TIS166-2549 Figure A.10 Flat-Round Pin Minimum Withdrawal Force Gauge

GNGPL-TIS166FA10 TIS166-2549 Fig A.10 Test Gauge is manufactured according to Thai Standard TIS 166-2549 Appendix A, Clause 22, designed for minimum withdrawal force test on current-carrying poles of flat-round pin socket-outlets. The gauge’s own weight provides pulling load to verify the minimum clamping capacity of socket contact sleeves, preventing accidental plug drop-out, power failure and overheating risks. It is an essential test fixture for flat-round pin Thai socket-outlets to acquire TIS safety certification. The gauge is made of non-corrosive stainless steel with critical dimensions complying with drawing tolerances. Its body length is engineered so that its self-weight equals the specified minimum withdrawal force.

Specifications:
• Compliance Standard: TIS 166-2549 Appendix A, Figure A.10, Clause 22
• Applicable Sample: Current-carrying poles of flat-round pin socket-outlets
• Material: Stainless steel (non-corrosive metal)
• Dimensions: Fully comply with all millimeter dimensions and tolerances shown on drawing
• Design Requirement: The body length is sized so that gauge weight equals specified minimum withdrawal force
• Function: Minimum withdrawal force test for current-carrying poles of flat-round pin socket-outlets

Test Procedures:
• Vertically and fully insert the gauge into the current-carrying hole of flat-round pin socket-outlet.
• Apply withdrawal load via the gauge’s self-weight and observe whether the gauge slips out.
• If the gauge does not fall out under its own weight, the clamping force of socket current-carrying pole meets the minimum standard requirement.
• Repeat the test on all current-carrying holes of the sample socket.

Applications:
• Pre-compliance testing for Thailand flat-round pin socket-outlets applying for TIS 166-2549 certification
• R&D clamping performance verification and factory outgoing inspection for flat-round pin Thai standard socket-outlets
• Third-party electrical safety testing laboratories
• Compliance verification for lower clamping limit of flat-round pin socket current-carrying sleeves
• Prevent hazards including loose plugs, poor contact and abnormal thermal ignition

TIS166-2549 Figure A.10