SMA Solar Technology America LLC
Limits of accuracy of time measurement at nomi-
nal trip time
Limits of accuracy of current measurement
Limits of accuracy of power (active/reactive)
measurement
Limits of accuracy of power factor measurement
Limits of accuracy of time measurement
Output power at +60°C (+140°F) at 500 V
Output power at +60°C (+140°F) at 800 V
Power factor at rated power
Range of the displacement power factor (ad-
justable)
Feed-in phases
Phase connection
Overvoltage category in accordance with
UL 1741
* Depending on the configured country data set
Efficiency
Maximum efficiency, η
CEC efficiency, η
CEC
Multifunction relay
Maximum DC switching voltage
Maximum AC switching current
Maximum DC switching current
Minimum load
Minimum electrical endurance when the maxi-
mum switching voltage and maximum switching
current are complied with*
* Corresponds to 20 years at 12 switching operations per day
Protective Devices
DC reverse polarity protection
Input-side disconnection point
Output-side service switch, listed in accordance
with UL 508
Installation Manual
MPP
MPP
max
± 0.1%
1% of the AC current
5% of the nominal AC power
0.01
0.001 s
> 34 kVA
> 38.5 kVA
1
0.0 overexcited to 0.0 underexcited
3
3 (+1)
IV
98.2%
98.0%
30 V
1.0 A
1.0 A
0.1 W
100000 switching cycles
Short-circuit diode
DC load-break switch
AC load-break switch
STP50-US-40-IA-en_es-11
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