EN 61643-21:2001/A1:2009
(Amendment)Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
Is applicable to devices for surge protection of telecommunications and signalling etworks against indirect and direct effects of lightning or other transient overvoltages.
Überspannungsschutzgeräte für Niederspannung - Teil 21: Überspannungsschutzgeräte für den Einsatz in Telekommunikations- und signalverarbeitenden Netzwerken - Leistungsanforderungen und Prüfverfahren
Parafoudres basse-tension - Partie 21: Parafoudres connectés aux réseaux de signaux et de télécommunications - Prescriptions de fonctionnement et méthodes d'essais
Nizkonapetostne naprave za zaščito pred prenapetostnimi udari - 21. del: Naprave, priključene na telekomunikacijska in signalna omrežja - Zahtevane lastnosti in preskusne metode (IEC 61643-21:2000/A1:2008, spremenjen)
Uporablja se za naprave za zaščito telekomunikacijskih in signalnih omrežij pred prenapetostnimi udari v primeru posrednih in neposrednih učinkov strele ali drugih prehodnih prenapetosti.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2009
1L]NRQDSHWRVWQHQDSUDYH]D]DãþLWRSUHGSUHQDSHWRVWQLPLXGDULGHO 1DSUDYH
SULNOMXþHQHQDWHOHNRPXQLNDFLMVNDLQVLJQDOQDRPUHåMD=DKWHYDQHODVWQRVWLLQ
SUHVNXVQHPHWRGH ,(& $ VSUHPHQMHQ
Low voltage surge protective devices -- Part 21: Surge protective devices connected to
telecommunications and signalling networks - Performance requirements and testing
methods
Überspannungsschutzgeräte für Niederspannung -- Teil 21: Überspannungsschutzgeräte
für den Einsatz in Telekommunikations- und signalverarbeitenden Netzwerken -
Leistungsanforderungen und Prüfverfahren
Parafoudres basse-tension -- Partie 21: Parafoudres connectés aux réseaux de signaux
et de télécommunications - Prescriptions de fonctionnement et méthodes d'essais
Ta slovenski standard je istoveten z: EN 61643-21:2001/A1:2009
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
29.240.10 Transformatorske postaje. Substations. Surge arresters
Prenapetostni odvodniki
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 61643-21/A1
NORME EUROPÉENNE
April 2009
EUROPÄISCHE NORM
ICS 29.240; 29.240.10
English version
Low voltage surge protective devices -
Part 21: Surge protective devices connected to telecommunications
and signalling networks -
Performance requirements and testing methods
(IEC 61643-21:2000/A1:2008, modified)
Parafoudres basse-tension - Überspannungsschutzgeräte
Partie 21: Parafoudres connectés für Niederspannung -
aux réseaux de signaux Teil 21: Überspannungsschutzgeräte
et de télécommunications - für den Einsatz in Telekommunikations-
Prescriptions de fonctionnement und signalverarbeitenden Netzwerken -
et méthodes d'essais Leistungsanforderungen
(CEI 61643-21:2000/A1:2008, modifié) und Prüfverfahren
(IEC 61643-21:2000/A1:2008, modifiziert)
This amendment A1 modifies the European Standard EN 61643-21:2001; it was approved by CENELEC on
2009-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: avenue Marnix 17, B - 1000 Brussels
© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61643-21:2001/A1:2009 E
Foreword
The text of amendment 1:2008 to the International Standard IEC 61643-21:2000, prepared by
SC 37A, Low-voltage surge protective devices, of IEC TC 37, Surge arresters, together with common
modifications prepared by the Technical Committee CENELEC TC 37A, Low voltage surge protective
devices, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as
amendment A1 to EN 61643-21:2001 on 2009-03-01.
In this document the common modifications to IEC 61643-21:2000/A1:2008 are indicated by a vertical
line in the left margin of the text.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-03-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2012-03-01
Annex ZA, which was added by CENELEC, has been updated to reflect the changes in the normative
references.
__________
– 3 – EN 61643-21:2001/A1:2009
Foreword
Delete the references to the annexes.
1.2 SPD configurations
Replace Figures 1a to 1f with:
X1
SPD
(V)
X2
Figure 1a – Two-terminal SPD
X1
SPD
SPD
X1 Y1
C
(V,I)
(V)
C X2
Figure 1b – Three-terminal SPD Figure 1c – Three-terminal SPD
X1 Y1
SPD
X1 Y1
SPD
(V,I)
X2 Y2
(V,I)
X2 Y2
C
Figure 1d – Four-terminal SPD Figure 1e – Five-terminal SPD
X1 Y1
X2
Y2
SPD
(V,I)
Xn Yn
a
C
a
The common terminal C may not be provided.
