Altitude Derating - YASKAWA A1000 Series Technical Manual

A.6 Drive Derating Data
IP00 Enclosure
Drive operation between -10°C and 50°C allows 100% continuous current without derating.
Side-by-Side Mounting
Drive operation between -10°C and 30°C allows 100% continuous current without derating. Operation between 30°C
and 50°C requires output current derating.
NEMA Type 1 Enclosure
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.
External Heatsink Installation, Finless Drive
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

◆ 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.
396
Drive Rating
(%)
100
85
70
55
L8-35=1: Side-by-Side Mounting
0
30
-10
Figure A.7 Ambient Temperature and Installation Method Derating
L8-35=0: IP00 Enclosure
L8-35=2: NEMA Type 1 Enclosure
L8-35=3: External Heatsink lnstallation or
Finless Drive with C3 filter
L8-12
(Ambient temp: °C)
40 50
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
common_
TMonly