ABB ACS 502 Series, Инструкция по установке и запуску, Страница: 57 / 92

Chapter 4 – ACS 504 Installation Instructions
ACS 502 Installation & Start-up Manual 4-7
Figure 4-5 shows the cooling requirements of the ACS 504.
Figure 4-6 ACS 504 Cooling Requirements (side view)
Environment
Inverter Modules
The Inverter Modules are provided with one or more cooling fans which are
located on the bottom of the unit.
The maximum allowed ambient temperature, the temperature of the air
entering the unit, is 104
°
F (40
°
C).
The cooling air must be clean and free from corrosive agents (according to
ISA G1). When necessary the required cooling should be arranged by using
specially filtered air.
The maximum total power losses of the modules and required cooling air
volumes with free space requirements are shown in Table 4-3. For
dimensional reference for the free space around the module, see Figure 4-1.
Included in Table 4-3 are recommendations for total open areas in the
enclosure walls or door for cooling air inlet and outlet. If the total open areas
are smaller or if the air path is very curved, the cooling capacity may be
reduced due to reduced air flow.
ACS504-
Cool
Area
Hot
Area
Main air
flow out
Main air
flow in
Circulating air
flow inside cabinet
Air circulating
preventive plate
Plate should be
on top of the
unit not on the bottom
Circulating air flow
outside the cabinet
should be prevented