Growatt WIT 50-100K-US - Page 94

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Power
factor(@nominal
power)
>0.99
Adjustable power
factor
（1 leading～1 lagging）
THDi
<3%
<3%
<3%
<3%
AC grid
connection type
3P+PE
Stand alone (AC
power)
Rated AC output
power
50000W
63000W
75000W
100000W
Max. AC apparent
power
60000VA
75600VA
90000VA
120000VA
Rated output voltage
277V/480V
Nominal AC
frequency
50/60 Hz
Max. output current
72.2A
91A
108.3A
144.4A
Voltage accuracy
1%
Frequency accuracy
0.1Hz
THDv
3%
Unbalanced load
100% three-phase unbalanced
Overload capacity
≤110%，continuous;
110%～120%：10min
>120%，200ms
Switch time from
on-grid to off-grid
＜20ms
Switch time from
off-grid to on-grid
0ms
Efficiency
Max. efficiency
98.00%
98.00%
98.00%
98.00%
Max. battery
charge/discharge
efficiency
98.20%
98.20%
98.20%
98.20%
MPPT efficiency
99.90%
99.90%
99.90%
99.90%
Protection devices
Battery reverse
protection
Yes
Yes
Yes
Yes
DC surge protection
Yes（Class II）
Yes（Class II）
Yes（Class II）
Yes（Class II）
Insulation resistance
monitoring
Yes
Yes
Yes
Yes
RCD detection
Yes
Yes
Yes
Yes
AC short-circuit
Yes
Yes
Yes
Yes