IEC 62012-1-2004 pdf free.Multicore and symmetrical pair/quad cables for digital communications to be used in harsh environments – Part 1: Generic specification.
a) Load the cable onto the tensile rig and secure it. At both ends of the tensile rig, a method of securing the cable shall be used which uniformly locks the cable so that all components of the cable are restricted in their movement. For most cable constructions, clamping on cable is practical.
b) Connect the cable under tensile test to the measurement apparatus.
C) The tension shall be continuously increased to the required value given in the detail specification.
3.3.8.5 Requirements
After test, the attenuation characteristics shall be within the limiting values specified In the detail specification.
3.3.8.6 Details to be specified
— Length of the cable and length under tension.
— Tensile load.
— End preparation.
— Rate of tension increase.
— Minimum accuracy for the measurement of the cable length, if applicable.
— Temperature.
3.4 Environmental tests
3.4.1 Shrinkage of the insulation
The method of measuring the shrinkage of the insulation is specified in Clause 10 of
IEC 60811-1-3.
3.4.2 Vibration
3.4.2.1 Procedure
This test shall be carried out in accordance with test Fc of IEC 60068-2-6 as specified in 9.3.3 of IEC 61 169-1 which includes details on continuity monitoring and on the information which should be given in the relevant sectional and detail specifications.
3.4.2.3 Requirements
At the conclusion of the recovery period the cable shall comply with the requirements of the following tests, unless otherwise specified in the detail specification.
a) Insulation resistance.
b) Voltage proof.
c) Insertion loss.
d) Visual inspection.
The insulation resistance measurement and the voltage proof shall be carried out within 30 mm of expiry of the recovery period.
3.4.2.4 Information to be given In the detail specification
a) Severity of the test.
b) Electrical checks made immediately after conditioning and after the recovery period and their requirements.
3.4.3 Bump
3.4.3.1 Procedure
This test shall be carried out in accordance with test Eb of IEC 60068-2-29.
3.4.3.2 Seventies
Unless otherwise required in the sectional or relevant detail specification the following recommended severity shall be selected:
Number of bumps: 1 000 ± 10.
3.4.3.3 Requirements
At the conclusion of the recovery period the cable shall comply with the requirements of the following tests, unless otherwise specified in the detail specification.
a) Insulation resistance.
b) Voltage proof.
c) Insertion loss.
d) Visual inspection.IEC 62012-1 pdf free download.