IEC 60884-1 Clause 23.4 Plug Socket Tester Power Cord Flexing Test Apparatus 6 Stations

IEC 60884-1 Clause 23.4 Plug Socket Tester Power Cord Flexing Test Apparatus 6 Stations

Standard description(IEC60884-1 clause 23.4)​:

23.4 Non-rewirable plugs and non-rewirable portable socket-outlets shall be designed in such a way that the flexible cable is protected against excessive bending where it enters the accessory.
Guards provided for this purpose shall be of insulating material and shall be fixed in a reliable manner.
NOTE 1 Helical metal springs, whether bare or covered with insulating material, should not be used as flexible cable guards.
Compliance is checked by inspection and by a flexing test made by means of an apparatus as shown in figure 21.
The test is made on new specimens.                               Plug Socket Tester
The specimen is fixed to the oscillating member of the apparatus so that, when it is at the middle of its travel, the axis of the flexible cable, where it enters the specimen, is vertical and passes through the axis of oscillation.
Specimens with flat cords are mounted so that the major axis of the section is parallel to the axis of oscillation.
The accessory shall be fixed in the test apparatus in the following way:
– plugs: by the pins;                 Plug Socket Tester
– portable socket-outlets: at a distance of 4 mm to 5 mm in the direction of the flexible cable, from the engagement face; a test plug having the maximum dimensions shall be inserted in the portable socket-outlet during the test.
The accessory is, by variation of the distance between the fixing part of the oscillating member and the axis of oscillation, positioned so that the flexible cable makes the minimum lateral movement when the oscillating member of the test apparatus is moved over its full travel.
NOTE 2 In order to have the possibility of easily finding by experiment the mounting position with a minimum lateral movement of the flexible cable during the test, the flexing apparatus should be built in such a way that the different supports for the accessories mounted on the oscillating member can be readily adjusted.                                                                  Plug Socket Tester
NOTE 3 It is recommended to have a device (for example, a slot or a pin) to see whether the flexible cable makes the minimum lateral movement.
The flexible cable is loaded with a mass such that the force applied is
– 20 N for accessories with flexible cables having a nominal cross-sectional area exceeding 0,75 mm2;
– 10 N for other accessories.
A current equal to the rated current of the accessory or the following current, whichever is the lower, is passed through the conductors:
– 16 A for accessories with flexible cables having a nominal cross-sectional area larger than 0,75 mm2;
– 10 A for accessories with flexible cables having a nominal cross-sectional area of 0,75 mm2;
– 2,5 A for accessories with flexible cables having a nominal cross-sectional area less than 0,75 mm2.
The voltage between the conductors is equal to the rated voltage of the specimen.
The oscillating member is moved through an angle of 90° (45° on either side of the vertical), the number of flexings being 10 000 and the rate of flexing 60/min.
NOTE 4 A flexing is one movement, either backwards or forwards.
Specimens with circular section flexible cables are turned through 90° in the oscillating member after 5 000 flexings; specimens with flat flexible cables are only bent in a direction perpendicular to the plane containing the axes of the conductors.
During the flexing test, there shall be
– no interruption of the current,
– no short circuit between conductors.
NOTE 5 A short-circuit between the conductors of the flexible cable is
considered to occur if the current attains a
value equal to twice the test current of the accessory.
After the test, the guard, if any, shall not have separated from the body and the insulation of the flexible cable shall show no sign of abrasion or wear; broken strands of the conductors shall not have pierced the insulation so far as to become accessible.

Product Introduction:

The plug cord flexibility test apparatus is designed and manufactured according to the standard requirement of IEC 60884-1 figure 21, which is used to process the bending test for the power cord of non rewirable plugs, appliances and similar electrical appliances (electric tools).

The device can be preset test times (up to 999999), it can carry out the test and calculate of the numbers of tests automatically. When the test times reach to the preset value, the system will shut down automatically and completion signals sound. Once the test apparatus connects to external load, it can be used to process test with load.                                              Plug Socket Tester

Standard: IEC 60884-1 2013 clause 23.4 and figure 21, UL817, VDE0620

Application: This device is used for test the flexing properties of non-rewirable plugs (terminals) and non-rewirable portable socket-outlets, check the fatigue strength of the power cable and jacket.

Test sample: Non-rewirable plugs and non-rewirable portable socket-outlets

Feature: The speed reducing motor controls the crank sliding block structure to do the reciprocating motion, the left and right flexing angles are adjusted by manual scale, and angle automatic adjustment touch screen model can be customized.

Tester will automatic shutdown when preset test times completed.

Parameters:

1. Power supply: AC220V 50Hz
2. Flexing angle: Swivel angle on either side for 45° , 60°, or 90°. Adjustable
3. Flexing rate: 10~60rpm (frequency conversion), the default 60 times /min
4. Weights: 20N, 10N. 6 each(UL 113g and 284g weights can be customized)
5. Test station: 6 stations, with 6 sets of clamp device
6. Test times: one general counter, 6 individual counters. 0~999999 preset
7. Mechanical theory: The crank block on the reduction gearbox is driven by the electric motor to do the reciprocating action.
8. Cord broken indicator: Φ25 red indicating light