IEC 60335-2-3 Clause 20.104 Test Probe

The IEC 60335-2-3 Test Probe set is used to evaluate accessible openings that may create crushing or shearing hazards in ironing boards and ironing systems. It includes 7 mm and 25 mm cylindrical probes for checking openings between movable and fixed parts according to Clause 20.104.

This probe set helps laboratories identify whether openings created during adjustment, folding, unfolding or movement may require further safety evaluation.

Applicable Standard and Test Method

The test probe set is designed for IEC 60335-2-3 Clause 20.104. The probes are applied without appreciable force to openings between movable and fixed parts of ironing boards or ironing systems.

Testing should be performed in the most unfavorable positions during adjustment, release, folding, unfolding or movement. Final evaluation should follow IEC 60335-2-3 Clause 20.104 and the laboratory acceptance criteria.

Technical Parameters

Standard and Test Information

Ordering and Documentation Information

Testing Principle and Result Evaluation

The IEC 60335-2-3 Test Probe set is used to check whether openings created by movable parts may form accessible crushing or shearing points. During testing, the 7 mm and 25 mm probes are applied to relevant openings without appreciable force.

If the 7 mm probe does not enter the opening, the opening is generally considered too small to create the specified access condition. If the 25 mm probe enters the opening, the clearance is generally considered large enough for the specified evaluation.

If the 7 mm probe enters but the 25 mm probe does not enter, the opening may represent a potential crushing or shearing hazard and should be evaluated according to IEC 60335-2-3 Clause 20.104 and the laboratory acceptance criteria.

Common Error Mitigation

Reliable testing depends on correct probe use and correct selection of test positions. Laboratories should avoid:

• Applying force to push the probe into an opening
• Testing only one product position while ignoring folding or adjustment positions
• Failing to check openings between movable and fixed parts
• Using non-standard probe diameters
• Ignoring openings that appear only during movement
• Recording only the final result without describing the tested position
• Treating the probe itself as a complete test machine instead of a standard checking tool

Operation and Test Notes

Before testing, users should confirm the applicable IEC 60335-2-3 clause, test positions, movable part conditions and required opening evaluation method.

The ironing board or ironing system should be checked in the most unfavorable positions during adjustment, release, folding, unfolding or movement. The probes should be applied gently and without appreciable force to avoid forcing the probe into an opening that would not normally be accessible.

Maintenance and Documentation Support

After testing, the probes should be cleaned and stored in a dry, protected condition. The probe surface and diameter should be inspected regularly for wear, damage, bending, burrs or deformation that may affect repeatability.

For formal testing, laboratories should keep relevant records such as product specification, diameter verification record, inspection record, tested opening position and test result. KingPo can provide product documentation support according to order requirements.