GB/T 18663.5-2022 in English
VALIDMechanical structures for electronic equipment―Tests for metric and inch system―Part 5:Seismic tests for chassis,subracks and plug-in units
- Issued on:2022-10-12
- Implemented on:2023-05-01
- File Format:PDF
- Delivery:Via email within 5 business days
$301.00
《GB/T 18663.5-2022电子设备机械结构 公制系列和英制系列的试验 第5部分：机箱、插箱和插件的地震试验》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
Core technical requirements of test standards
| Test category | Mass range | Seismic acceleration |
|---|---|---|
| Class A plug-in | 0.5～10kg | 16m/s² single axis |
| Class B chassis/plug-in box | 23～181kg | Three axes: 6-12m/s² |
Core test configuration requirements
- The plug-in under test needs to be placed in a simulated load state, and 1U installation space is reserved on the edge
- The T-connector needs to be fixed according to the manufacturer's torque parameters
- The panel input and output lines need to be dynamically fixed and protected
Key steps for test implementation
- Clamp the equipment to the hydraulic vibration table according to the standard
- Preload sine wave for baseline resonance detection
- Perform earthquake simulation in the three axial directions perpendicular to each other
- Monitor and record
Seismic waveform characteristic parameters
| Type | Single-axis waveform | Triaxial waveform |
|---|---|---|
| Duration | ≥18 seconds | ≥30 seconds |
| Damping ratio | 2% | 3% |
Implementation suggestions and precautions
It is recommended to use a restructured support beam rigid table to avoid testing virtual frequency response; the frequency response range is allowed to be
①≥0.5Hz ②≤50Hz ±20% error correction for exceeding the range
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