1. Structural Design Should Precisely Meet the Standard
1.1 Shell Structure
Choose a draught-free enclosure with a rectangular structure. Its top and at least three sides should have a double-layer shell design. As the standard requires, there should be a gap of about 150mm between the double-layer shells. Select an open-hole metal material, with the aperture ranging from 1mm to 2mm. The area of the small holes should account for about 40% of the total area of each layer of the shell. This structure can effectively control air convection and avoid the interference of ambient air flow on the lamp test, ensuring the stability of the test environment.
1.2 Inner Surface Treatment
A draught-free enclosure with a matte-painted inner surface is more in line with the standard. This design can reduce light reflection, creating a more accurate test environment for lamp testing, so that the test results can more truly reflect the lamp performance.
1.3 Door Design
Have a single-door design for each layer, with the door gaps staggered to prevent air leakage through the gaps affecting the ventilation rate.
2. Dimension Specifications Must Strictly Follow the Standard
2.1 Internal Space
The draught-free enclosure should have at least three basic internal dimensions, each at least 900mm. This ensures that various common lamps can be accommodated for testing. Meanwhile, there should be a gap of at least 200mm between the inner surface and any part of the largest lamp to avoid influencing the test results due to limited space.
2.2 Peripheral Gaps
Set a gap of at least 300mm above the top of the draught-free enclosure and around the punched sides. This fully guarantees that the test environment is free from external interference, strictly following the test environment specifications required by the standard.
3. Material Selection Must Comply with the Standard Provisions
3.1 Shell Material
Give priority to a draught-free enclosure with a shell made of cold-rolled metal punched and then sprayed with matte black paint. This material not only ensures draught-proof performance but also has excellent rust and corrosion resistance, meeting the standard’s requirements for the durability and functionality.
3.2 Mesh Panel Material
The mesh panel should be made of high-quality steel plate punched by a high CNC punching machine to accurately ensure the aperture and spacing of the mesh holes.
The draught-free enclosure made by PEGO is strictly designed to meet the test requirements of IEC60598-1, the dimension of the draught-free enclosure can customize to fit the largest lamps, and configure with different mounting fixtures, no matter streetlight, ceiling lamp or table lamps, user can easily to install inside the draught-free enclosure.
