풍기 진동 기준
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JBT8689-98, 진동은 4.5mm/s로 합격입니다.2. 98년 버전도 4.5mm/s가 아니며, 강성 지지체의 진동 속도 제곱근 한계값은 4.6mm/s이고, 유연성 지지체의 경우는 7.1mm/s입니다.
3. 이는 ‘진동’이지 ‘충격’이 아닙니다.
4. 이 표준은 환기기에만 적용됩니다.
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