A.6 Drive Derating Data
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual 361
Specifications
A
NEMA Type 1
Drive operation between -10°C and 40°C allows 100% continuous current without derating. Operation between 40°C
and 50°C requires output current derating.
Figure A.7
Figure A.7 Ambient Temperature and Installation Method Derating (L8-35 = 2)
External Heatsink Installation, Finless Drive
Drive operation between -10°C and 40°C allows 100% continuous current without derating. Operation between 40°C
and 45°C requires output current derating.
Figure A.8
Figure A.8 Ambient Temperature and Installation Method Derating (L8-35 = 3)
u Altitude Derating
The drive standard ratings are valid for an installation altitude up to 1000 m. If the altitude exceeds 1000 m both the drive
rated voltage and the rated output current must be derated for 1% per 100 m. The maximum altitude is 3000 m.
100
85
0
L8-35=2: NEMA Type 1
-10
40
50
Drive Rating
(%)
L8-12
(Ambient temp: °C)
100
92
0
L8-35=3: Finless Model or
External Heatsink lnstallation
-10
40
45
Drive Rating
(%)
L8-12
(Ambient temp: °C)
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