CEI 23-50 Fig 4 Access Probe

The CEI 23-50 Fig 4 Test Probe is a specialized tool for verifying access to hazardous live or mechanical parts in electrical lighting equipment, designed specifically to meet Italian market safety requirements. It features a precision-machined metal shaft for reliable gap penetration and a non-slip insulating handle for user protection, with dimensional tolerances aligned to Fig 4 of CEI 23-50. The probe’s rigid yet lightweight construction ensures consistent testing across different lighting fixtures, making it essential for manufacturers, labs, and certifiers working to comply with Italian electrical safety norms.

• Shaft Dimensions: Length: 110mm (±0.2mm tolerance); Diameter: 4mm (±0.05mm tolerance) – matches CEI 23-50:2017 Fig 4 critical dimensions
• Handle Specifications: Length: 80mm; Diameter: 12mm; Material: Flame-retardant ABS plastic (UL94 V-0 rating)
• Metal Shaft Material: 304 stainless steel (corrosion-resistant, wear-proof for repeated use)
• Functional Design: Smooth, burr-free shaft tip (prevents damage to lighting fixture enclosures); integrated handle-shaft connection (no loose parts)
• Tolerance Range: All key dimensions comply with ±0.2mm (linear) as specified in CEI 23-50 Fig 4

Test Procedures:

1. Inspect the probe for bent shafts, cracked handles, or rust; confirm dimensions meet CEI 23-50:2017 Fig 4 specs.
2. Power off the lighting equipment under test and place it on a stable, flat surface.
3. Identify potential access points (e.g., gaps between fixture housing, vent openings).
4. Hold the insulating handle, align the shaft tip with the access point, and gently insert until resistance is felt.
5. Check if the shaft can reach hazardous parts (e.g., live wires, sharp components) inside the fixture.
6. Record results to verify compliance with CEI 23-50 safety requirements.

Applications:

• Safety testing of residential lighting fixtures (e.g., ceiling lights, table lamps) for Italian market compliance.
• Compliance checks for commercial lighting installations.