Ventilation - Toshiba ME00070B Manual

INSTALLATION

4.4 Ventilation

When installing TMS7 starters in an enclosure there must be
sufficient air flow through the enclosure to limit heat rise within
the enclosure. Temperature within the enclosure must be kept
at, or below, the TMS7 maximum ambient temperature rating.
If installing an TMS7 within a totally sealed enclosure a bypass
contactor must be employed to eliminate heat dissipation from
the soft starter during run.
Soft starters dissipate approximately 4.5 watts per amp. The
table below shows air flow requirements for selected motor
currents. If other heat sources are installed in an enclosure
along with the TMS7 an additional air flow allowance must be
made for these items. Note that heat generation from
semiconductor fuses, if used, can be eliminated by installing
these within the bypass loop.
Motor Heat
Amps (watts)
5
Rise
10 45
20 90
30 135
40 180
50 225
75 338
100 450
125 563
150 675
175 788
200 900
250 1125 11.3
300 1350 13.5
350 1575 15.8
400 1800 18.0
450 2025 20.3
500 2250 22.5
550 2475 24.8
600 2700 27.0
10
Required Airflow
m /min m /hour
3 3
C 10 C 5 C 10 C
o o o o
Rise Rise Rise
0.5 0.2 30 15
0.9 0.5 54 27
1.4 0.7 84 42
1.8 0.9 108 54
2.3 1.1 138 69
3.4 1.7 204 102
4.5 2.3 270 135
5.6 2.8 336 168
6.8 3.4 408 204
7.9 3.9 474 237
9.0 4.5 540 270
5.6 678 339
6.8 810 405
7.9 948 474
9.0 1080 540
10.1 1218 609
11.3 1350 675
12.4 1488 744
13.5 1620 810
ME00070B TMS7 SERIES