Figure 1f – Multi-terminal SPD
1.3 Use of this standard
th
Replace the 5 paragraph with:
Subclause 5.2.3 provides transmission tests that SPDs may need to conform to, depending on
their communication and signalling application. Selection of the applicable transmission tests
from 5.2.3 shall be made, based on the intended application of the SPDs. Table 1 provides
general guidance on how to select the applicable transmission tests.
Delete the last paragraph.
Replace Table 1 with:
Table 1 – General SPD requirements
Test Sub-
Requirement – Test Type of SPD
series clause
6.1
1 General test
Identification and
6.1.1 A A A A A A
documentation
6.1.2 A A A A A A
Marking
6.2.3
Transmission tests
6.2.3.1 A O O O A O
Capacitance
6.2.3.2 O A A A O A
Insertion loss
6.2.3.3 O O O A O O
Return loss
6.2.3.4 O O O A O O
Longitudinal balance
6.2.3.5 O O O O O O
Bit Error Ratio (BER)
Near-end crosstalk
6.2.3.6 O O O A O O
(NEXT)
6.3
Mechanical tests
Terminals and
6.3.1 A A A A A A
connectors
General testing
6.3.1.1 A A A A A A
procedure
Terminals with
6.3.1.2 A A A A A A
screws
6.3.1.3 A A A A A A
Screwless terminals
Insulating pierced
6.3.1.4 A A A A A A
connections
Pull-out-test on SPD
terminals designed
for single-core
6.3.1.4.1 A A A A A A
conductors
Pull-out-test on SPD
terminals designed
for multi-core cables
6.3.1.4.2 A A A A A A
and cords
Mechanical strength
6.3.2 A A A A A A
(mounting)
SPD with only voltage-
limiting function
SPD with both voltage-
limiting and current-
limiting functions
SPD with voltage-limiting
function and linear
component between its
terminals
SPD having both voltage-
limiting and current-
limiting functions with
enhanced transmission
capabilities
SPD having only voltage-
limiting function but
intended for use in
extended range
environment
SPD having both voltage-
limiting and current-
limiting functions but
intended for use in
extended range
environment
– 5 – EN 61643-21:2001/A1:2009
Table 1 (continued)
Test Sub-
Requirement – Test Type of SPD
series clause
Resistance to ingress
of solid objects and to
harmful ingress of
6.3.3 A A A A A A
water
Protection against
6.3.4 A A A A A A
direct contact
6.3.5 A A A A A A
Fire resistance
6.4
Environmental tests
High temperature and
6.4.1 O O O O A A
humidity endurance
Environmental cycling
6.4.2 O O O O A A
with impulse surges
Environmental cycling
6.4.3 O O O O A A
with a.c. surges
Voltage limiting
6.2.1
2 tests
Maximum continuous
6.2.1.1 A A A A A A
operating voltage (U )
c
6.2.1.2 A A A A A A
Insulation resistance
Impulse durability for
voltage limiting
6.2.1.6 A A A A A A
function
Impulse-limiting
6.2.1.3 A A A A A A
voltage
Impulse reset
6.2.1.4 A A A A A A
switching types
AC durability for
voltage limiting
6.2.1.5 O O O O O O
function
Blind spot test multi
6.2.1.8 A A A A A A
stage SPD
Overstressed fault
6.2.1.7 A A A A A A
mode
Current limiting
6.2.2
3 tests
6.2.2.1 N.A. A A A N.A. A
Rated current
6.2.2.2 N.A. A A A N.A. A
Series resistance
3 3
6.2.2.3 N.A. A N.A. A N.A. A
Current response time
3 3
6.2.2.4 N.A. A N.A. A N.A. A
Current reset time
Maximum interrupting
3 3
6.2.2.5 N.A. A N.A. A N.A. A
voltage
3 3
6.2.2.6 N.A. A N.A. A N.A. A
Operating duty test
SPD with only voltage-
limiting function
SPD with both voltage-
limiting and current-
limiting functions
SPD with voltage-limiting
function and linear
component between its
terminals
SPD having both voltage-
limiting and current-
limiting functions with
enhanced transmission
capabilities
SPD having only voltage-
limiting function but
intended for use in
extended range
environment
SPD having both voltage-
limiting and current-
limiting functions but
intended for use in
extended range
environment
Table 1 (continued)
Test Sub-
Requirement – Test Type of SPD
series clause
AC durability for
current limiting
3 3
6.2.2.7 N.A. A N.A. A N.A. A
function
Impulse durability for
current limiting
3 3
6.2.2.8 N.A. A N.A. A N.A. A
function
6.5 O O O O O O
4 Acceptance tests
A Applicable.
