ABB ACS880-87CC, Руководство по оборудованию

Страница: 108 / 144

108 Technical data

Definitions

Derating
The load capacity (current and power) decreases if the installation site altitude exceeds
1000 meters (3281 ft), or if the ambient temperature exceeds 45 °C (113 °F).
Temperature derating
In the temperature range +45 °C (+113 °F) … +55 °C (+131 °F), the rated output current is
decreased by 2.5 % 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 55 °C (+131 °F), the derating factor is
100% - 2.5 · 10 °C = 75% or 0.75. The output current is then 0.75 · I
gen
.
Altitude derating
At altitudes from 1000 … 2000 m (3281 … 6562 ft) above sea level, the derating is 0.5%
for every 100 m (328 ft). Derating is allowed only on maximum continuous current for grid
and generator. If the installation site is situated higher than 2000 m (6562 ft) above sea
level, contact ABB.
Alternatively the derating can be handled with cooling liquid temperature derating. 1 °C for
every 100 m. This means that in eg, 2000 m installation, the maximum liquid temperature
is 40 °C (instead of 50 °C) instead of 5% current derating.
Type equivalence table
Generator-side converter ratings
U
N
Nominal voltage (see also section Grid specification on page 111 )
P
gen
Typical generator power. The power ratings apply at nominal voltage 690 V.
I
2
Continuous rms current of the generator-side converter
Grid-side converter ratings
P
grid
Rated grid-side converter power. The power ratings apply at nominal voltage 690 V.
I
1
Continuous rms current of the grid-side converter
S
n
Apparent power
Cos phi Controllable cos phi with full rated power capacity. Range: -value…+value.
Converter type
ACS880-87LC- Construction type Basic module type (R9iLC)
Generator-side
converter
Grid-side
converter
Generator-side converter m
Grid-side converter LCL
ACS880-104LC-
… (+E205)
ACS880-104LC-
… (+E205)
U
N
= 690 V
4000A/4021A-7 5×R9iLC + 5×R9iLC + 1×LCL -0860A-7 -0800A-7
4000A/4132A-7 5×R9iLC + 6×R9iLC + 1×LCL -0860A-7 -0800A-7
3AXD10000011539
%
°C