IEC 62852:2014/AMD1:2020

IEC 62852 ®
Edition 1.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Connectors for DC-application in photovoltaic systems – Safety requirements
and tests
Connecteurs pour applications en courant continu pour systèmes
photovoltaïques – Exigences de sécurité et essais

IEC 62852:2014-11/AMD1:2020-03(en-fr)

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IEC 62852 ®
Edition 1.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Connectors for DC-application in photovoltaic systems – Safety requirements

and tests
Connecteurs pour applications en courant continu pour systèmes

photovoltaïques – Exigences de sécurité et essais

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-7867-3

– 2 – IEC 62852:2014/AMD1:2020
© IEC 2020
FOREWORD
This amendment has been prepared by IEC technical committee 82: Solar photovoltaic energy
systems.
The text of this amendment is based on the following documents:
FDIS Report on voting
82/1646/FDIS 82/1667/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
1 Scope
Add the following new sentence after the last paragraph:
This document does not apply to connectors for data collection, tracker controls or similar, but
it may be used as a guide for those connectors.
2 Normative references
Delete all year dates.
Add the following new references:
IEC 60112, Method for the determination of the proof and the comparative tracking indices of
solid insulating materials
IEC 60216-1, Electrical insulating materials – Thermal endurance properties – Part 1: Ageing
procedures and evaluation of test results
IEC 60216-5, Electrical insulating materials – Thermal endurance properties – Part 5:
Determination of relative thermal endurance index (RTE) of an insulating material

© IEC 2020
IEC TR 60664-2-1, Insulation coordination for equipment within low-voltage systems –
Part 2-1: Application guide – Explanation of the application of the IEC 60664 series,
dimensioning examples and dielectric testing
IEC 62930, Electric cables for photovoltaic systems with a voltage rating of 1,5 kV DC
ISO 868, Plastics and ebonite – Determination of indentation hardness by means of a
durometer (Shore hardness)
Replace:
IEC 61215:2005, Crystalline silicon terrestrial photovoltaic (PV) modules – Design
qualification and type approval
by:
IEC 61215-2, Terrestrial photovoltaic (PV) modules – Design qualification and type approval –
Part 2: Test procedures
Replace:
IEC TS 62548, Photovoltaic (PV) arrays – Design requirements
by:
IEC 62548, Photovoltaic (PV) arrays – Design requirements
3 Terms and definitions
Replace:
3.13
ambient temperature
by:
3.13
maximum ambient temperature
5 Constructional requirements and performance
5.1 General
Replace the existing third paragraph by the following:
Multi-way connectors shall be designed so that these requirements for earth-faulted and
short-circuit-proofed installation complies with IEC 62548 or IEC 60364-7-712.
5.2 Marking and identification
5.2.1 Identification
Replace the existing item h) by the following:
h) specified temperatures: ULT, LLT, maximum ambient temperature (minimum +85 °C);

– 4 – IEC 62852:2014/AMD1:2020
© IEC 2020
Add the following new item n):
n) RTE/RTI or TI (mechanical and electrical) of all polymeric insulating materials used in the
connector.
5.7 General design
Replace the existing subclause 5.7.2 by the following:
5.7.2 Connectors shall be so designed that connection of conductors of the type and cross-
sectional areas as described in 5.7.3 and as specified by the manufacturer is possible.
Besides the termination of the conductor, care shall be taken that no damage of the insulation
is possible, e.g. by avoiding sharp edges.
Replace the existing subclause 5.7.3 by the following:
5.7.3 Cables connected to the connector shall be suitable for use in photovoltaic systems
and shall comply with the requirements of IEC 62930. The values of the rated current and the
rated voltage shall have at least the rated values of the connector.
The class of the conductor shall be Class 5 in accordance with IEC 60228, Class 2
conductors are allowed for cables intended for fixed installation.
5.13 Temperature rise
Add, at the end of the first sentence, the following after the word “temperature”:
(ULT)
5.14 Cable anchorage
Replace the existing subclause 5.14 by the following:
5.14.1 Connectors intended to be used with cables specified by the manufacturer
For connectors intended to be used with cables specified by the manufacturer, the tests shall
be performed with cables as stated by the manufacturer.
The unloaded cable shall be marked so that any displacement relative to the gland can be
easily detected.
The cable is pulled for a duration of 1 s, 50 times, without jerks in the direction of the axis with
the relevant force as specified in Table 13.
At the end of this period, the displacement shall not exceed 2 mm. This measurement shall be
carried out after unloading the force from the cable.
Afterwards the specimen shall be mounted in the test apparatus for torque test. The unloaded
cable shall be marked so that any torsion relative to the gland can be easily detected, and
then a torque as specified in Table 14 shall be applied for 1 min.
During test, the torsion shall not exceed 45°.

