ABB UNO-DM-3.3-TL-PLUS Product Manual page 144

The curve can be modified using
the Aurora Manager Lite configu-
ration software
The curve can be modified using
the Aurora Manager Lite configu-
ration software
8. Reactive Power
This section of the menu may be used to manage the supply of reactive
power into the grid. There are 5 possible types of management:
• Q: No Regulation: no regulation of reactive power. To activate this
mode, press ENTER and then press ENTER to confirm.
• Cos-phi fixed: Sets the power rating to a fixed value. To activate this
mode, press ENTER and set the Cos-Phi value to Over excited or Un-
der excited, from 1.000 to 0.8000; press ENTER to confirm.
• Q Fixed: Sets the reactive power to a fixed value. To enable this mode,
select Enable and then OK (using the UP / DOWN arrows). When
enabled, Set value will appear on the display, allowing you to set the
value of the reactive power (as either Over or Under excited, from
1.000 to 0.001)
• Cos-phi = f(P): Power rating as a function of the active power sup-
plied by the inverter. To enable this mode, select Enable and then OK
(using the UP / DOWN arrows). When it has been enabled, Load std
curve will appear on the display, allowing you to set the following con-
trol curve:
Cos-phi (Over excited)
0.85
0.9
0.95
1
0.95
0.9
0.85
Cos-phi (Under excited)
0.20 .3 0.4
• Q = f(U): reactive power as a function of the grid voltage measured by
the inverter. To enable this mode, select Enable and then OK (using the
UP / DOWN arrows). When it has been enabled, Load std curve will
appear on the display, allowing you to set the following control curve:
Q/Pn
0.36
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.36
220
210
- 144 -
0.50 0.6 .7 0.8
240
230
7 - Operation
P/Pn
0.9 1
Vout
250