These examples show an applicable heatsink selection for drive model 2006 when C6-01 = 1 [Normal / Heavy Duty Selection = Normal Duty Rating].
These are examples of calculations for the external heatsink from MIZUTANI ELECTRIC IND.CO., LTD.
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Universal Type Heat Sink EF Series, EF (98) L:150 (thermal resistance RθEHS = 1.6 K/W)
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Universal Type Heat Sink EK Series, EK (95) L:150 (thermal resistance RθEHS = 1.1 K/W)
Table 1. External Heatsink Selection
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Symbol
|
Value
|
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PLoss
|
25.0 W
|
|
THSP_max
|
90 °C (194 °F)
|
|
TAmb
|
40 °C (104 °F)
|
|
RθHSP
|
0.05 K/W
|
|
RθHSP-EHS
|
Ath
|
H = 128 mm
D = 68 mm
Ath = 0.7 × 0.128 m × 0.068 m = 6.1 × 10-3 m2
|
|
λComp
|
2.0 W/(m∙K)
Thermal conductivity of Oil-based compound X-23-7795 from Shin-Etsu Chemical Co., Ltd.
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|
dComp
|
100 μm
Recommended compound thickness (when applied)
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|