ABB ACQ800 Series, Руководство по оборудованию

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112 ACQ800-37 Hardware Manual
Technical data
Symbols
Derating
The load capacity (current and power) decreases if the installation site altitude exceeds 1000 m
(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 · 10 °C =
90% or 0.90. The output current is then 0.90 × I
2N
or 0.90 × I
cont.max
.
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
Drive Size 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.
Nominal ratings
I
1N
Nominal input current
I
cont.max
Continuous RMS output current. No overloadability at 40 °C (104 °F).
I
max
Maximum output current. Allowable for 10 seconds at start, otherwise as long as allowed
by drive temperature.
Typical ratings for no-overload use
P
cont.max
Typical motor power. The power ratings apply to most IEC 34 motors at nominal voltage
(500 V).
Typical ratings for light-overload use (10% overloadability)
I
2N
Continuous rms current. 10% overload is allowed for 1 minute every 5 minutes.
P
N
Typical motor power. The power ratings apply to most IEC 34 motors at nominal voltage
(500 V).
Typical ratings for heavy-duty use (50% overloadability)
I
2hd
Continuous rms current. 50% overload is allowed for 1 minute every 5 minutes.
P
hd
Typical motor power. The power ratings apply to most IEC 34 motors at nominal voltage
(500 V).
%
°C