SB1276A Receptacle Test Fixture of UL 498 Figure 118.1

SB1276A Receptacle Test Fixture of UL 498 Figure 118.1 is a professional testing tool designed to verify that the structure and dimensions of plugs and sockets comply with the UL 498 standard. It boasts precise dimensional control, reliable tolerance retention, and excellent material performance, making it an essential device for ensuring the compliance and quality of electrical connection components. Its material properties, including high hardness and low thermal expansion coefficient, guarantee stable and accurate testing results across various working conditions, catering to the strict quality inspection needs of relevant industries.

Specifications
• Material hardness reaches more than 50HRC
• Gauge dimensions and tolerances fully meet UL 498 standard requirements
• Material features a small thermal expansion coefficient for stable dimensional performance
• Surface roughness complies with the specified standard criteria
• Key dimensional parameters include 3.286/3.276, 2.937/2.932 (2 places with ±.005 tolerance), 125R at 1.750, and 0.500 with ±.020 tolerance, as well as 3.938 (with hard dowel configuration)

Test Procedures
• Prepare the plug or socket to be tested and ensure the test fixture is clean and free of debris that may affect measurement accuracy.
• Position the test fixture according to the structural characteristics of the receptacle, aligning the hard dowel and corresponding dimensional gauging parts with the target positions of the product under test.
• Check whether the receptacle can fit into the fixture in accordance with the specified dimensional ranges, verifying the match between the product’s structure and the fixture’s gauging sections.
• Confirm that all key dimensions of the receptacle meet the tolerance requirements specified in UL 498 by observing the fit state and using auxiliary measurement tools if necessary.
• Record the test results, marking whether the tested receptacle conforms to the standard based on the fixture’s gauging feedback.

Applications
• Quality inspection of plugs and sockets in the electronics industry to ensure component compliance with safety and size standards
• Performance verification of electrical appliance connection ports, guaranteeing the compatibility and safety of built-in sockets in electrical products
• Production line testing for plug and socket manufacturers, realizing batch quality control of finished products
• Third-party certification and testing institutions’ compliance assessment of electrical connection devices, providing reliable testing basis for product certification

SB1276A Receptacle Test Fixture of UL 498 Figure 118.1