Noise Criterion Curves - Technibel CA250X5TAA Technical & Service Manual

1. SPECIFICATIONS

1-8 Noise Criterion Curves

MODEL : CA250X5TAA
SOUND LEVEL : HIGH 37 dB(A), NC 30
LOW
CONDITION : Distance 1 m, Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MODEL : CA360X5TAA
SOUND LEVEL : HIGH 43 dB(A), NC 36
LOW
CONDITION : Distance 1 m, Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
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.
31 dB(A), NC 22
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
36 dB(A), NC 24
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
– 25 –
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
APPROXIMATE
20
THRESHOLD OF
CONTINUOUS
NOISE
10
250 500 1000 2000 4000 8000
60 125
BAND CENTER FREQUENCIES, Hz
MODEL : GR360X7TAA
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
APPROXIMATE
20
THRESHOLD OF
CONTINUOUS
NOISE
10
250 500 1000 2000 4000 8000
60 125
BAND CENTER FREQUENCIES, Hz