IEC 60227-6:2001 pdf Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V
1 Scope
This part of IEC 60227 details the particular specifications for both circular and flat lift cables
and cables for flexible connections of rated voltages up to and including 450/750 V.
Each cable complies with the appropriate requirements given in IEC 60227-1 , and with the
particular requirements of this part of IEC 60227.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 60227. For dated references, subsequent amend-
ments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this part of IEC 60227 are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of IEC
and ISO maintain registers of currently valid International Standards.
IEC 60096-0-1 :1 990, Radio-frequency cables – Part 0-1 : Guide to the design of detailed
specifications – Coaxial cables 1
IEC 60227-1 :1 993, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V – Part 1 : General requirements 2
IEC 60227-2:1 997, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V – Part 2: Test methods
IEC 60228:1 978, Conductors of insulated cables
IEC 60332-1 :1 993, Tests on electric cables under fire conditions – Part 1 : Test on a single
vertical insulated wire or cable
IEC 60502-1 :1 997, Power cables with extruded insulation and their accessories for rated
voltages from 1 kV (U m = 1 ,2 kV) up to 30 kV (U m = 36 kV) – Part 1 : Cables for rated voltages
of 1 kV (U m = 1 ,2 kV) and 3 kV (U m = 3,6 kV)
IEC 6081 1 -1 -1 :1 993, Common test methods for insulating and sheathing materials of electric
cables – Part 1 : Methods for general application – Section 1 : Measurement of thickness and
overall dimensions – Tests for determining the mechanical properties
IEC 6081 1 -1 -2:1 985, Common test methods for insulating and sheathing materials of electric
cables – Part 1 : Methods for general application – Section 2: Thermal ageing methods
IEC 6081 1 -1 -4:1 985 , Common test methods for insulating and sheathing materials of electric
cables – Part 1 : Methods for general application – Section 4: Test at low temperature
IEC 6081 1 -3-1 :1 985, Common test methods for insulating and sheathing materials of electric
cables – Part 3: Methods specific to PVC compounds – Section 1 : Pressure test at high
temperature – Tests for resistance to cracking
IEC 6081 1 -3-2:1 985, Common test methods for insulating and sheathing materials of electric
cables – Part 3: Methods specific to PVC compounds – Section 2: Loss of mass test –
Thermal stability test
3.4 Tests
Compliance with the requirements of 3.3 shall be checked by inspection and by the tests
given in table 6 except that, owing to the rectangular cross-section of the cable, the following
modifications and additions shall be taken into account. Where applicable, 3.4.1 to 3.4.5
inclusive shall be read in conjunction with the relevant tests specified in table 6.
3.4.1 Pressure test at high temperature for sheaths
If the smaller sides of the cable are fully rounded in shape, this test shall be carried out on
one of the smaller sides in accordance with 8.2 of IEC 6081 1 -3-1 . To calculate the
compressing force, D is the minor dimension of the cable and is the mean sheath thicknesse 3 as determined in 8.1 .4 of IEC 6081 1 -1 -1 .
If the smaller sides are flat, or nearly flat, as depicted in figure 1 , this test shall be carried out
in accordance with 8.2 of IEC 6081 1 -3-1 , with the method modified as follows:
a) Preparation of test piece
A strip shall be cut from the wide side of the cable in the direction of the axis of the cable.
On the inner side, only the ridges shall be removed by grinding or cutting. The width of the
strip to be tested shall be at least 1 0 mm but not more than 20 mm. The thickness of the
strip shall be measured at the place where the compressing force F is applied.
b) Position of test piece in the test apparatus
The strip shall be bent around a mandrel having a diameter approximately equal to the
diameter of the core of the cable; the longitudinal axis of the strip shall be perpendicular to
the axis of the mandrel. Provision shall be made that the inner surface of the strip shall be
in contact over at least 1 20° of the circumference of the mandrel (see figure 2). The metal
blade of the test apparatus shall be placed on the middle of the test piece.
IEC 60227-6:2001 pdf Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V
