Symbols; Derating; Temperature Derating; Altitude Derating - ABB ACS800-07-0610-3 Hardware Manual

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Symbols

Nominal ratings
I
cont.max
I
max
Typical ratings for no-overload use
P
cont.max
Typical ratings for light-overload use (10% overloadability)
I
2N
P
N
Typical ratings for heavy-duty use (50% overloadability)
I
2hd
P
hd

Derating

The load capacity (current and power) decreases if the installation site altitude exceeds 1000 metres
(3281 ft), or if the ambient temperature exceeds 40 °C (104 °F).

Temperature derating

In the temperature range +40 °C (+104 °F) to +50 °C (+122 °F), the rated output current is decreased
by 1% for every additional 1 °C (1.8 °F). The output current is calculated by multiplying the current
given in the rating table by the derating factor.
Example If the ambient temperature is 50 °C (+122 °F), the derating factor is 100 % - 1
90% or 0.90. The output current is then 0.90 × I

Altitude derating

At altitudes from 1000 to 4000 m (3281 to 13123 ft) above sea level, the derating is 1% for every 100 m
(328 ft). For a more accurate derating, use the DriveSize PC tool. If the installation site is higher than
2000 m (6600 ft) above sea level, please contact your local ABB distributor or office for further
information.
Technical data
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Continuous RMS output current. No overloadability at 40 °C.
Maximum output current. Allowable for 10 seconds at start, otherwise as long as allowed
by drive temperature.
Typical motor power. The power ratings apply to most IEC 34 motors at nominal voltage
(400, 500 or 690 V).
Continuous rms current. 10% overload is allowed for 1 minute every 5 minutes.
Typical motor power. The power ratings apply to most IEC 34 motors at nominal voltage
(400, 500 or 690 V).
Continuous rms current. 50% overload is allowed for 1 minute every 5 minutes.
Typical motor power. The power ratings apply to most IEC 34 motors at nominal voltage
(400, 500 or 690 V).
or 0.90 × I .
2N cont.max
%
· 10 °C =
°C