTE 3 PMD are historically called power meter, power monitor, power monitor device, power energy monitoring
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indicators to reduce the risk of electric shock for the testing person and bystanders caused by
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Products designed and manufactured in accordance with this document are for use by
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testing the absence of the operating voltage.
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Power metering and monitoring devices (PMD), as defined in this document, give additional safety information, which aids the verification of the installation and enhances the performance of the distribution systems.
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Requirements for power metering and monitoring function (PMF) and additional requirements for equipments embedding power metering and monitoring function (EPMF) are described in Annex H.
The power metering and monitoring devices (PMD) for electrical parameters described in this document are used for general industrial and commercial applications.
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This document is not applicable to:
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- the measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020;
- power quality instrument (PQI) according IEC 62586 (all parts);
- devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring instrument).
Note 1 Generally such types of devices are used in the following applications or for the following general needs:
- energy management inside the installation, such as facilitating the implementation of documents such as ISO 50001 and IEC 60364-8-1;
- monitoring and/or measurement of electrical parameters;
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Note 2 A measuring and monitoring device of electrical parameters usually consists of several functional modules. All or some of the functional modules are combined in one device. Examples of fuctnional modules are:
- measurement and monitoring of several electrical parameters simultaneously;
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Note 3 PMD are historically called power meter, power monitor, power monitor device, power energy monitoring device, power analyser, multifunction meter, measuring multifunction equipment, energe meters.
Note 4 Metering, measuring and monitoring applications are explained in Annex A.
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