IEC 60684-2:1997/AMD2:2005

Amendment 2 - Flexible insulating sleeving - Part 2: Methods of test

General Information

• Status: Published
• Publication Date: 20-Nov-2005
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: TC 15 - Solid electrical insulating materials
• Drafting Committee: WG 5 - TC 15/WG 5
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 10-Aug-2011

Relations

• Amends: IEC 60684-2:1997 - Flexible insulating sleeving - Part 2: Methods of test
• Effective Date: 05-Sep-2023
• Revised: IEC 60684-2:2011 - Flexible insulating sleeving - Part 2: Methods of test
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 60684-2
AMENDMENT 2
2005-11
Amendment 2
Flexible insulating sleeving –
Part 2:
Methods of test
 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved
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– 2 – 60684-2 Amend. 2  IEC:2005(E)
FOREWORD
This amendment has been prepared by IEC technical committee 15: Standards on
specifications for electrical Insulating materials.
The text of this amendment is based on the following documents:
FDIS Report on voting
15/224/FDIS 15/255/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• withdrawn,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.
___________
Page 5
CONTENTS
Add the following new clauses:
51 Dynamic shear at ambient temperature
52 Dynamic shear at elevated temperature
53 Dynamic shear after heat shock and heat ageing
54 Rolling drum peel to aluminium
55 Aluminium rod dynamic shear
56 Sealing
57 Adhesive T peel strength of two bonded heat-shrinkable substrates

Page 113
Add after Clause 50, introduced in Amendment 1, the following new Clauses 51 through 57:
51 Dynamic shear at ambient temperature
51.1 Principle
This test is designed to evaluate the strength of dual wall sleevings under shear conditions
when bonded to an aluminium substrate.

60684-2 Amend. 2  IEC:2005(E) – 3 –
51.2 Apparatus
Aluminium strips (100 ± 5) mm x (25 ± 1) mm x (0,9 ± 0,1) mm.
Degreasing solvent: 2-Butanone (methyl ethyl ketone)
Specimen assembly fixture (see Figure 16)
Silicone release paper
320 grit abrasive
Tensile test machine
Oven (for method 52, dynamic shear at elevated temperature)
Weight and Mass 1,4 kg ± 0,1 kg.
Suitable weight to flatten specimens.
51.3 Form and number of test specimens
Three test specimens shall be prepared. Three strips of aluminium shall be abraded and
degreased on one side on a length of at least 20 mm from one end. Three lengths of sleeving
at least 120 mm long shall be recovered in an oven for the time and temperature as specified
in IEC 60684-3. Immediately after removal the sleeving shall be cut open longitudinally and laid
flat on the silicone release paper, with the inside coated surface in contact with the silicone
paper. A weight of sufficient mass to keep the specimens flat shall be placed on top.
This assembly shall be allowed to cool to room temperature before the weight is removed. Any
other suitable method for flattening the sleeving may be used.
The three specimens of the sleevings shall be finally cut longitudinally (100 ± 5) mm ×
(25 ± 1) mm.
The aluminium strips and cut sleeving specimens shall be assembled as shown in Figure 16,
with the coated surface of the sleeving in contact with the abraded surface of the aluminium,
overlapped between 12,5 mm and 14,2 mm. The weight with mass 1,4 kg shall be
preconditioned in an oven for at least 1 h at the assembly conditioning temperature as
specified in IEC 60684-3. The whole assembly, as shown in Figure 16, shall be placed in an
oven for the time and temperature as specified in IEC 60684-3. The assembly shall then be
removed from the oven and allowed to cool to room temperature before the weight is removed.
51.4 Procedure
Insert the specimen in the tensile test machine by clamping at least 25 mm of the aluminum
strip in the top jaw and at least 25 mm of the sleeving in the bottom jaw. The rate of jaw
separation shall be (50 ± 5) mm/min. Record the maximum load for each specimen.
51.5 Result
The result shall be the mean of the three maximum loads.

