IEC 62109-1 Straight Unjointed Test Finger

IEC 62109-1 Straight Unjointed Test Finger is a specialized safety tool designed for photovoltaic (PV) inverters and power conversion devices. It incorporates a rigid stainless steel finger to simulate human finger access, crucial for testing the accessibility of hazardous live or high-voltage components. Equipped with an insulating nylon handle for secure, non-slip operation, it applies a precise 10N thrust to replicate accidental human contact. Fully compliant with IEC 62109-1 standards, this tool is robust, dimensionally stable, and vital for manufacturers and laboratories to ensure PV equipment safety, mitigating electric shock risks for installers and users.

• Probe Type: Straight Unjointed Test Finger (IEC 62109-1 compliant for PV equipment)
• Finger Material: Stainless steel (rigid, corrosion-resistant, maintains dimensional accuracy under test conditions)
• Handle Material: Nylon (insulating, heat-resistant, non-slip for secure grip during high-voltage equipment testing)
• 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
  • Finger Tip: Hemispherical, radius 6 mm ± 0.05 mm (smooth to avoid enclosure damage)
• Applied Thrust: 10N ± 0.5N (precise force to simulate accidental human contact with PV equipment)
• Core Function: Ensures inaccessibility of hazardous live/high-voltage parts in PV inverters and power converters per IEC/UL 62109-1

Test Procedures:

1. Inspect the test finger for damage (e.g., bent steel, cracked handle) to ensure testing accuracy.
2. Power on the PV inverter/power converter and let it reach normal operating mode.
3. Hold the nylon handle and align the straight finger with equipment openings (e.g., vent grilles, terminal covers).
4. Apply steady 10N thrust to the finger toward internal hazardous parts.
5. Check if the finger touches any live/high-voltage components.
6. Record whether the equipment meets safety requirements.