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IEC 61810-10
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays –
Part 10: Additional functional aspects and safety requirements for high-capacity
relays
Relais électromécaniques élémentaires –
Partie 10: Aspects fonctionnels et exigences de sécurité supplémentaires pour
les relais à grande capacité
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IEC 61810-10
Edition 1.0 2019-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays –
Part 10: Additional functional aspects and safety requirements for high-capacity
relays
Relais électromécaniques élémentaires –
Partie 10: Aspects fonctionnels et exigences de sécurité supplémentaires pour
les relais à grande capacité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70 ISBN 978-2-8322-7148-3
– 2 – IEC 61810-10:2019 © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Influence quantities . 8
5 Rated values . 8
6 General provisions for testing . 8
7 Documentation and marking . 9
8 Heating . 9
9 Basic operating function . 11
10 Dielectric strength . 12
11 Electrical endurance . 14
12 Mechanical endurance . 14
13 Clearances, creepage distances and solid insulation . 14
14 Terminations . 18
15 Sealing . 18
16 Heat and fire resistance . 19
17 Special tests . 19
Annex A (normative) Explanations regarding relays . 20
Annex B (informative) Inductive contact loads . 21
Annex C (normative) Test set-up . 24
Annex D (informative) Special loads . 25
Annex E (normative) Heating test arrangement . 26
Annex F (normative) Measurement of clearances and creepage distances . 27
Annex G (normative) Relation between rated impulse voltage, nominal voltage and
overvoltage category . 28
Annex H (normative) Pollution degrees . 30
Annex I (normative) Proof tracking test . 31
Annex J (informative) Schematic diagram of families of terminations . 32
Annex K (normative) Glow-wire test . 33
Annex L (normative) Ball pressure test . 34
Annex M (informative) Needle flame test . 35
Annex N (informative) Resistance for standard soldering processes . 36
Annex O (informative) Risk assessment . 37
Annex P (informative) Mechanical properties of terminals . 38
Annex Q (normative) Long-term stability of the sealing (leak rate evaluation) . 44
Annex R (informative) Short-circuit capacity . 46
Annex S (informative) Special tests for applications – Photovoltaic systems . 49
Annex T (informative) Special tests for applications – Road vehicles . 53
Bibliography . 62
Figure 1 – Test procedure of system evaluation . 18
Figure P.1 – Test equipment for flexion test . 42
Figure Q.1 – Temperature cycle . 44
Figure R.1 – Short-circuit capacity test circuit . 47
Figure T.1 – Short voltage drop for system with nominal voltages . 55
Figure T.2 – Supply voltage profile for the reset test . 56
Figure T.3 – PSD of acceleration versus frequency . 59
Figure T.4 – PSD of acceleration versus frequency . 60
Table 1 – Type testing . 9
Table 2 – Required relay data . 9
Table 3 – Test conductor for test current above 400 A and up to 800 A inclusive
dependent on the current carried by the terminal . 11
Table 4 – Test copper bars for test current above 400 A and up to 1 000 A inclusive
dependent on the current carried by the terminal . 11
Table 5 – Dielectric strength – AC. 12
Table 6 – Dielectric strength – DC . 13
Table 7 – Minimum clearances in air for insulation coordination . 15
Table B.1 – Verification of the making and breaking capacity (abnormal conditions) . 21
Table B.2 – Verification of the making and breaking capacity (normal conditions) . 22
Table B.3 – Electrical endurance test . 23
Table G.1 – Correspondence between the nominal voltage of the supply system and
the equipment rated impulse withstand voltage, in case of overvoltage protection by
surge-arresters according to IEC 61810-1 . 28
Table P.1 – Tightening torques for the verification of the mechanical strength of screw-
type terminals . 39
Table P.2 – Test values for flexion and pull-out tests for round copper conductors . 41
Table P.3 – Test values for pull-out test for flat copper conductors . 43
Table S.1 – Special tests for photovoltaic system . 50
Table S.2 – Number of operating cycles . 51
Table S.3 – Special tests . 52
Table T.1 – Special test for road vehicles . 53
...