TIS166-2549 Figure A.1 Preventing Single-pole Insertion Test Gauge

LISUN TIS166-2549 Fig A.1 Test Gauge strictly follows Appendix A Clause 9.101 of Thai standard TIS 166-2549. This gauge is designed to verify that single-pole insertion cannot happen on Thai standard socket-outlets. It checks whether a single pin can independently contact the internal contact tube of socket outlets to avoid electric shock risks caused by partial plug insertion. The gauge is manufactured from anti-corrosion stainless steel with sufficient mechanical strength and fixed weight of 200±5 g, which is a mandatory test fixture for TIS safety certification of Thai socket-outlets.

Specifications:

• Standard Reference: TIS 166-2549 Appendix A, Figure A.1, Clause 9.101
• Material: Stainless steel (non-corrosive metal)
• Total Mass: 200 ± 5 g
• Dimensions: Fully comply with millimetre drawing tolerances specified in Figure A.1
• Supporting Instrument: Electrical indicator, test voltage: 40 V ~ 50 V
• Function: Verify prevention against single-pole insertion of plugs into socket-outlets

Test Procedures:
• Fix the socket-outlet sample, place its mating surface on a horizontal plane with socket openings facing upwards.
• Apply the TIS166-2549 Fig A.1 gauge in all possible accessible positions and angles to the socket openings.
• Connect a 40 V to 50 V electrical indicator between the gauge and socket internal conductive components for contact detection.
• Acceptance requirement: It must NOT be possible for a single gauge pin alone to touch any internal contact tube of the socket-outlet. If single-pole contact occurs, the sample fails the test.
• Complete the test for all socket positions on the test sample.

Applications
• Pre-certification testing for socket-outlets applying for Thailand TIS 166-2549 certification
• Incoming and production quality inspection for Thai standard wall sockets
• R&D performance verification for new socket-outlet designs
• Electrical safety testing laboratories
• Compliance testing to eliminate electric shock hazards from single-pole insertion

TIS166-2549 Figure A.1