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IEC 63052
Edition 1.0 2019-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power frequency overvoltage protection devices (POPs) for household and
similar applications
Dispositifs de protection contre les surtensions à fréquence industrielle (POP)
pour les applications domestiques et similaires
your local IEC member National Committee for further information.
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IEC 63052
Edition 1.0 2019-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power frequency overvoltage protection devices (POPs) for household and
similar applications
Dispositifs de protection contre les surtensions à fréquence industrielle (POP)
pour les applications domestiques et similaires
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-7268-8
– 2 – IEC 63052:2019 © IEC 2019
CONTENTS
FOREWORD . 8
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and abbreviated terms . 12
3.1 Terms and definitions. 12
3.2 Abbreviated terms . 14
4 Classification . 15
4.1 According to the method of construction . 15
4.2 According to the number of monitored line-to-neutral conductor voltages . 15
4.3 According to the method of mounting . 15
5 Characteristics of POPs . 15
5.1 Summary of characteristics . 15
5.2 Rated quantities and other characteristics. 16
5.2.1 Rated voltage . 16
5.2.2 Rated current (I ) . 16
n
5.2.3 Rated frequency . 16
5.2.4 Rated making and breaking capacity (I ) . 16
m
5.2.5 Rated making and breaking capacity on one pole (I ) . 16
m1
5.3 Standard and preferred values . 16
5.3.1 Preferred values of rated voltage (U ) . 16
n
5.3.2 Preferred values of rated current (I ) . 17
n
5.3.3 Preferred values of rated frequency . 17
5.3.4 Minimum value of the rated making and breaking capacity (I ) . 17
m
5.3.5 Minimum value of the rated making and breaking capacity on one pole
(I ) . 17
m1
5.3.6 Standard and preferred values of the rated conditional short-circuit
current (I ) and standard and preferred values of the rated conditional
nc
short-circuit current for one pole (I ) . 17
nc1
5.3.7 Limit values of the break times and non-actuating times . 18
5.3.8 Standard value of rated impulse withstand voltage (U ) . 18
imp
5.4 Coordination with short-circuit protective devices (SCPDs) . 18
5.4.1 General . 18
5.4.2 Rated conditional short-circuit current (I ) and rated conditional short-
nc
circuit on one pole (I ) . 19
nc1
5.4.3 Operating characteristics of opening means for POPs according to 4.1.4. 19
6 Marking and other product information . 19
6.1 Marking . 19
6.2 Additional marking for POPs according to 4.1.4 . 22
6.2.1 Marking of POPs . 22
6.2.2 Instructions for wiring and operation . 22
7 Standard conditions for operation in service and for installation . 22
7.1 Standard conditions . 22
7.2 Conditions of installation . 23
7.3 Pollution degree . 23
8 Requirements for construction and operation . 23
8.1 General . 23
8.2 Mechanical design . 24
8.2.1 General . 24
8.2.2 Mechanism . 25
8.2.3 Clearances and creepage distances . 26
8.2.4 Screws, current-carrying parts and connections . 29
8.2.5 Terminals for external conductors . 30
8.3 Protection against electric shock . 32
8.4 Dielectric properties and isolating capability. 33
8.5 Temperature-rise . 33
8.5.1 Temperature-rise limits . 33
8.5.2 Ambient air temperature . 34
8.6 Operating characteristics . 34
8.6.1 Operating characteristics of the MPD part . 34
8.6.2 Operating characteristics of the POP . 34
8.7 Mechanical and electrical endurance . 34
8.8 Performance at short-circuit currents . 35
8.9 Resistance to mechanical shock and impact . 35
8.10 Resistance to heat . 35
8.11 Resistance to abnormal heat and to fire . 35
8.12 Safety performance of overstressed POPs . 35
8.13 Behaviour of POPs in case of current surges caused by impulse voltages . 35
8.14 Reliability . 35
8.15 Electromagnetic compatibility (EMC) . 35
9 Testing procedure. 36
9.1 General . 36
9.1.1 General testing procedure for the different type of POPs . 36
9.1.2 Characteristics of POPs are checked by means of type tests . 37
9.1.3 For certification purposes, type tests are carried out in test sequences . 38
9.2 Test conditions . 38
9.3 Test of indelibility of marking . 39
9.4 Test of reliabil
...