Reference Plug Gauge According to UL 498 Figure 74.1

This Reference Plug Gauge According to UL 498 Figure 74.1 is precision-engineered to fully comply with the specifications outlined in UL 498 Figure 74.1, a critical standard for attachment plugs and receptacles. It serves as a reliable benchmark tool for verifying the dimensional accuracy, fit, and compatibility of receptacles, ensuring that these electrical products meet the rigorous safety and performance requirements set by UL 498. By providing consistent and standardized testing references, it supports efficient quality control and compliance verification in manufacturing, R&D, and certification processes.

Specifications:
• Strictly adheres to UL 498 standard requirements, aligning with Figure 74.1 specifications for reference plug testing
• Incorporates standardized pin configurations and spacing to match UL 498-compliant receptacle designs
• Manufactured from high-quality, durable materials to ensure long-term dimensional stability and repeatable test results
• Engineered with smooth, burr-free pin surfaces to prevent damage to test samples during verification
• Dimensional tolerances optimized to meet the strict precision requirements of UL 498 for reference tools
• Compatible with both standard and specialized receptacles covered by UL 498 guidelines

Test Procedures:
• Prior to testing, inspect the reference plug gauge for any damage, corrosion, or dimensional deviations, and confirm it is properly calibrated.
• Prepare the receptacle sample, ensuring it is free from cracks, deformation, loose components, or contamination that may affect test results.
• Secure the receptacle sample in a stable, flat fixture to maintain proper positioning during the test.
• Align the reference plug gauge with the receptacle’s opening, ensuring the gauge’s pins are correctly oriented to match the receptacle’s contact layout.
• Insert the gauge into the receptacle with a steady, controlled force—avoiding excessive pressure that could damage either the gauge or the sample.
• Verify the fit between the gauge and the receptacle: check for proper engagement of pins with receptacle contacts, absence of excessive play, and compliance with dimensional clearances specified in UL 498.
• Remove the gauge from the receptacle slowly and inspect both the gauge and sample for any signs of wear or damage from the insertion process.
• Record whether the receptacle meets the dimensional and fit requirements outlined in UL 498 Figure 74.1 based on the test results.
• Document all observations, including any deviations from standard specifications, and repeat the process for additional samples to ensure consistency.

Applications:
• Quality control testing of receptacles in manufacturing facilities to verify dimensional accuracy and compatibility with UL 498 standards.
• Compliance assessment by third-party certification bodies and testing laboratories for UL 498 certification of electrical products.
• R&D testing for the design validation and optimization of receptacles, ensuring alignment with industry safety and performance guidelines.
• Routine inspection of production lines producing attachment receptacles for household, commercial, and industrial applications.
• Dimensional verification of receptacle components supplied by third-party vendors to ensure conformance with UL 498 requirements.
• Post-production quality audits to confirm the reliability and compatibility of receptacles before market release.
• Calibration reference for in-house testing equipment used in receptacle manufacturing and quality assurance processes.

Reference Plug Gauge According to UL 498 Figure 74.1