IEC 60255-22-5:2008

IEC 60255-22-5
Edition 2.0 2008-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Measuring relays and protection equipment –
Part 22-5: Electrical disturbance tests – Surge immunity test

Relais de mesure et dispositifs de protection –
Partie 22-5: Essais d'influence électrique – Essais d'immunité aux ondes de
choc
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IEC 60255-22-5
Edition 2.0 2008-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Measuring relays and protection equipment –
Part 22-5: Electrical disturbance tests – Surge immunity test

Relais de mesure et dispositifs de protection –
Partie 22-5: Essais d'influence électrique – Essais d'immunité aux ondes de
choc
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 29.120.70; 33.100.10; 33.100.20 ISBN 978-2-88910-076-7
– 2 – 60255-22-5 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope and object.5
2 Normative references .5
3 Terms and definitions .6
4 Test severity level .7
5 Test equipment.8
6 Test set-up .8
6.1 General .8
6.2 Tests applied to auxiliary power supply port .8
6.3 Tests applied to current/voltage transformer inputs .8
6.4 Tests applied to status inputs/output contacts .8
6.5 Tests applied to communications port and other ports using shielded lines.9
7 Test procedure .9
8 Criteria for acceptance .9
9 Test report.10
Bibliography.20

Figure 1 – Ports tested in this standard for measuring relays and protection equipment.7
Figure 2 – Line to earth tests applied to the auxiliary power supply port.11
Figure 3 – Line to line tests applied to the auxiliary power supply port .12
Figure 4 – Line to earth tests applied to current/voltage transformer inputs.13
Figure 5 – Line to line tests applied to current/voltage transformer inputs .14
Figure 6 – Line to earth tests applied to status input/output contacts .15
Figure 7 – Line to line tests applied to status input/output contacts.16
Figure 8 – Line to earth tests applied to communications port and other ports using
shielded cables with the shields grounded at both ends .17
Figure 9 – Line to earth tests applied to communications port and other ports using
shielded cables with the shield connected at one end only.18
Figure 10 – Line to earth tests applied to single and bundled cables in a multi-shield
configuration.19

Table 1 – Test voltages and source impedances for the EUT ports .7
Table 2 – Criteria for acceptance .10

60255-22-5 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MEASURING RELAYS AND PROTECTION EQUIPMENT –

Part 22-5: Electrical disturbance tests –
Surge immunity test
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60255-22-5 has been prepared by technical committee 95:
Measuring relays and protection equipment.
This second edition cancels and replaces the first edition published in 2002. It constitutes a
technical revision. The main change concerns line to earth tests (see Figures 8, 9, 10).
The text of this standard is based on the following documents:
FDIS Report on voting
95/242/FDIS 95/247/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 60255-22-5 © IEC:2008
A list of all parts of IEC 60255 series, published under the general title Measuring relays and
protection equipment, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site 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.
60255-22-5 © IEC:2008 – 5 –
MEASURING RELAYS AND PROTECTION EQUIPMENT –

Part 22-5: Electrical disturbance tests –
Surge immunity test
1 Scope and object
This part of IEC 60255 is based on IEC 61000-4-5, referring to that publication where
applicable, and specifies the general requirements for surge immunity tests for measuring
relays and protection equipment for power system protection, including the control, monitoring
and process interface equipment used with those systems.
The objective of the tests is to confirm that the equipment under test will operate correctly
when energized and subjected to high-energy disturbances on the power and interconnection
lines, caused by surge voltages from switching and lightning effects.
This standard does not intend to test the capability of the insulation to withstand high-voltage
stress. The insulation test is covered by IEC 60255-27.
The requirements specified in this standard are applicable to measuring relays and protection
equipment in a new condition and
...