Gauge for Checking Impossibility of Single-pole Insertion of Plugs Into Socket-outlets without Position Rack

This test gauge is designed to verify whether socket-outlets without a position rack can prevent single-pole insertion of plugs—critical for avoiding electrical shocks in household and similar Class II equipment. It complies with BS EN 50075:1990 Figure 4, featuring precision-machined dimensions to mimic real plug insertion. Weighing 1000g, it uses its own weight to test: when rested between socket pins for 1 minute, it should not touch the plug’s engagement face. Made of durable metal for repeated use, it’s a key tool for ensuring socket safety.

Specifications:
• Key Dimensions: 16.4±0.05mm (critical pin-spacing dimension); 12.5±0.05mm; 12.3±0.1mm (all precision-machined for standard compliance)
• Weight: 1000g (uses own weight for testing, no external force needed)
• Material: High-strength steel (resists wear, maintains dimensional accuracy over time)
• Test Mechanism:  Static load test: rests between socket pins for 1 minute to check engagement face contact
• Applicable Socket Type:  Socket-outlets without position racks (for Class II-equipment plugs)

Test Procedures:
• Inspect the gauge for dents, bending, or dimension wear to ensure it meets specs.
• Place the socket-outlet under test on a flat, stable surface (no power required).
• Align the gauge’s contact points with the socket’s pins, letting it rest freely between them.
• Leave the gauge undisturbed for 1 minute (per standard test duration).
• Check if the gauge touches the plug’s intended engagement face on the socket.
• Record results: “Pass” if no contact, “Fail” if contact occurs (indicating single-pole insertion risk).

Applications:
• Safety testing of non-rewirable two-pole sockets for Class II household appliances (e.g., electric kettles, toasters) per BS EN 50075:1990.
• Quality control for socket manufacturers to prevent non-compliant products from entering the market.
• Third-party certification testing (e.g., CE, GS) for sockets used in EU/UK markets.
• Post-production audits of socket batches to ensure consistent safety performance.
• R&D testing for new socket designs, verifying single-pole insertion prevention before mass production.

Gauge for Checking Impossibility of Single-pole Insertion of Plugs Into Socket-outlets without Position Rack