– 25 –
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
250
500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0dB=0.0002
µ
bar)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
REMARKS
: 1. Value obtained in the actual place where the unit is installed may be slightly higher than
the values shown in this graph because of the conditions of operation, the structure of
the building, the background noise and other factors.
2. The test results were obtained from an anechoic room.
NOTE
To evaluate “Noise level” the maximum number of the measured OCTAVE BAND
SOUND PRESSURE LEVEL is used. Read the number on each BAND CENTER
FREQUENCIES (horizontal axis) ranging from 63Hz to 8000Hz and select the maximum
value (vertical axis) among them.
MODEL
: GR250X5TAA - GR250X7TAA
SOUND LEVEL : 53 dB(A),
NC 45
CONDITION
: Distance 1m,
Height 1m
SOURCE
: 220 - 230 - 240 V, 1 Phase, 50 Hz
: 380 - 400 - 415 V, 3 Phase, 50 Hz
90
80
70
60
50
40
30
20
10
60
125
250
500
1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
CONTINUOUS
NOISE
NC-70
NC-50
NC-60
NC-40
NC-30
NC-20
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0dB=0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
MODEL
: SPA250X5TAA
SOUND LEVEL : HIGH
45 dB(A),
NC 43
LOW
37 dB(A),
NC 34
CONDITION
: Distance 1m,
Under the unit 1m
SOURCE
: 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
250
500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0dB=0.0002
µ
bar)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MODEL
: SPA360X5TAA
SOUND LEVEL : HIGH
47 dB(A),
NC 45
LOW
39 dB(A),
NC 34
CONDITION
: Distance 1m,
Under the unit 1m
SOURCE
: 220 - 230 - 240 V, 1 Phase, 50 Hz
SOUND LEVEL : 54 dB(A),
NC 45
CONDITION
: Distance 1 m,
Height 1 m
SOURCE
: 380 - 400 - 415 V, 3 Phase, 50 Hz
90
80
70
60
50
40
30
20
10
60
125
250
500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
CONTINUOUS
NOISE
NC-70
NC-50
NC-60
NC-40
NC-30
NC-20
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0dB=0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
MODEL
: GR360X7TAA
BAND CENTER FREQUENCIES, Hz
1. SPECIFICATIONS
1-8
Noise Criterion Curves
