IEC 60811-2-1-2001 pdf free
IEC 60811-2-1-2001 pdf free.Common test methods for insulating and sheathing materials of electric and optical cables – Part 2-1: Methods specific to elastomeric compounds – Ozone resistance, hot set and mineral oil immersion tests.
This standard specifies the test methods to be used for testing polymeric insulating and sheathing materials of electric and optical cables for power distribution and telecommunications, including cables used on ships and in offshore applications.
This standard gives the methods for the ozone resistance test, hot set test and mineral oil immersion test, which apply to elastomeric compounds.
1.2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60811. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 60811 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
lEG 60811-1-1:1993, 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 60811-1-2:1985, Common test methods for insulating and sheathing materials of electric cables — Part 1: Methods for general application — Section Two: Thermal ageing methods
ISO 1817:1999, Rubber, vulcanized — Determination of the effect of liquids
2 Test values
Full test conditions (such as temperatures, durations, etc.) and full test requirements are not specified in this standard: ills intended that they should be specified by the standard dealing with the relevant type of cable.
Any test requirements which are given in this standard may be modified by the relevant cable standard to suit the needs of a particular type of cable,
3 Applicability
Conditioning values and testing parameters are specified for the most common types of insulating and sheathing compounds and of cables, wires and cords.
4 Type tests and other tests
The test methods described in this standard are intended, in the first instance, to be used for type tests. In certain tests, where there are essential differences between the conditions for type tests and those for more frequent tests, such as routine tests, these differences are indicated
5 Pre-conditioning
All the tests shall be carried out not less than 16 h after the extrusion or vulcanization (or cross-linking), if any, of the insulating or sheathing compounds.
If the test is carried out at ambient temperature, the test-pieces shall be kept for at least 3 h at a temperature of 23 °C ± 5 °C.
6 Test temperature
Unless otherwise specified, tests shall be made at ambient temperature.
7 Median value
When several test results have been obtained and ordered in an increasing or decreasing succession, the median value is the middle value if the number of available values is odd, and is the mean of the two middle values if the number is even.
8 Ozone resistance test
Warning: Attention is drawn to the toxicity of ozone. Precautions should be taken to minimize exposure of personnel to It at all times and the concentration in the workroom environment should not be allowed to exceed 0,1 ppm (parts ozone per million parts air by volume), or the value in the current industrial hygienic standard, whichever is the lower.IEC 60811-2-1 pdf download.
