Figure 1 60245-2 IEC Test Equipment Flexing Apparatus Constant Speed 0.33 M/S

IEC 60245-2 Figure 1 Test Equipment Flexing Apparatus Constant Speed 0.33 m/s

Standard:

IEC 60245-1 ‘Rubber insulated cables-Rated voltages up to and including 450/750 V-Part 1: General requirements’ clause 5.6.3.1;

IEC 60245-2 ‘Rubber insulated cables - Rated voltages up to and including 450/750 V - Part 2: Test methods’ clause 3.1 and figure 1;

IEC 60227-1 ‘Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 1: General requirements’ clause 5.6.3.1;

IEC 60227-2 ‘Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 2: Test methods’ clause 3.1 and figure 1;

IEC 60065-1 ‘Audio, video and similar electronic apparatus – Safety requirements’ clause 16.3b).

Application:

The flexing apparatus is use for tests of mechanical strength of completed flexible cables.

Test sample:

Completed flexible cables, flexible cords. IEC Test Equipment

Standard description:

This test shall be carried out by means of the apparatus shown in figure 1 . This apparatus consists of a carrier C, a driving system for the carrier and four pulleys for each sample of cable to be tested. The carrier C supports two pulleys A and B, which are of the same

diameter. The two fixed pulleys, at either end of the apparatus, may be of a different diameter from pulleys A and B, but all four pulleys shall be so arranged that the sample is horizontal between them. The carrier makes cycles (forward and backward movements) over a distance of 1 m at an approximately constant speed of 0.33 m/s between each reversal of the direction of movement.

The pulleys shall be made of metal and have a semi-circular shaped groove for circular cables and a flat groove for flat cables. The restraining clamps D shall be fixed so that the pull is always applied by the weight from which the carrier is moving away. The distance from one restraining clamp to its support, while the other clamp is resting on its support, shall be of 5 cm maximum.

The driving system shall be such that the carrier turns smoothly and without jerks when it reverses from one direction to another.

Parameter: