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ABB ACS355 - Page 360

ABB ACS355
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360 Technical data
Altitude derating, I
2N
In altitudes 1000…2000 m (3300…6600 ft) above sea level, the derating is 1% for
every 100 m (330 ft).
For 3-phase 200 V drives, the maximum altitude is 3000 m (9800 ft) above sea level.
In altitudes 2000…3000 m (6600…9800 ft), the derating is 2% for every 100 m
(330 ft).
Switching frequency derating, I
2N
The drive derates itself automatically when parameter 2607 SWITCH FREQ CTRL =
1(ON).
When parameter 2607 SWITCH FREQ CTRL = 2 (ON (LOAD)), the drive controls the
switching frequency towards the selected switching frequency 2606 SWITCHING
FREQ if the drive’s internal temperature allows.
Switching
frequency
Drive voltage rating
U
N
= 200…240 V U
N
= 380…480 V
4 kHz No derating No derating
8kHz I
2N
derated to 90%. I
2N
derated to 75% for R0 or to 80% for R1…R4.
12 kHz I
2N
derated to 80%. I
2N
derated to 50% for R0 or to 65% for R1…R4
and maximum ambient temperature derated to
30 °C (86 °F).
16 kHz I
2N
derated to 75%. I
2N
derated to 50% and maximum ambient
temperature derated to 30 °C (86 °F).

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