IEC 60335-2-2 Clause 21.101 Current-Carrying Hoses Comprehensive Test Equipment

Product Information

Standard: IEC60335-2-2:2009 ”Household and similar electrical appliances-Safety-Part2-2:Particular requirements for vacuum cleaners and water-suction cleaning appliances, IDT” clause 21.101, 21.102, 21.103, 21.104.

Specimen and limitations: Vacuum cleaner hoses, water suction cleaning appliance hoses, washing machine hoses

Test purpose: Used to assess the mechanical strength of vacuum cleaner hoses in terms of resistance to extrusion, abrasion, bending and torsion.

Test Principle

This equipment is a four-in-one comprehensive testing equipment. It adopts PLC control, touch screen operation, and controls the motor to drive the mechanical arm to realize various tests.

1. Extrusion resistance test: A system-controlled motor is used to drive the sensor to apply a force value. A 100*50mm pressure plate (corner rounding R1mm) is pressed to the sample 350mm away from the end of the hose at a speed of 50±5mm/min, reaching 1500N After releasing, it will return to the origin automatically.

2. Abrasion resistance test: The crank mechanism rotates at a rate of 30r/min, and the current-carrying hose sample is made to reciprocate 300mm back and forth 100 times through the connecting rod. At the same time, the hose is supported by a rotating smooth roller, and an emery cloth belt is attached to the outer edge of the roller, moving at a speed of 0.1m/min. The abrasive of the emery cloth is emery, and the particle size is Pl00 according to ISO 6344-2. A weight of mass 1kg is hung from the other end of the hose as a guide to prevent the hose from rotating. At the lowest position, the maximum distance between the weight and the center of the roller is 600mm. After the test is completed, the basic insulation shall not leak and the electrical strength test of 16.3 shall be carried out between the connected conductors and the salt solution.

3. Bending resistance test: The system controls the motor to drive the eccentric mechanism to lift the robotic arm (to 40±1°). The number of tests and the test speed can be preset, and the machine will automatically stop when the number of times is reached.

During the test, the end of the current-carrying hose intended to be connected to the power cleaning head is fixed on the pivot arm of the device. The distance between the pivot arm axis and the point where the hose extends into the rigid component is 300 ± 50 mm. A weight with a mass of 5kg is hung on the other end of the hose (the weight can slide along the weight slide), the pivot arm rises from the horizontal to 40°±1°, and the cycle is repeated 2500 times. Then turn the end of the hose to 900 and repeat the above test 2500 times. After the test is completed, conduct an electrical strength test on the sample.

4. Twist resistance test: The system controls the motor to drive the rotating shaft to rotate and twist the sample. During the test, the end of the current-carrying hose is fixed on the rotating fixture of the equipment (self-suspended), and the other end is locked to the horizontal fixture. Each cycle rotates 5 times forward and 5 times reversely at a rate of 10 r/min, and conducts 2000 cycle tests. After the test is completed, conduct an electrical strength test on the sample

Technical Parameters