– 4 – 60684-2 Amend. 2  IEC:2005(E)
Dimensions in millimetres
Top view of weight
35 nominal
25 nominal
Side view (showing
Weight of Mass 1,4 kg ± 0,1 kg
assembly of each
specimen)
Release paper
Coated sleeving
Coated surface
Aluminium strip
Area of abraded
surface
Weight guides
Fully assembled side view
Aluminium strip
Coated sleeving
Test specimens
Top view of fixture without assemblies,
showing typical design of weight guides
Weight guide
Bottom plate
IEC  1839/05
Figure 16 – Assembly and fixture for dynamic shear at ambient temperature

60684-2 Amend. 2  IEC:2005(E) – 5 –
52 Dynamic shear at elevated temperature
The test specimens shall be prepared in accordance with 51.3.
The procedure shall be in accordance with 51.4 except that the test is performed in an oven
mounted in the tensile test machine. The test specimens shall be pre-conditioned in the test
oven and at the temperature of test for at least 30 min. The test temperatures shall be as
specified in IEC 60684-3.
53 Dynamic shear after heat shock and heat ageing
The test specimens shall be prepared in accordance with 51.3.
The test specimens shall be sandwiched between two PTFE or PTFE coated aluminium plates
as shown in Figure 17 with the bolts just sufficiently tight enough to ensure the specimens
remain flat during the heat shock or heat ageing periods. The assembly shall be conditioned in
an oven for the time and temperature specified in IEC 60684-3. The test specimen shall be
removed from the oven and allowed to cool to room temperature before they are removed from
the aluminum plates.
The test specimens shall then be tested in accordance with 51.4.
Dimensions in millimetres
Bolts
Test specimen
PTFE or PTFE
coated aluminium
plates
PTFE or PTFE
coated aluminium
Coated sleeving
plates
Aluminium strip
Coated surface
IEC  1840/05
NOTE Dimensions are nominal unless otherwise specified.
Figure 17 – Assembly for heat shock and heat ageing

– 6 – 60684-2 Amend. 2  IEC:2005(E)
54 Rolling drum peel to aluminium
54.1 Principle
This test is designed to evaluate the strength of dual wall sleevings under peel conditions when
bonded to an aluminium substrate.
54.2 Apparatus
Aluminium tube with outside diameter of (9,5 ± 0,25) mm, approximately 35 mm long
Degreasing solvent: 2-Butanone (methyl ethyl ketone)
Free rolling drum (see Figure 18)
Paper or adhesive masking tape
320 grit abrasive
Tensile test machine
Oven
54.3 Form and number of test specimens
Three test specimens shall be prepared. Abrade the aluminium tubes with the 320 grit abrasive
and then degrease with methyl ethyl ketone. Fix a narrow strip of adhesive masking tape
longitudinally on the aluminium tube. Cut lengths of sleeving (25 ± 1) mm long and position
centrally over the aluminium tube and condition in an oven for the time and temperature as
detailed in the IEC 60684-3, by suspending horizontally. Remove the test specimens from the
oven and allow to cool to ambient temperature. Cut longitudinally along the edge of the paper
or adhesive tape and lift to provide a flap of material.
54.4 Procedure
Measure the width of the sleeving to the nearest millimetre on the aluminum tube. Insert the
rolling drum into the aluminum tube of the test specimen. Clamp the rolling drum support into
the bottom grip of the tensile test machine and the flap of material into the upper grip. Pull the
test specimen apart at a constant rate of (50 ± 5) mm/min. (Figure 18)
Record the peel force in newtons over the entire peeling operation. Calculate the average peel
force by ignoring the first and last 10 % of the peel trace, take 5 readings at equal distances
apart from the remainder of the peel trace, add together and then divide by 5.
Calculate the peel strength using the following formula.
Average peel force (N) × 25
Peel strength (N/25 mm) =
Sleeving width (mm)
54.5 Result
The result shall be the mean of the three peel strengths.

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