Cord Anchorage Strain And Twisting Test Equipment HJ0609
Product information:
The test appliance conforms to IEC60335-1:25.15. It is used to test
the power cord tension and torque at the terminal two trials of the
appliances which are with a power cord, and intended flexible cord
permanently connected to the fixed wiring and other household
electrical appliances, medical equipment, checking whether the
clamping device is secure.
Appliances provided with a supply cord, and appliances intended to
be permanently connected to fixed wiring by a flexible cord, shall
have a cord anchorage. The cord anchorage shall relieve conductors
from strain, including twisting, at the terminals and protect the
insulation of the conductors from abrasion.
A mark is made on the cord while it is subjected to the pull force
shown in follow table, at a distance of approximately 20 mm from
the cord anchorage or other suitable point.
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 as close as possible to the appliance. The
torque is specified in following table and is applied for 1 min.
During the tests, the cord shall not be damaged and shall show no
appreciable strain at the terminals. The pull force is reapplied
and the cord shall not be longitudinally displaced by more than 2
mm.
Technical parameters:
| Power Supply | AC230V, 50HZ |
| Pull force weights | 20N*2, 30N*2( the pulling force of 30N, 60N, 80N, 100N can be
achieved) |
| Torque weights | 5N*1, 12.5N*1, 17.5N*1(the torque force 0.1Nm, 0.25Nm, 0.35Nm can
be achieved) |
| Test times | 0~9999(selectable),25 times is by default |
| Pull force frequency | 1 times/s |
| Torque arm | 20mm |
| Torque time | 0.01S-99 hours 99 min |
| Clamp | Combined clamp for both pull force and torque, matching by the
bearing, can reduce the friction when processing torque test |
Table – Pull force and torque.
Mass of appliance (kg) | Pull force (N) | Torque (Nm) |
≤1 | 30 | 0.1 |
> 1 and ≤4 | 60 | 0.25 |
> 4 | 100 | 0.35 |
Test procedure:
1. Press the “START” button, the pull force testing begins, after
it reaches to the preset test times, the torque weight will be
released automatically, and then the torque testing begins. After
it reaches to the preset twist time, manually lift the torque
weight, then the pull force and torque testing is completed.
2. Measure out the distance between the mark and the cord
anchorage, the distance subtract 20mm is the pull out length after
the test.
3. When process the next test, must press the “RESET” button before
starting the test, or the test device will not work.
