IEC/EN 60950 12mm Hemispherical Hard Rod

This 12mm Hemispherical Hard Rod is a specialized test tool for verifying protection of TNV (Telecommunication Network Voltage) circuits in IT and audio/video equipment. Compliant with IEC/EN 60950-1 and UL standards, it features a 12mm diameter conductive rod (80mm long) with a precision hemispherical tip, plus a 50mm diameter baffle plate (5mm thick) to prevent over-insertion. An insulating handle ensures user safety, while tight tolerances guarantee accurate testing—critical for checking if TNV circuit terminals are inaccessible to unauthorized contact.

Standards:

Specifications:
Rod Diameter: 12mm (±0.05mm tolerance; matches TNV circuit gap testing requirements)
Rod Length: 80mm (±0.2mm tolerance; ensures reach to deep TNV terminals)
Hemispherical Tip Radius:  6.0mm (±0.05mm tolerance; mimics real-world contact scenarios)
Baffle Plate Dimensions Diameter: 50mm (±0.2mm); Thickness: 5mm (prevents over-insertion)
Material Composition – Rod: Conductive metal (for reliable circuit contact); – Handle/Baffle: Non-conductive material (insulating, flame-retardant)
Key Tolerances Linear dimensions: ±0.2mm; Diameter/radius: ±0.05mm (aligns with standard precision demands)

Test Procedures:
1. Inspect the rod for bent conductive parts, cracked insulation, or baffle damage; confirm specs are met.
2. Power off the equipment under test (e.g., IT server, AV receiver) and place it on a stable surface.
3. Identify TNV circuit terminals and potential access points (e.g., equipment vents, connector gaps).
4. Hold the insulating handle, align the hemispherical tip with the access point, and insert until the baffle touches the equipment.
5. Check if the rod contacts TNV circuit terminals (via electrical continuity or visual inspection).
6. Record results to verify compliance with applicable safety standards.

Applications:
1. TNV circuit protection testing of IT equipment (e.g., laptops, servers) per IEC/EN 60950-1:2013 Figure 2C.
2. Safety checks for household audio/video devices (e.g., TVs, soundbars) following UL 6500:2024 Figure B.1.
3. Compliance testing for telecom equipment (e.g., routers, modems) to ensure TNV terminals are inaccessible.
4. Quality control for AV musical instruments (e.g., electric keyboards) during production.
5. Pre-certification testing (e.g., CE, UL) for IT/audio/video gear seeking global market entry.

UL6500 Figure B.1 12mm Hemispherical Hard Rod

TIEC/EN 60950 12mm Hemispherical Hard Rod