CPS SCA Series - Grid Voltage Derating Graph

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10.3.3 Grid Voltage Derating Graph
1) When volt-watt function disable, the grid voltage is within 100%~110%
(Un ~ 1.1*Un) of the Rated Output Voltage, the inverter output power (Pn)
may reach 100%. When the grid voltage is lower than the Rated Output
Voltage, the inverter will limit the AC Output Current and the output power
(Pn) will begin to derate. shown in Figure 10-3-1.
20%
40%
60%
80%
100%
Po/Pn
0.88*Un Un 1.06*Un 1.1*Un
Grid Voltage (Vac)
volt-watt function disable
Figure 10-3-1 SCA25/50/60KTL-DO/US Derating Curve of Grid Voltage
2) When volt-watt function enable, the grid voltage is within 100%~106%
(Un ~ 1.06*Un) of the Rated Output Voltage, the inverter output power (Pn)
may reach 100%. When the grid voltage is lower than the Rated Output
Voltage or more than 106%Un, the inverter will limit the AC Output Current
and the output power (Pn) will begin to derate, shown in Figure 10-3-2.