N.A. Not applicable.
O Optional.
For each category of test impulse a new set of samples can be used.
It is admissible to measure the impulse-limiting voltage 6.2.1.3 while testing impulse durability 4.2.1.6.
Test not applicable if there is a linear component between its terminals.
Each test series is carried out on three samples.
2 Normative references
Add the following new references:
IEC 61643-12:2008, Low-voltage surge protective devices – Part 12: Surge protective devices
connected to low-voltage power distribution systems – Selection and application principles
IEC 61643-22:2004, Low-voltage surge protective devices – Part 22: Surge protection devices
connected to telecommunications and signalling networks – Selection and application
principles
IEC 62305-4:2006, Protection against lightning – Part 4: Electrical and electronic systems
within structures
ITU-T Recommendation K.55:2002, Overvoltage and overcurrent requirements for insulation
displacement connectors (IDC) terminations
ITU-T Recommendation K.65:2004, Overvoltage and overcurrent requirements for termination
modules with contacts for test ports or SPDs
ITU-T Recommendation O.9:1999, Measuring arrangements to assess the degree of
unbalance about earth
Delete the dates from the following references:
IEC 60529, IEC 61000-4-5, IEC 61083-1 and IEC 61643-1.
Delete the following reference:
ITU-T Recommendation K.17:1988, Tests on power-fed repeaters using solid-state devices in
order to check the arrangements for protection from external interference
SPD with only voltage-
limiting function
SPD with both voltage-
limiting and current-
limiting functions
SPD with voltage-limiting
function and linear
component between its
terminals
SPD having both voltage-
limiting and current-
limiting functions with
enhanced transmission
capabilities
SPD having only voltage-
limiting function but
intended for use in
extended range
environment
SPD having both voltage-
limiting and current-
limiting functions but
intended for use in
extended range
environment
– 7 – EN 61643-21:2001/A1:2009
3 Definitions
Replace 3.8, 3.10, 3.14, 3.15 and 3.22 with:
3.8
surge protective device
SPD
device that restricts the voltage of a designated port or ports, caused by a surge, when it
exceeds a predetermined level
NOTE 1 Secondary functions may be incorporated, such as a current-limiting to restrict a terminal current.
NOTE 2 Typically the protective circuit has at least one non-linear voltage-limiting surge protective component.
NOTE 3 An SPD is a complete assembly, having terminals to connect to the circuit conductors.
3.10
current limiting
action of an SPD, containing at least one non-linear current-limiting component, that causes
currents exceeding a predetermined value to be restricted
3.14
voltage clamping type SPD
SPD that has high shunt impedance and will have a continuous reduction in impedance with
increasing current in response to a voltage surge exceeding the threshold level of the SPD
NOTE Examples of components used in voltage clamping type SPDs: varistors (e.g. MOV) and avalanche
breakdown diodes (ABD).
3.15
voltage switching type SPD
SPD that has a high shunt impedance and will have a sudden and large reduction in
impedance in response to a voltage surge exceeding the threshold level of the SPD
NOTE Examples of components used in voltage switching type SPDs: air gaps, gas discharge tubes (GDT) and
thyristor surge suppressors (TSS).
3.22
rated current
maximum current a current-limiting SPD can conduct continuously with no change in the
impedance of the current-limiting components
NOTE This is also applicable to linear series components.
Add the following new definition 3.32:
3.32
surge (telecommunications)
temporary excessive voltage or current, or both, coupled on a telecommunication line, from an
external electrical source
NOTE 1 Typical electrical sources are lightning and AC/DC power systems.
NOTE 2 Electrical source coupling can be one or more of the following; electric, magnetic, electromagnetic,
conductive.
4.1.1 Normal service conditions
Replace 4.1.1 as follows:
4.1.1.1 Air pressure and altitude
Air pressure is 80 kPa to 106 kPa. These values represent an altitude of +2 000 m to –500 m
respectively.
4.1.1.2 Ambient temperature
• normal range: –5 °C to +40 °C
NOTE 1 This range normally addresses SPDs for indoor use. This corresponds to code AB4 in
IEC 60364-5-51.
• extended range: –40 °C to +70 °C
NOTE 2 This range normally addres
...
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