IEC 60754-2:2011/AMD1:2019

Amendment 1 - Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity

Amendement 1 - Essai sur les gaz émis lors de la combustion des matériaux prélevés sur câbles - ­ Partie 2: Détermination de la conductivité et de l'acidité (par mesure du pH)

General Information

• Status: Published
• Publication Date: 24-Nov-2019
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.020 - Electrical engineering in general
• ICS: 29.060.20 - Cables
• Technical Committee: TC 20 - Electric cables
• Drafting Committee: WG 18 - TC 20/WG 18
• Current Stage: PPUB - Publication issued
• Start Date: 29-Nov-2019
• Completion Date: 25-Nov-2019

Relations

• Amends: IEC 60754-2:2011 - Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60754-2 ®
Edition 2.0 2019-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
G ROUP SAFETY PUBLICATION
PU BLICATION GROUPÉE DE SÉCURITÉ

AMENDMENT 1
AMENDEMENT 1
Test on gases evolved during combustion of materials from cables –
Part 2: Determination of acidity (by pH measurement) and conductivity

Essai sur les gaz émis lors de la combustion des matériaux prélevés sur
câbles –
Partie 2: Détermination de la conductivité et de l‘acidité (par mesure du pH)

IEC 60754-2:2011-11/AMD1:2019-11(en-fr)

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IEC 60754-2 ®
Edition 2.0 2019-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
G ROUP SAFETY PUBLICATION
PU BLICATION GROUPÉE DE SÉCURITÉ

AMENDMENT 1
AMENDEMENT 1
Test on gases evolved during combustion of materials from cables –

Part 2: Determination of acidity (by pH measurement) and conductivity

Essai sur les gaz émis lors de la combustion des matériaux prélevés sur

câbles –
Partie 2: Détermination de la conductivité et de l‘acidité (par mesure du pH)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020; 29.060.20 ISBN 978-2-8322-7580-1

– 2 – IEC 60754-2:2011/AMD1:2019
© IEC 2019
FOREWORD
This amendment has been prepared by IEC technical committee 20: Electric cables.
The text of this amendment is based on the following documents:
FDIS Report on voting
20/1883/FDIS 20/1890/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.
_____________
INTRODUCTION
Add, at the end of the first paragraph, the following new dashed item:
– Part 3: Measurement of low level of halogen content by ion chromatography
Replace the last sentence with the following new text:
This part of IEC 60754 is linked with both IEC 60754-1 and IEC 60754-3. The test procedure
for obtaining the absorption solution in this part of IEC 60754 is the same as for IEC 60754-3
but the test procedure differs considerably from IEC 60754-1.

1 Scope
Add at the end of the first paragraph the following sentence:
The heating (combustion) procedure of this part of IEC 60754 is the same as in IEC 60754-3.

© IEC 2019
5.4 Combustion boats
In the last paragraph, replace the sentence “The combustion boat shall then be weighed to an
accuracy of 0,1 mg until two identical consecutive weights are obtained.” with the following
new text:
The combustion boat shall then be weighed with an analytical balance until two identical
consecutive measurements in mg, rounded to one decimal figure, are obtained. The accuracy
is described in 5.7.
5.6 Air supply system
Replace the second and third paragraphs, including the NOTE, with the following:
2 -3
The flow rate of air, ρ, shall be 20 m/h × (π/4) x D x 10 with a tolerance of ±10 %, where D
is the internal diameter of the quartz tube.
EXAMPLE
2 -3
If D = 30 mm, 20 m/h × (π/4) × D x 10 = 14,1 l/h, and the flow rate can be in the range 12,7 l/h to 15,5 l/h.
2 -3
If D = 46 mm, 20 m/h × (π/4) × D x 10 = 33,2 l/h, and the flow rate can be in the range 29,9 l/h to 36,5 l/h.
NOTE The flow rate of air, ρ, is related to the velocity, v , according to the formula
π D²
−3
ρ=v ××10
where
D is the internal diameter of the tube (mm);
ρ is the flow rate of air (l/h);
v is the speed of air (m/h).
2 -3
If v = 20 m/h, this becomes, ρ = 15,7 m/h × D x 10 .
Replace under Method 2 the second sentence with the following:
The air shall be filtered and dried and shall be introduced on the inlet side of the quartz glass
tube (see Figure 4).
5.7 Analytical balance
Replace the sentence with the following:
The balance shall have a resolution and an accuracy of ±0,1 mg or better.

5.8 Laboratory glassware
Replace “ISO 1042” with “ISO 1042 Class B”.

– 4 – IEC 60754-2:2011/AMD1:2019
© IEC 2019
6.3 Mass of specimen
In the first paragraph, replace the first sentence with the following: Weigh the combustion
boat (m ) as defined in 5.4.
In the first paragraph, at the end of the second sentence, replace the text “which shall be
weighed to an accuracy of 0,1 mg” with “which shall be weighed with an analytical balance so
a measurement in mg, rounded to one decimal figure (m ), is obtained.”
7.4 Washing procedure
Replace, at the end of the last sentence, “made up to 1 000 ml” with “made up to the 1 000 ml
mark.”.
8.1 General method
Replace the second paragraph with the following new text:
If, in the case of reporting against a performance requirement, the coefficient of variation is
higher than 5 % and the difference between the requirement and the mean value is less than
or equal to 2,5 times the standard deviation, a further three tests shall be carried out and the
mean value, standard deviation and coefficient of variation shall be recalculated using the six
values. If the difference be
...