기술연구소
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기술 발전을 선도하는 NSV 기술연구소입니다.
방진 선정기준표
VIBRATION ISOLATION REFERENCE TABLE
장비형식 동력 및
용량구분
장비 회전수 장비 설치 위치 참고사항
Slab on Grade Floor span
Up to 6m 6 to 9m 9 to 12m
Base
Type
Isolator
Tye
Min Defl.,
mm
Base
Type
Isolator
Tye
Min Defl.,
mm
Base
Type
Isolator
Tye
Min Defl.,
mm
Base
Type
Isolator
Tye
Min Defl.,
mm
Refrigeration
Machines
and Chillers
Reciprocating All All A 2 6.4 A 4 19 A 4 38 A 4 64 2,3,12
Centrifugal,
Scroll
All All A 1 6.4 A 4 19 A 4 38 A 4 38 2,3,4,8,12
Screw All All A 1 25 A 4 38 A 4 64 A 4 64 2,3,4,12
Absorption All All A 1 6.4 A 4 19 A 4 38 A 4 38
Air Cooled
recip., Scroll
All All A 1 6.4 A 4 38 A 4 38 A 4 64 2,4,5,12
Air Cooled
Screw
All All A 4 25 A 4 38 B 4 64 B 4 64 2,4,5,8,12
Air
Compressors
and
Vacuum
Pumps
Tank-mounted
hortz.
≥ 7.5 All A 3 19 A 3 19 A 3 38 A 3 38 3,15
≥ 11 All C 3 19 C 3 19 C 3 38 C 3 38 3,15
Tank-mounted
vert.
All All C 3 19 C 3 19 C 3 38 C 3 38 3,15
Base-mounted All All C 3 19 C 3 19 C 3 38 C 3 38 3,14,15
Large
reciprocating
All All C 3 19 C 3 19 C 3 38 C 3 38 3,14,15
Pumps Close-coupled ≥ 5.6 All B 2 6.4 C 2 19 C 2 19 C 3 19 16
≥ 7.5 All C 3 19 C 2 19 C 2 19 C 3 38 16
Large Inline 37 to 19 All A 3 19 A 3 38 C 3 38 A 3 38
≥ 22 All A 3 38 A 3 38 C 3 38 A 3 64
End suction
and split case
≥ 7.5 All C 3 19 C 3 19 A 3 38 C 3 38 16
37 to 93 All C 3 19 C 3 19 A 3 38 C 3 64 10, 16
≥ 110 All C 3 19 C 3 38 C 3 64 C 3 89 10, 16
Packaged
pump systems
All All A 3 19 A 3 19 C 3 38 C 3 64
Cooling
Towers
All All Up to 300 A 1 6.4 A 4 89 C 4 89 A 4 89 5, 8, 18
301 to 500 A 1 6.4 A 4 64 A 4 64 A 4 64 5, 18
501 to up A 1 6.4 A 4 19 A 4 19 A 4 38 5, 18
Bollers Fire-tube All All A 1 6.4 B 4 19 A 4 38 B 4 64 4
Water-tube,
copper fin
All All A 1 3 A 4 3 B 4 3 B 4 6.4
Axial Fans,
Plenum Fans,
Cabinet Fans,
Fan Sections,
Centrifugal,
Inline Fans
Up to 560mm,
diameter
All All A 2 6.4 A 1 19 B 1 19 C 3 19 4,9
610mm
diameter
and up
≥ 50 Pa SP Up to 300 B 3 64 C 3 89 A 3 89 C 3 89 9,8
301 to 500 B 3 19 B 3 38 A 3 64 C 3 64 9,8
501 to up B 3 19 B 3 38 C 3 38 B 3 38 9,8
≥ 501 Pa SP Up to 300 C 3 64 C 3 89 C 3 89 C 3 89 3,8,9
301 to 500 C 3 38 C 3 38 C 3 64 C 3 64 3,8,9
501 to up C 3 19 C 3 38 C 3 38 C 3 64 3,8,9
Centrifugal
Fans
Up to 560mm,
diameter
All All B 2 6.4 B 3 19 C 3 19 B 3 38 9,19
610mm
diameter
and up
≥ 30 Up to 300 B 3 64 B 3 89 B 3 89 B 3 89 8,19
301 to 500 B 3 38 B 3 38 B 3 64 B 3 64 8,19
501 and up B 3 19 B 3 19 B 3 19 B 3 38 8,19
≥ 37 Up to 300 C 3 64 C 3 89 C 3 89 C 3 89 2,3,8,9,19
301 to 500 C 3 38 C 3 38 C 3 64 C 3 64 2,3,8,9,19
501 and up C 3 25.4 C 3 38 C 3 38 C 3 64 2,3,8,9,19
Centrifugal
Fans
All All All A 1 6.4 A 4 19 C 4 38 AVD 4 38
Centrifugal
Fans
All All All A 1 6.4 A 4 19 C 4 38 AVD 4 38
Packaged AH,
AC, H and
V units
All ≥ 7.5 All A 3 19 A 3 19 A 3 19 A 3 19 19
≥ 11 Up to 300 A 3 19 A 3 89 A 3 89 C 3 89 2,4,8,19
≥ 1 kpa Sp 301 to 500 A 3 19 A 3 64 A 3 64 A 3 19 4,19
501 and up A 3 19 A 3 38 A 3 38 A 3 38 4,19
> 1 kpa sp11 Up to 300 B 3 19 C 3 89 C 3 89 C 3 89 2,3,4,8,9
> 1 kpa Sp 301 to 500 B 3 19 C 3 38 C 3 64 C 3 64 2,3,4,9
501 and up B 3 19 C 3 38 C 3 38 C 3 64 2,3,4,9
Base Type
> TYPE A
≥ No Base
> TYPE B
≥ Structural steel rails or base
> TYPE C
≥ Concrete inertia base
> TYPE D
≥ Curb-mounted base
Isolator Type
> TYPE 1
≥ Rubber Pad
> TYPE 2
≥ Rubber Mount
> TYPE 3
≥ Spring Isolator
> TYPE 4
≥ Restrained Spring Isolator
> TYPE 5
≥ Thrust Restraint