Cord Anchorage For Supply Cord Household Appliance Test Equipment
Standard:
IEC 60335-1 ‘Household and similar electrical appliances – Safety –
Part 1: General requirements’ clause 25.15
Application:
It is used to check whether the cord anchorage of the household appliances’ power cord is firm, can process the pull force and torque
testing.
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.
It shall not be possible to push the cord into the appliance to
such an extent that the cord or internal parts of the appliance
could be damaged.
Feature:
A mark is made on the cord while it is subjected to the pull force
shown in Table 12, 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 Table 12 and is applied for 1 min.
Table 12 – 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 |
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.
Parameter:
| Power Supply | AC220V, 50HZ |
| Pull force weights | 10N*2,20N*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 |
