IEC 61143-1:1998 pdf download – Electrical measuring instruments -x-t recorders – Part 1: Definitions and requirements

IEC 61143-1:1998 pdf download – Electrical measuring instruments -x-t recorders – Part 1: Definitions and requirements.
This part of IEC 61143 applies to X.t recorders used for the measurement of voltage and current which measure and record analogue electrical quantities as a function of time
It also applies to a recorder whose chart scale lines do not correspond directly to the electrical input quantity, provided that the relationship between them Is known.
For the measurement of other electrical quantities, the relevant parts of IEC 60051 also apply.
This part also applies to non-interchangeable accessories and accessories of limited interchangeability (e.g. shunts, impedance elements) if they are used with the recorder and the adlustments have been made for the combination. For controllers with electrical outputs and containing electrical recorders, this part applies only to the recorder and does not apply to the control circuit.
This part does not apply to special purpose recorders or to special purpose devices (when they are used as accessories) which are covered by their own IEC standards.
This part does not cover safety requirements (for reference, see IEC 61010) and does not contain either requirements for protection against environmental conditions Or the relevant tests. However, when necessary, tests under conditions approaching those of use may be selected from IEC 60068. to prove protection against environmental conditions.
Further, It does not contain requirements concerning the dimensions of Instruments or accessories (for the former, see IEC 60473).
2 Normative references
The following normative documents contain provisions which, through reference In this text, constitute provisions of this part of IEC 61143. At the time of publication of this standard, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 61143 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of lEG and ISO maintain registers of currently valid International Standards.
IEC 60027. Letter symbols to be used in electrical technology
lEG 60051-1:1984, Direct acting indicating analogue electrical measuring instruments and their accessories — Part 1: Definitions and general requirements common to all parts
3 DefinItions
The values of a.c. quantities given in this part are r.m.s. values, unless otherwise stated.
For the purpose of this part, the following definitions apply.
3.1 General terms
3.1.1 electrical measuring Instrument: A measuring instrument intended to measure an electrical or non-electrical quantity using electrical means.
3.12 analogue display Instrument: A measuring instrument intended to present or display the outj.ut inlormation as a continuous function of the measured quantity.
3.1.3 electronic measuring instrument: A measuring instrument intended to measure an electrical or non-electrical quantity using electronic means.
3.1.4 Instrument with electric screen: An instrument shielded by conductive material from the influence of an electric field of external origin.
3.1.5 accessory: An element, group of elements or device associated with the measuring circuit of a recorder in order to confer specified characteristics on the recorder,
3.1.5.1 Interchangeable accessory: An accessory having its own properties and accuracy. these being independent of those of the recorder with which it may be associated.
NOTE — An accssor iecon;iOefed to be nt,rctiangoat4e when 45 rated ciiaractan;tic are kno*n and marked and are sutt.cienl to enable its errors and v5riations to be determined without using the associated recondef. For .samplq, a shunt who;. adgustinent takes into account the input current oft’. recorder and which is not negligible and which I known 4 consIdered to be interchangeable
3.1.5.2 accessory of limited interchangeability: An accessory having its own properties and accuracy, which can be associated only with recorders for which certain characteristics are within specified limits.
3.1.5.3 non.interchangeablo accessory: An accessory adjusted to take into account the electrical characteristics of a specific recorder.
3.1.6 shunt: A resistor connected in parallel with a measuring circuit of a recorder.
NOTE — A shunt is generally intended to provide a voltage proportional to the current lobe measured,
3.1.7 series resistor (lmp.dance): A resistor (impedance) connected in series with a
measuring circuit of a recorder.
NOTE — A series resistor Impedance) is generally intended to eutend the voltage measuring range oh a recorder.