Danfoss VLT AQUA Instruction Manual page 46
High power
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Also See for VLT AQUA:
- Programming manual (298 pages) ,
- Design manual (228 pages) ,
- Instruction (206 pages)
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3 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
adjustable frequency drive according to the pressure drop.
3
Figure 3.29: D Frame Derating vs. Pressure Change
Drive air flow: 450 cfm (765 m3/h)
Figure 3.30: E Frame Derating vs. Pressure Change (Small Fan), P250T5 and P355T7-P400T7
Drive air flow: 650 cfm (1105 m3/h)
Figure 3.31: E Frame Derating vs. Pressure Change (Large Fan), P315T5-P400T5 and P500T7-P560T7
Drive air flow: 850 cfm (1445 m3/h)
3-32
®
MG.20.P3.22 - VLT
is a registered Danfoss trademark
VLT AQUA High Power Instruction Manual
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