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Acoustic noise
The acoustic interference from the frequency
converter comes from two sources:
1. DC intermediate circuit coils
2. Integral fan.
Below are the typical values measured at a distance
of 1 m from the unit at full load and are nominal
maximum values:
VLT 7002-7011 380-460 V
IP 20 units:
VLT 7016-7072 380-460 V
IP 20 units:
Derating for ambient temperature
The ambient temperature (T
temperature allowed. The average (T
over 24 hours must be at least 5ºC lower.
MG.70.A1.02 - VLT is a registered Danfoss trademark
50 dB(A)
61 dB(A)
) is the maximum
AMB,MAX
) measured
AMB,AVG
VLT® 7000 Booster
If VLT 7000 Booster is operated at temperatures
above 45 ºC, a derating of the continuous
output current is necessary.
121
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