SMA 20000TL - Manual (Page 44)

STP 20000TL-30 STP 25000TL-30
Total harmonic distortion of the output
current with total harmonic distortion
of the AC voltage < 2%, and AC
power > 50% of the rated power ≤3% ≤3%
Rated power frequency 50 Hz 50 Hz
AC power frequency* 50 Hz / 60 Hz 50 Hz / 60 Hz
Operating range at AC power fre-
quency 50 Hz 44 Hz to 55 Hz 44 Hz to 55 Hz
Operating range at AC power fre-
quency 60 Hz 54 Hz to 65 Hz 54 Hz to 65 Hz
Power factor at rated power 1 1
Displacement power factor, adjustable 0
overexcited
to 0
underexcited
0
overexcited
to 0
underexcited
Feed-in phases 3 3
Connection phases 3 3
Overvoltage category in accordance
with IEC 62109-1 III III
* depending on the configured country data set
Efficiency
STP 20000TL-30 STP 25000TL-30
Maximum efficiency, η
max
98.4% 98.3%
European weighted efficiency, η
EU
98.0% 98.1%
Protective Devices
DC reverse polarity protection Short-circuit diode
Input-side disconnection point DC load-break switch
DC overvoltage protection Surge arrester type II (optional)
AC short-circuit current capability Current control
Grid monitoring SMA Grid Guard 3
Maximum permissible fuse protection 50 A
Ground fault monitoring Insulation monitoring: R
iso
> 250 kΩ
All-pole sensitive residual-current monitoring unit Available
10 Technical Data SMA Solar Technology AG
Operating Manual STP20-25TL-BE-en-12 44