GB/T 18663.2-2021 in English
VALIDMechanical structures for electronic equipment—Tests for metric and inch system—Part 2: Seismic tests for cabinets and racks
- Issued on:2021-10-11
- Implemented on:2022-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 18663.2-2021电子设备机械结构 公制系列和英制系列的试验 第2部分：机柜和机架的地震试验》由TC34（全国电工电子设备结构综合标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
GB/T18663.2-2021, as an equivalent adopted standard of IEC615872:2011, specifies the test methods for electronic equipment cabinets and racks in simulated seismic environments. Compared with the 2007 version, the main technical upgrades include:
- New triaxial acceleration test requirements (Chapter 5.4)
- Relax the top displacement limit from 50mm to 75mm (Clause 6.c)
- Add a quantitative indicator for structural member deformation ≤6mm (Clause 6.a)
Comparison of key technical parameters
| Test type | Zero cycle acceleration | Duration | Damping ratio | Frequency range |
|---|---|---|---|---|
| Uniaxial test | 16m/s² | ≥18s | 2% | 1-50Hz |
| Triaxial test | Horizontal12m/s² Vertical6m/s² | ≥30s | 3% | 1-50Hz |
Key points for test implementation
Specimen configuration specifications
According to clause 4.2 of the standard, the load distribution of the cabinet must comply with the following:
- Each layer of the upper 4 layers has 25kg simulated plug-in (M3)
- Total load in the middle is 60kg (M5)
- Fixed counterweight at the bottom is 90kg (M4)
The actual case shows that When the side panels of a 19-inch rack are not installed, the seismic performance decreases by about 15-20%.
Analysis of Standard Evolution
The development of this standard reflects three technical trends:
- From uniaxial to multi-axial: the newly added triaxial synchronous test is closer to the actual earthquake condition
- From qualitative to quantitative: specific indicators such as 6mm deformation replace fuzzy descriptions
- International coordination: the IEC standard system is fully adopted to facilitate export product certification
Enterprise implementation suggestions
- Give priority to triaxial testing to verify high-end cabinet products
- The door lock structure should be able to withstand a horizontal acceleration of 12m/s²
- It is recommended to conduct the TRS/RRS spectrum analysis required by Clause 5.2 during the R&D stage
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