IEC 62368-1 Figure V.1 UL Unjointed Finger Probe

IEC 62368-1 Figure V.1 UL Unjointed Finger Probe is a precision safety testing instrument engineered for compliance verification of audio/video, information technology, and communications technology equipment. The probe incorporates a rigid, unjointed stainless steel test finger that simulates human finger dimensions and access patterns, essential for determining whether hazardous live parts or mechanical components remain inaccessible during normal operation and foreseeable misuse conditions.

Constructed with an insulating nylon handle for operator safety and secure grip, the probe applies a calibrated 10N ± 0.5N thrust force to replicate accidental human contact scenarios. This instrument is manufactured to exacting dimensional tolerances and material specifications as defined in IEC 62368-1 and UL standards, ensuring reliable performance for safety compliance testing in laboratory and production environments.

Technical Specifications

• Probe Type: IEC 62368-1 Figure V.1 Unjointed Finger Probe
• Finger Material: Stainless steel (rigid construction, corrosion-resistant, maintains dimensional stability)
• Handle Material: Nylon (electrically insulating, heat-resistant, non-slip surface for secure handling)
• Key Dimensions:
  • Finger Diameter: 12 mm ± 0.1 mm
  • Effective Finger Length: 80 mm ± 0.2 mm
  • Total Length (Finger + Handle): 180 mm ± 0.5 mm
• Applied Thrust Force: 10N ± 0.5N (calibrated to simulate accidental human contact conditions)
• Primary Function: Verification of inaccessibility to hazardous live parts and mechanical hazards in audio/video, IT, and communications technology equipment

Standardized Test Procedure

1. Conduct visual inspection of the probe for any damage or deformation (e.g., bent stainless steel finger, cracked nylon handle).
2. Power the equipment under test and allow it to reach normal operating conditions.
3. Grip the insulating handle and align the unjointed finger with potential access points on the equipment (e.g., ventilation openings, port gaps, seams).
4. Apply a steady 10N thrust force to the finger toward internal hazardous components.
5. Determine whether the finger contacts any dangerous parts (e.g., live conductors, moving mechanical components).
6. Document test results according to IEC 62368-1 and UL compliance requirements (pass/fail determination).

Application Areas

• Safety compliance testing of audio/video equipment (e.g., smart televisions, wireless speakers, home theater systems)
• Accessibility verification for information technology equipment (e.g., laptop computers, desktop workstations, Wi-Fi routers, network switches)
• Hazard assessment for communications technology devices (e.g., modems, telecommunication equipment, data center hardware)
• Quality control validation during manufacturing processes to prevent end-user electric shock or mechanical injury risks