© IEC 2020
5.14.2 Connectors intended to be used with generic cables
A test mandrel equivalent to the minimum value of the anchorage range of the cable gland as
specified by the manufacturer or supplier, with a sheath thickness as specified in Table 13
shall be fixed to the sample.
The unloaded test mandrel shall be marked so that any displacement relative to the gland can
be easily detected.
The test mandrel shall be pulled for a duration of 1 s, 50 times, without jerks in the direction
of the axis with the relevant force as specified in Table 13.
At the end of this period, the displacement shall not exceed 2 mm. This measurement is to be
carried out after unloading the force from the test mandrel.
Unless otherwise specified, test mandrels shall consist of a metallic rod with an elastomeric
sheath having a hardness of 70 Shore D ± 10 points in accordance with ISO 868 and a sheath
thickness as specified in Table 13 or Table 14. The complete test mandrel shall have a
tolerance of ± 0,2 mm for mandrels up to and including 16 mm diameter and ± 0,3 mm for
mandrels larger than 16 mm diameter. The shape shall be circular or a profile simulating the
outer dimension of the cable as specified by the manufacturer or supplier.
Table 13 – Pull forces for cord anchorage
Cable diameter Pull force Minimum sheath thickness of test mandrel
mm N mm
a
Up to 4 - 1
>4 to 8 30 1
>8 to 11 42 2
>11 to 16 55 2
>16 to 23 70 2
>23 to 31 80 2
>31 to 43 90 2
>43 to 55 100 2
>55 115 2
a
For cable diameters up to 4 mm, a suitable non-metallic mandrel may be used.

Afterwards the specimen shall be mounted in the test apparatus for torque test.
The unloaded mandrel shall be marked so that any torsion relative to the gland can be easily
detected, and then a torque specified in Table 14 is applied for 1 min.
During test, the torsion shall not exceed 45°.
The torsion test shall be performed by using a test mandrel equivalent to the maximum value
of the anchorage range of the cable gland as specified by the manufacturer or supplier, with a
torque for the appropriate maximum cable diameter as specified in Table 14.

– 6 – IEC 62852:2014/AMD1:2020
© IEC 2020
Table 14 – Values for torsion test
Cable diameter Torque Minimum sheath thickness of test mandrel
mm Nm mm
>4 to 8 0,10 1
>8 to 11 0,15 2
>11 to 16 0,35 2
>16 to 23 0,60 2
>23 to 31 0,80 2
>31 to 43 0,90 2
>43 to 55 1,00 2
>55 1,20 2
For metric cable glands meeting the requirements of IEC 62444 the tests described in this
subclause are not required.
5.19 Insulation parts
5.19.2 Outer accessible parts
Add the following new new item d):
d) approval of relative thermal endurance, relative thermal index or temperature index
(RTE/RTI or TI) in accordance with IEC 60216-5 or IEC 60216-1. Values shall be listed in
technical information.
NOTE Relevant RTI values evaluated in accordance to UL 746B are accepted as an alternative to RTE.
5.19.3 Inner parts
Add the following new item d):
d) approval of relative thermal endurance, relative thermal index or temperature index
(RTE/RTI or TI) in accordance with IEC 60216-5 or IEC 60216-1. Values shall be listed in
technical information.
NOTE Relevant RTI values evaluated in accordance to UL 746B are accepted as an alternative to RTE.
6.3.5 Mechanical operation
Replace the first senten
...