SB0705 Oversize Grounding Pin According to Figure SC 25.1 of UL 498

This SB0705 Oversize Grounding Pin According to Figure SC 25.1 of UL 498 is meticulously designed to adhere to the specifications outlined in Figure SC 25.1 of the UL 498 standard (“Attachment Plugs and Receptacles”). It serves as a specialized testing component for evaluating the compatibility, fit, and grounding performance of attachment plugs and receptacles, with a focus on verifying whether these electrical devices can accommodate slightly larger grounding interfaces while maintaining reliable grounding functionality. The pin’s precise dimensional and structural design ensures consistent, accurate testing results, making it an indispensable tool for manufacturers, testing institutions, and R&D teams committed to meeting the strict safety and performance requirements of UL 498 for electrical products.

Specifications:
• Complies with UL 498 standard, specifically matching the requirements of Figure SC 25.1 (“Oversize grounding pin”)
• Features a surface finish of 8 microinches, ensuring high surface quality and durability for long-term testing use
• Requires grinding in a specified direction to meet structural precision and testing accuracy standards
• Has a nominal diameter of 0.5 inches, with a key diameter range of .203 to .204 inches
• Includes a spherical radius on the tip, a critical design element for proper mating with plug/receptacle grounding interfaces
• Incorporates dimensional parameters of .840 to .843 inches, aligned with the oversize design requirements of UL 498 Figure SC 25.1
• Engineered exclusively for testing the oversize grounding interface performance of attachment plugs and receptacles

Test Procedures:
• Prepare the attachment plug or receptacle sample for testing, ensuring it is free from physical damage, assembled correctly per product specifications, and meets pre-test conditions defined by UL 498.
• Secure the oversize grounding pin on a stable, level testing platform, ensuring it is fixed firmly to prevent displacement during the test process.
• Align the sample (plug or receptacle) with the oversize grounding pin, ensuring the sample’s grounding port is properly positioned to mate with the pin’s spherical tip, in accordance with the dimensional guidelines of UL 498 Figure SC 25.1.
• Initiate the fit and grounding performance test by inserting the oversize grounding pin into the sample’s grounding port (or establishing contact as required), applying the specified test force (consistent with UL 498 standards) to simulate real-world usage scenarios.
• Monitor key test indicators throughout the process, including the ease of insertion/removal (to assess fit), continuity of the grounding path, and contact stability, while recording all relevant data for performance evaluation.
• After test completion, carefully remove the sample from the oversize grounding pin, inspect both the pin and sample for signs of wear, deformation, or damage, and document the test results to confirm whether the sample complies with UL 498’s oversize grounding interface requirements.

Applications:
• Quality control testing in the manufacturing of attachment plugs and receptacles, used to verify that finished products can accommodate oversize grounding interfaces (as specified by UL 498) while maintaining safety and performance, ensuring only compliant products leave the factory.
• UL certification testing for electrical product manufacturers, as the oversize grounding pin enables accurate validation of a product’s compatibility with oversize grounding standards— a necessary step to obtain UL 498 certification for plugs and receptacles.
• R&D testing in the development of new plug and receptacle models, helping engineers optimize the design of grounding ports, ensure compatibility with oversize grounding components, and validate the robustness of grounding systems during the product development phase.
• Third-party testing laboratories conducting impartial safety and compliance assessments, providing a standardized tool to test and verify the oversize grounding performance of client-submitted attachment plugs and receptacles.
• Incoming quality inspection for distributors or importers of electrical plugs and receptacles, used to spot-check batches of purchased products to confirm their grounding ports meet UL 498’s oversize compatibility requirements, ensuring consistent safety across inventory.

SB0705 Oversize Grounding Pin According to Figure SC 25.1 of UL 498