BS EN IEC 60375:2018 – TC:2020 Edition
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Tracked Changes. Conventions concerning electric circuits
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 97 |
IEC 60375:2018 specifies the rules for signs and reference directions and reference polarities for electric currents and voltages in electric networks.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 55 | undefined |
| 60 | English CONTENTS |
| 63 | FOREWORD |
| 65 | 1 Scope 2 Normative references 3 Terms and definitions |
| 73 | 4 Orientation of geometrical objects 4.1 Orientation of a curve 4.2 Orientation of a surface 4.3 Arrows perpendicular to the plane of the figure 5 Conventions concerning currents 5.1 Physical direction of current Figures Figure 1 – Orientation of a curve Figure 2 – Orientation of a surface |
| 74 | 5.2 Reference direction of current 5.3 Indication of the reference direction for currents 5.3.1 Indication of the reference direction for currents for a branch 5.3.2 Indication of the reference direction for mesh currents Figure 3 – Indication of the reference direction for a current by an arrow Figure 4 – Indication of the reference direction using the node names |
| 75 | 5.4 Kirchhoff law for nodes 6 Conventions concerning voltages 6.1 Physical polarity of voltage Figure 5 – Indication of the reference direction for mesh currents Figure 6 – Examples of the Kirchhoff law for nodes |
| 76 | 6.2 Reference polarity for a pair of nodes 6.3 Indication of the reference polarity 6.3.1 First method 6.3.2 Second method Figure 7 – Indication of the reference polarity by means of plus and minus signs Figure 8 – Simplified indication of the reference polarity by means of plus signs Figure 9 – Indication of the reference polarity by an arrow |
| 77 | 6.3.3 Third method 6.4 Kirchhoff law for meshes Figure 10 – Indication of the reference polarity using the node names Figure 11 – Simplified indication of the reference polarity using the node names |
| 78 | 7 Conventions concerning power 7.1 Physical direction of power 7.2 Reference direction of power 7.3 Indication of the reference direction of power 7.4 Combined conventions 7.4.1 General Figure 12 – Examples of the Kirchhoff law for meshes Figure 13 – Indication of the reference direction of power |
| 79 | 7.4.2 Motor convention 7.4.3 Generator convention 8 Conventions concerning two-port networks Figure 14 – Examples of motor conventions Figure 15 – Examples of generator conventions |
| 80 | 9 Conventions concerning sources 9.1 Conventions concerning voltage sources 9.1.1 Independent voltage sources 9.1.2 Controlled voltage sources Figure 16 – A reference convention for a two-port network Figure 17 – Graphical representation of an independent voltage source Figure 18 – Graphical representation of a voltage source controlled by a voltage: Us = αUc |
| 81 | 9.2 Conventions concerning current sources 9.2.1 Independent current sources 9.2.2 Controlled current sources Figure 19 – Graphical representation of a voltage source controlled by a current: Us = βic Figure 20 – Graphical representation of an independent current source |
| 82 | 10 Conventions concerning passive elements 10.1 General conventions 10.2 Resistive elements 10.2.1 Resistive two-terminal elements Figure 21 – Graphical representation of a current source controlled by a voltage: is = γUc Figure 22 – Graphical representation of a current source controlled by a current: is = δic |
| 83 | 10.2.2 Resistive n-terminal elements Figure 23 – Examples of graphical representations of a two-terminal resistive element Figure 24 – Examples of the graphical representationof a four-terminal resistive element |
| 84 | 10.3 Capacitive elements 10.3.1 Capacitive two-terminal elements Figure 25 – Examples of the graphical representationof a two-terminal capacitive element |
| 85 | 10.3.2 Capacitive n-terminal elements Figure 26 – Examples of the graphical representationof a four-terminal capacitive element |
| 87 | 10.4 Inductive elements 10.4.1 Inductive two-terminal elements Figure 27 – Examples of the graphical representationof a two-terminal inductive element |
| 88 | 10.4.2 Inductive n-port elements Figure 28 – Examples of the graphical representation of a three-port inductive element |
| 90 | 11 Complex notation 11.1 General 11.2 Conventions concerning complex representation of sinusoidal quantities 11.3 Reference direction of a complex current |
| 91 | 11.4 Reference polarity for a complex voltage Figure 29 – Examples of the Kirchhoff law for nodes in complex notation |
| 92 | 11.5 Complex representation of Ohm’s law Figure 30 – Examples of the Kirchhoff law for meshes in complex notation |
| 93 | 11.6 Conventions concerning the graphical representation of phasors 11.7 Conventions concerning phase differences Figure 31 – Examples of graphical representation of reference directionsand polarities in Ohm’s law for a complex two-terminal element Figure 32 – Graphical representation of a phasor in the complex plane Figure 33 – Graphical representation of phase difference in the complex plane |
| 94 | 11.8 Conventions concerning power 11.8.1 Time-dependent electric power 11.8.2 Complex power Figure 34 – Examples of the reference directions for time-dependent electric power Figure 35 – Examples of the reference directions for the complex power |
| 95 | Bibliography |
