BS 546 Figure 2 5A Withdrawal-Pull Gauge for Contact Effectiveness Testing

BS 546 Figure 2 5A Withdrawal-Pull Gauge for Contact Effectiveness Testing is a precision measurement instrument engineered to evaluate the contact effectiveness, structural compliance, and dimensional accuracy of 5A plugs and sockets in accordance with BS 546 standards, specifically as detailed in Figure 2 of BS 546 (“Two-pole and earthing-pin plugs, socket-outlets and adaptors. Specification”). This gauge employs a withdrawal-pull methodology to validate critical contact performance parameters, strictly adhering to the standard’s requirements for dimensions, tolerances, material properties, hardness, and surface roughness. With material hardness exceeding 50HRC and a low thermal expansion coefficient, the gauge ensures exceptional dimensional stability and reliable testing results, making it an essential instrument for verifying the quality of 5A electrical connection components.

Specifications

• Compliance standard: BS 546 (“Two-pole and earthing-pin plugs, socket-outlets and adaptors. Specification”) Figure 2
• Application rating: 5A
• Core function: Assesses contact effectiveness via withdrawal-pull testing
• Nominal contact diameter: 0.277 inches
• Gauge capacity: 8 ounces
• Material hardness: Over 50HRC
• Material thermal expansion coefficient: Low
• Key attributes (dimensions, tolerances, material, surface roughness): Fully compliant with BS 546 standard requirements
• Dimensional stability: Stable and reliable due to low thermal expansion coefficient
• Design features: Radiused end forming part of a sphere; Includes specified E radius as per standard
• Tolerances: Conforms to BS 546 Table 19 requirements (+0.0000/-0.0003 in. for diameter, ±0.001 in. for relevant dimensions, +1 dram/-0 dram for weight, ±0.005 in. for auxiliary parameters)
• Adaptability option: May be modified to accommodate additional weight for testing 15-ampere current-carrying contacts (per standard note)

Test Procedures

• Prepare the 5A plug or socket sample for testing, ensuring it is free from damage, dirt, cor… (truncated)