TM 5-3895-374-24-1
Installation
ALTIVAR 0,75 to 30 kW
Calculation example
ATV-452U40 (4 kW) mounted In a dust and damp protecting enclosure with Internal cooling fan
Maximum external temperature 30°C.
- Power dissipated inside the enclosure 165 W.
- Maximum thermal resistance:
Rth = 60 - 30 = 0,18°C/W
165
Minimum useful heat exchange surface area
S 0,12 =0,67 m2
S= 0,18
Useful heat exchange surface area of a DE1-HB543 wall mounted enclosure:
- height 600 mm,
- width 500 mm,
-depth 250 mm
S = (0,6 x 0,5) + (0,25 x 0,5) + 2 (0,6 x 0,25) = 0,725 m2
Based on the initial hypotheses, the enclosure is suitable
Recess mounting
In order to reduce power dissipated In the enclosure, the speed controller can be recess mounted In the back of
the enclosure, with the heatsink on the outside This arrangement necessitates a cut out and a mounting kit as
defined In the section on mounting In dust and damp protecting enclosure (p 74) As before, in order to obtain a
temperature which does not exceed 60° C, the air Inside the enclosure must be kept cool by the addition of a
cooling fan, which can have a lower flow rate (44 dm3/s, 100 CFM) or by using the ventilation kit (p 75)
The minimum metal enclosure dimensions enabling the mounting of one speed controller only, with an internal
fan, In an external ambient air temperature < 30° C, are given in the table below
Mounting kit
Reference
H
W
D
Pi
reference
ALTIVAR
mm
mm
mm
W
VY1-A451U1501
ATV-452075 (M) (N)
500
300
200
70
ATV452U15 (N)
500
300
200
85
VY1-A451U4001
ATV-452U22 (M) (N)
500
400
250
85
ATV-452U30
500
400
250
90
ATV-452U40 (M) (N) (S)
500
400
250
105
VY1-A451U7501
ATV-452U55 (M) (N)
600
400
250
120
ATV452U75 (M) (N)
600
400
250
80
VY1-A451D1101
ATV-452U75S
700
500
250
95
ATV-452D11 (M) (N)
700
500
250
95
VY1-A45101501
ATV452D15 (M) (N) (S)
700
500
250
110
ATV-452D18N
700
500
250
130
ATV-452D22 (N)
700
500
250
130
VY1-A451D3001
ATV-452D30 (N) (S)
900
700
300
150
For dimensions in inches
multiply by 0,03937
Pi = power dissipated In the enclosure by a recess mounted speed controller
(page 3-166)
