UL 498 Figure SC 21.1 Standard Grounding Pin SB0704A

This UL 498 Figure SC 21.1 Standard Grounding Pin SB0704A is specifically engineered to meet the rigorous requirements outlined in Figure SC 21.1 of the UL 498 standard (“Attachment Plugs and Receptacles”). It is a critical component designed for verifying the performance and compliance of grounding systems in attachment plugs and receptacles, ensuring that these electrical components maintain reliable grounding functionality— a key factor in preventing electrical hazards such as shocks or short circuits. With precise structural and dimensional design, the grounding pin enables accurate testing and validation, making it an essential tool for manufacturers, testing labs, and R&D teams focused on meeting UL 498 safety standards for electrical products.

Specifications:
• Complies with UL 498 standard, specifically aligning with the requirements of Figure SC 21.1 (“Standard grounding pin”)
• Features a finish of 8 microinches, ensuring surface quality and durability for consistent testing performance
• Incorporates a grinding direction requirement to meet structural precision standards
• Has an overall diameter of 0.5 inches (equivalent to 12.7 millimeters)
• Boasts a full spherical tip with a radius of 0.1845 inches (equivalent to 4.89 millimeters), designed for proper mating and contact in grounding tests
• Engineered specifically for grounding performance verification of attachment plugs and receptacles

Test Procedures:
• Prepare the attachment plug or receptacle sample to be tested, ensuring it is free from visible damage, properly assembled, and meets pre-test conditions as specified by UL 498.
• Position the standard grounding pin on a stable, level testing platform, and ensure the pin is properly secured to prevent movement during the test.
• Align the sample (plug or receptacle) with the grounding pin, ensuring the sample’s grounding interface is correctly positioned to mate with the pin’s spherical tip, following the dimensional guidelines of UL 498 Figure SC 21.1.
• Initiate the grounding performance test by establishing contact between the sample’s grounding component and the standard grounding pin, applying the specified test forces or voltage (as required by UL 498) to simulate real-world operating conditions.
• Monitor key test parameters throughout the process, including contact resistance, continuity of the grounding path, and stability of the connection, recording all relevant data to assess performance.
• After completing the test, disconnect the sample from the grounding pin, inspect both the pin and the sample for any signs of wear, damage, or deformation, and document the test results to confirm whether the sample meets UL 498 grounding performance requirements.

Applications:
• Quality control testing in the manufacturing of attachment plugs and receptacles, used to verify that each finished product’s grounding system complies with UL 498 standards before shipment, ensuring product safety.
• UL certification compliance testing for electrical product manufacturers, as the grounding pin enables accurate validation of grounding performance— a mandatory step for obtaining UL 498 certification for plugs and receptacles.
• R&D testing in the development of new plug and receptacle models, helping engineers evaluate the design of grounding interfaces, optimize contact performance, and ensure new products meet safety standards from the early development stage.
• Third-party testing laboratories conducting impartial safety assessments of electrical products, providing a standardized tool to test and validate the grounding functionality of client-submitted plugs and receptacles.
• Incoming quality inspection for distributors or importers of attachment plugs and receptacles, used to spot-check batches of purchased products to confirm their grounding systems meet • UL 498 requirements and maintain consistent safety performance.

UL 498 Figure SC 21.1 Standard Grounding Pin SB0704A