Temperature Derating Curve; Power Derating Curve Out Of Mppt Zone - YASKAWA PVI 23 TL Installation And Operation Manual

PVI 23TL, 28TL Installation and Operation Manual (Rev J)

13.4 Temperature Derating Curve

Figure 13.1 shows the standard power derating curve for a PVI 23-28TL inverter. The inverter
operates at full power up to 45°C and derates linearly until 60°C where it shuts down to protect
itself.

13.5 Power Derating Curve Out of MPPT Zone

Figure 13.2 below shows the standard derating curve outside of the MPPT zone. Inverters derate
linearly outside their rated MPPT range.
Po/Pn
100%
80%
60%
40%
20%
DOCR-070365-J
Po/Pn
100%
80%
60%
40%
20%
Figure 13.1 – Temperature Derating Curve
300
Figure 13.2 – Power Derating Outside of MPPT Range
55%
113℉ 140℉
(45℃) (60℃)
500 800
(480)
Tamb
900 1000
PV Voltage (V)
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