IEC 62846:2016

IEC 62846 ®
Edition 1.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Railway applications – Current collection systems – Requirements for and
validation of measurements of the dynamic interaction between pantograph
and overhead contact line
Applications ferroviaires – Systèmes de captage de courant – Exigences et
validation des mesures de l’interaction dynamique entre le pantographe et la
caténaire
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IEC 62846 ®
Edition 1.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Railway applications – Current collection systems – Requirements for and

validation of measurements of the dynamic interaction between pantograph

and overhead contact line
Applications ferroviaires – Systèmes de captage de courant – Exigences et

validation des mesures de l’interaction dynamique entre le pantographe et la

caténaire
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 45.060 ISBN 978-2-8322-3651-2

– 2 – IEC 62846:2016 © IEC 2016
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Symbols and abbreviated terms . 9
5 General . 10
6 Measurement of total mean uplift force . 11
7 Measurement of contact force . 13
7.1 General requirements . 13
7.2 Aerodynamic influence of the measurement system . 14
7.3 Inertia correction . 14
7.4 Aerodynamic correction . 14
7.5 Calibration of the measurement system . 15
7.6 Measurement parameters . 16
7.7 Measurement results . 16
8 Measurement of displacement . 16
8.1 General . 16
8.2 Vertical displacement of the contact point . 16
8.3 Uplift at the support . 16
8.4 Measurement of other displacements in the overhead contact line . 16
9 Measurement of arcing . 17
9.1 General requirements . 17
9.2 Calibration of the arc measurement system . 18
9.3 Adjustment of threshold for the measurement distance . 18
9.4 Values to be measured . 18
9.5 Measurement results . 19
Annex A (informative) Particular conditions existing in certain countries (exceptions) –
Japan . 20
A.1 Measurement of percentage of all arcing AQ . 20
A.1.1 General requirements . 20
A.1.2 Calibration of the arc measurement system . 20
A.1.3 Adjustment of threshold for the measurement distance . 21
A.1.4 Values to be measured . 21
A.1.5 Measurement results . 21
A.2 Measurement of percentage of current loss . 22
A.2.1 General requirements . 22
A.2.2 Current loss detection . 22
A.2.3 Measurement result . 22
Annex B (informative) Contact wire bending stress . 24
B.1 General . 24
B.2 Measurement points of contact wire bending stress. 24
B.3 Measurement result . 24
Bibliography . 25

Figure 1 – Principle arrangements for a tethered test . 12

Figure 2 – Contact force measurement . 13
Figure 3 – Example for segmented contact strip . 14
Figure 4 – Detector location . 18
Figure A.1 – Test setup . 22

Table 1 – Initial test speed . 12

– 4 – IEC 62846:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RAILWAY APPLICATIONS –
CURRENT COLLECTION SYSTEMS –
REQUIREMENTS FOR AND VALIDATION OF MEASUREMENTS
OF THE DYNAMIC INTERACTION BETWEEN PANTOGRAPH
AND OVERHEAD CONTACT LINE
FOREWORD
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