Danfoss VLT AQUA Operating Instructions Manual page 36
Low harmonic drive
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Also See for VLT AQUA:
- Programming manual (298 pages) ,
- Design manual (228 pages) ,
- Instruction (206 pages)
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4 How to Install
External ducts
If additional duct work is added externally to the Rittal cabinet the pressure drop in the ducting must be calculated. Use the charts below to derate the
frequency converter according to the pressure drop.
4
Illustration 4.20: D frame Derating vs. Pressure Change
Drive air flow: 450 cfm (765 m
Illustration 4.21: E frame Derating vs. Pressure Change (Small Fan), P315
Drive air flow: 650 cfm (1105 m
Illustration 4.22: E frame Derating vs. Pressure Change (Large Fan) P355-P450
Drive air flow: 850 cfm (1445 m
Illustration 4.23: F frame Derating vs. Pressure Change
Drive air flow: 580 cfm (985 m
36
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/h)
3
/h)
3
/h)
3
/h)
MG.20.T1.02 - VLT
VLT AQUA Low Harmonic Drive Operating In-
®
is a registered Danfoss trademark
structions
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