Delta CT2000 Series, Руководство пользователя, Страница: 120 / 634

Chapter 9 Specifications

CT2000 Series
9-3
Specification for Operation Temperature and Protection Level
Model Frame Top cover
Conduit
Box
Protection Level
Operation
Temperature
VFDxxxCT43_ _ _ _ _
B, C
Top cover
Removed
Standard
conduit box
IP20/UL Open Type
Flange mounted
models
Body:
-10~50
℃
Heat sink:
-10~40
℃
Wall mounted
models
-10~50
℃
D N/A
No conduit
box
IP00
IP20/UL Open Type
This circled part is IP00,
other areas are IP20
Heat Dissipation System Diagram
Air
exhaust
system
Electric
Control
Case
Motor
Drive
Cooling
Fan
Temperature of air hose
≤
40 C
º
See page 2 3 for Air flow rate for cooling
-
Dust
Collector
Air Velocity Specification at Heat Dissipation Channel
Frame B C D
Model VFD_ _ _CT43_ _ _ _ _ 110 150 185 220 300 370 450 550 750 900
Air Velocity @fc=2kHz (M/sec) 3.5 3.5 3.5 3.5 3.5 7 3.5 4.5 6 8.5
Air Velocity @ default fc (M/sec) 3.5 6.5 8.5 3.5 7 9.5 5.5 6 8.5 9.5
Definition of Air Velocity: When the dissipation channels are at bypass condition, the air speed that equally flows
5cm in front of the heatsink. As shown in the Figure 1 below, dotted lines are required size in mm to
calculate the minimum air velocity (table above) to cool down the heat.
The closer the size of the heat dissipation channel to the size of the heatsink,
the better the result of heat dissipation.