IEC 60884-1 Socket Test Fixture Temperature Rise Dark Container

The SN2222-1 Temperature Rise Dark Container is a standard test fixture designed strictly for the temperature rise test specified in IEC 60884-1:2022 Clause 19. It is dedicated to concealed electrical accessories, recessed sockets, and flush-mounted wall outlets.

When concealed sockets are installed inside building walls, heat generated during loading cannot dissipate freely as it would with exposed products. This dark container simulates the real embedded installation environment in the wall, constraining heat transfer conditions as defined by the standard. Testers can carry out temperature rise testing under realistic thermal confinement to verify whether the temperature of live parts, terminals, and insulating materials stays within safe limits.

Over-temperature risk in concealed sockets may cause insulation aging, melting, and even fire hazards. This dark container provides repeatable, standardized thermal boundary conditions so laboratories and socket manufacturers can complete type tests, factory verification, and third-party certification smoothly. This model adopts the VDE type single gang concealed box structure, matching VDE recessed socket test requirements widely accepted by European testing labs.

• ✓Complies fully with the IEC 60884-1:2022 Clause 19 temperature rise test requirement for concealed electrical accessories
• ✓VDE standard single gang concealed box construction, consistent with European socket certification test specifications
• ✓Simulates the actual wall embedding thermal environment, restricting heat dissipation to reproduce real service conditions
• ✓Stable wooden outer enclosure with standard internal cavity structure and good thermal insulation performance
• ✓Standard internal mounting space for single-gang concealed socket samples, allowing easy fixture installation and sample replacement
• ✓High repeatability for temperature rise measurement, suitable for in-house R&D testing and third-party laboratory certification
• ✓Widely used with temperature data loggers and thermocouple systems for a complete temperature rise test setup

• Flush / concealed wall sockets (VDE single gang type)
• Recessed electrical accessories for the European market
• Socket type testing for IEC 60884-1 & VDE certification
• Laboratory certification testing, product development verification, and batch release inspection

This dark container is a mandatory auxiliary fixture rather than a standalone tester. It works together with power supply units, current loading equipment, and thermocouple temperature acquisition instruments. The wooden outer frame mimics the thermal mass of a building wall, while the built-in VDE single gang concealed box holds the test socket sample. During energized loading, heat accumulates inside this closed cavity just as it would in a socket buried inside a plastered wall. Engineers capture temperature readings to judge whether the product meets standard temperature limits.