IEC 60071-1:2006/AMD1:2010

Amendment 1 - Insulation co-ordination - Part 1: Definitions, principles and rules

Gives guidance on the protection of overvoltage issues for both stand-alone and grid-connected photovoltaic power generating systems.

Amendement 1 - Coordination de l'isolement - Partie 1: Définitions, principes et règles

Sert de guide pour la protection contre les surtensions des syst�mes photovolta�ques de production d'�nergie, aussi bien les syst�mes isol�s que ceux raccord�s au r�seau de distribution.

General Information

• Status: Published
• Publication Date: 13-Jan-2010
• ICS: 27.160 - Solar energy engineering
• ICS: 29.080.30 - Insulation systems
• Technical Committee: TC 28 - Insulation co-ordination
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 08-Aug-2019

Relations

• Revised: IEC 60071-1:2019 - Insulation co-ordination - Part 1: Definitions, principles and rules
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60071-1

®

Edition 8.0 2010-01



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Insulation co-ordination –
Part 1: Definitions, principles and rules

Coordination de l'isolement –
Partie 1: Définitions, principes et règles


IEC 60071-1:2006/A1:2010

---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60071-1


®

Edition 8.0 2010-01



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Insulation co-ordination –
Part 1: Definitions, principles and rules

Coordination de l'isolement –
Partie 1: Définitions, principes et règles


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
G
CODE PRIX
ICS 29.080.30 ISBN 978-2-88910-040-8
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 60071-1 Amend. 1 © IEC:2010




FOREWORD


This amendment has been prepared by IEC technical committee 28: Insulation co-ordination.


The text of this amendment is based on the following documents:


FDIS Report on voting

28/198A/FDIS 28/201/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 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.
_____________

5.6 List of standard rated short-duration power-frequency withstand voltages
Replace the existing text by the following new text:
The following r.m.s. values, expressed in kV, are standardized as withstand voltages: 10, 20,
28, 38, 50, 70, 95, 115, 140, 185, 230, 275, 325, 360, 395, 460, 510, 570, 630, 680.
The following r.m.s. values, expressed in kV, are under consideration as withstand voltages:
710, 790, 830, 880, 960, 975, 1 050, 1 100, 1 200.
5.7 List of standard rated impulse withstand voltages

Replace the existing text by the following new text:
The following peak values, expressed in kV, are standardized as withstand voltages: 20, 40,
60, 75, 95, 125, 145, 170, 200, 250, 325, 380, 450, 550, 650, 750, 850, 950, 1 050, 1 175,
1 300, 1 425, 1 550, 1 675, 1 800, 1 950, 2 100, 2 250, 2 400, 2 550, 2 700, 2 900, 3 100.

---------------------- Page: 4 ----------------------
60071-1 Amend. 1 © IEC:2010 – 3 –


Table 3 – Standard insulation levels for range II (U > 245 kV)
m

Replace the existing Table 3 by the following new Table 3:




Standard rated switching impulse withstand voltage
Highest Standard rated

voltage for lightning impulse
Longitudinal Phase-to-earth Phase-to-phase
equipment withstand

a
b
insulation
U voltage
m


(ratio to the

kV kV kV phase-to-earth kV
(peak value) (peak value) peak value)
(r.m.s. value) (peak value)

850
750 750 1,50
950
c
300
950
750 850 1,50
1 050
950
850 850 1,50
1 050
362
1 050
850 950 1,50
1 175
1 050
850 850 1,60
1 175
1 175
420 950 950 1,50
1 300
1 300
950 1050 1,50
1 425
1 175
950 950 1,70
1 300
1 300
550 950 1 050 1,60
1 425
950 1 425
1 175 1,50
1 050 1 550
1 675
1 175 1 300 1,70
1 800
1 800

800 1 175 1 425 1,70
1 950
1 175 1 950
1 550 1,60
1 300
2 100
 1 950
d
1 425
– –
2 100
2 100
1 425 1 550 1,70
2 250
1 100
2 250
1 550 1 675 1,65
2 400
2 400
1 675 1 800 1,6
2 550

---------------------- Page: 5 ----------------------
– 4 – 60071-1 Amend. 1 © IEC:2010


Standard rated switching impulse withstand voltage
Highest Standard rated

voltage for lightning impulse

Longitudinal Phase-to-earth Phase-to-phase
equipment withstand
a
b

insulation
U voltage
m
 (ratio to the



kV kV kV phase-to-earth kV

(peak value) (peak value) peak value)
(r.m.s. value) (peak value)

2 100

1 550 1 675 1,70

2 250

2 250

1 200 1 675 1 800 1,65
2 400

2 550
1 800 1 950 1,60
2 700
a
Value of the impulse voltage component of the relevant combined test while the peak value of the
power-frequency component of opposite polarity is U × √2 / √3.
m
b
These values apply as for phase-to-earth and phase-to-phase insulation as well; for longitudinal
insulation they apply as the standard rated lightning impulse component of the combined standard
rated withstand voltage, while the peak value of the power-frequency component of opposite
polarity is 0,7 × U × √2 / √3.
m
c
This U is a non-preferred value in IEC 60038.
m
d
This value is only applicable to the phase-to-earth insulation of single phase equipment not
exposed to air.

---------------------- Page: 6 ----------------------
60071-1 Amend. 1 © IEC:2010 – 5 –


Table A.1 – Correlation between standard rated lightning impulse withstand voltages
and minimum air clearances


Replace Table A.1 by the following new Table A.1:

Standard rated lightning impulse Minimum clearance

withstand voltage mm

kV Rod-structure Conductor-structure


20 60

40 60

60 90
75 120
95 160
125 220
145 270
170 320
200 380
250 480
325 630
380 750
450 900
550 1 100
650 1 300
750 1 500
850 1 700 1 600
950 1 900 1 700
1 050 2 100 1 900
1 175 2 350 2 200
1 300 2 600 2 400
...