This specialized test apparatus is designed to verify the security of lampholder contacts, preventing contact shifting and ensuring live parts of lamp strings remain inaccessible due to friction-related issues.

The test device evaluates lampholder contact security to prevent contact displacement and ensure that live parts of lamp strings remain safely inaccessible, addressing potential hazards caused by friction.

• Compliant with IEC60598-2-20 Clause 113, Figure 2 standards
• Constructed from durable stainless steel
• Precision weights: 15 N and 30 N

The testing procedure involves removing the incandescent lamp and applying specific forces to evaluate contact stability:

• Apply 15 N force for 1 minute to each individual conductor
• Apply 30 N force for 1 minute to both conductors simultaneously
• Forces are applied at a distance of 3 ± 0.8 mm from insertion points
• During testing, contacts must not shift more than 0.8 mm

This comprehensive testing ensures lampholder contacts maintain their position and electrical safety under specified mechanical stress conditions.