Cord Anchorage Strain and Twisting Test Equipment
Standard: Clause 25.15 of IEC 60335-1 Household and similar electrical appliances – Safety – Part 1: General requirements and etc.
Application: It is used to check the cord anchorage of the appliances provided with a supply cord, and appliances intended to be permanently connected to fixed wiring by a flexible cord, shall relieve conductors from strain, including twisting, at the terminals and protect the insulation of the conductors from abrasion.
Test sample: Household appliances, medical equipment, lamps, plugs and sockets and etc.
Feature: The test equipment adopts Z-word structure, can be used to test the clamping terminal firmness of the refrigerators, washing machines and other large household appliances’ power cords.
The test method is that a mark is made on the cord at a distance of approximately 20 mm from the cord anchorage or other suitable point. Then the cord is then pulled, without jerking, for 1 s in the most unfavourable direction with the force specified. The test is carried out 25 times. The cord, unless on an automatic cord reel, is then subjected to a torque that is applied for 1 min. After above test, the cord shall not be longitudinally displaced by more than 2 mm.
Parameters:
| Input Power |
AC220V 50HZ |
| Pull Force Weight |
20N*2,30N*2 (the pulling force of 30N,60N,80N,100N can be achieved); |
| Torque Weight |
5N*1, 12.5N*1, 17.5N*1 and a torque arm (0.1Nm,0.25Nm,0.35Nm can be acheived); |
| Pull Test Cycles |
0~999999, can be preset, default 25 |
| Pull Speed |
1 cycles/s |
| Torque Time |
0.01S～99 hour 59 min 59 s |
| Fixture |
Tension fixture and torque fixture are combined, which
coordinated in the middle through the bearing, reduce the friction during torque test.
|
| Structure |
The device adopts motor cam mandrel mechanism, Z-word connection, so that the fixture can hold the power cord which is on the appliance and 150mm above from the ground. |
Table – Pull force and torque.
| Mass of appliance (kg) |
Pull force (N) |
Torque (Nm) |
Combination of Pull Force Weight and Torque Weight |
| ≤1 |
30 |
0.1 |
30N+5N |
| > 1 and ≤4 |
60 |
0.25 |
2*30N+12.5N |
| > 4 |
100 |
0.35 |
2*30N +2*20N+17.5N |
Product Tags:
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Twisting Strain Test Machine Cord Anchorage AC220V 50HZ 1 Cycles/S Images
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