ABB PRO-33.0-TL Series, Service Manual

Page: 15 / 122

Program features 15
DC voltages and maximum power point tracking
The following picture visualizes the operational voltage ranges of the PRO-33.0.-TL
inverter. The input operation voltage range depends on the AC voltage and it is between
580 and 950 volts when the AC voltage is nominal 400 V
AC
.
•
MPPT range @ P
AC, rated
= maximum power available with tracking, no derating
•
MPPT range = maximum power tracking range, power may be derated.
•
Start range = Input voltage range where inverter may start
Start range
The inverter starting range is between 610 V and 1000 V. The minimum startup voltage
depends linearly on AC voltage. 610 V is valid at nominal AC voltage 400 V
AC
. If the
voltage at start is greater than 950 V, it is regulated down to 950 V where tracking is
started.
5 Available power is less than the inverter’s power limit
P
act
< P
lim
6 Inverter disabled (parameter 189.01 Inverter operation )
OR fault
OR grid unstable
OR VDC low
OR VDC > VDC
max
OR FRT overshoot
7 No monitoring mode (parameter 189.07 Night mode )
AND VDC < VDC
sleep
AND Control unit screensaver active
AND No events active
8 Inverter disabled (parameter 189.01 Inverter operation )
OR fault
OR grid unstable
OR VDC < VDC
start
Warning ”DC
overvoltage”
Grid
connection is
not allowed.
Fault ”DC
overvoltage”
Inverter may be
damaged.
P
max
U
Derating
range
Forbidden area
Non-operating
range
Start range
Vmax = 1100 V
550 V
580 V
610 V
Vmppt,max
850 V
Vdc,ref,max
950 V
Vmax,operating
1000 V
Par 178.4 MPPT Voltage max
VDC start@ VAC= 400 V
Vmppt min@ VAC > 400 V
Vmppt min@ VAC = 400 V
Vmppt min@ VAC < 400 V
MPPT range
MPPT range @ P
AC, rated
Par 178.3 MPPT Voltage Min