Noise Levels(Vmh-E); Nc Curves(Vmh-E) - Mitsubishi Electric PEFY-P-VML-E Data Book

2-4. Noise levels(VMH-E)

Aux.duct
1m
❇ PEFY-P40~140VMH-E
Low : 50Pa (at 220V) / 100Pa (at 230, 240V)
Mid : 100Pa (at 220V) / 150Pa (at 230, 240V)
High : 200Pa (at 220, 230, 240V)
❇ PEFY-P200, 250VMH-E
Low : 110Pa (at 380V) / 130Pa (at 400, 415V)
High : 220Pa (at 380V) / 260Pa (at 400, 415V)

2-5. NC curves(VMH-E)

PEFY-P40,50VMH-E
70
220V-50/60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250
OCTAVE BAND CENTER FREQUENCIES (Hz)
PEFY-P40,50VMH-E
70
220V-50/60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250
OCTAVE BAND CENTER FREQUENCIES (Hz)
2m
Measurement location
(External static
pressure 50Pa)
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
500 1000 2000 4000 8000
(External static
pressure 200Pa)
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
500 1000 2000 4000 8000
Noise level at anechoic room (Low-High)
Model
220V
PEFY-P40, 50
VMH-E
230, 240V
220V
PEFY-
P63VMH-E
230, 240V
220V
PEFY-
P71VMH-E
230, 240V
220V
PEFY-
P80VMH-E
230, 240V
220V
PEFY-P100,
125, 140VMH-E
230, 240V
380V
PEFY-
P200VMH-E
400, 415V
380V
PEFY-
P250VMH-E
400, 415V
PEFY-P40,50VMH-E
70
220V-50/60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250 500
OCTAVE BAND CENTER FREQUENCIES (Hz)
PEFY-P63VMH-E
70
220V-50/60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250 500
OCTAVE BAND CENTER FREQUENCIES (Hz)
1- 9
Unit : dB(A)
External static pressure❇
Low Mid High
25-30
27-34 30-40
30-34
31-37 31-41
31-36
32-38 36-43
35-39
36-41 38-44
30-36
32-39 35-43
34-39 35-41 37-44
35-41 37-43
32-39
38-43 39-45
37-41
34-42
32-40 36-46
38-44
36-42 38-47
–
42 45
–
44 47
–
50 52
–
52 54
(External static
pressure 100Pa)
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
1000 2000 4000 8000
(External static
pressure 50Pa)
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
1000 2000 4000 8000