question

joeccv avatar image
joeccv asked

Multiplus Temperature Derating - When and how?

The Multiplus 3kva spec sheet states 2400w at 25deg C and 2200w at 40deg C. Does the derating start at 40? or is it a linear progression starting at 26 and up?


I have sensitive equipment that will need 2700va of power at its max (but much lower continuous) and need to correctly plan if the Multiplus 3kVa is suitable.

MultiPlus Quattro Inverter Charger
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2 Answers
Alexandra avatar image
Alexandra answered ·

@JoeCCV

Temperature derating and efficiency is explained here in a white paper. And here.

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jonathan-drewes avatar image
jonathan-drewes answered ·

The deratings are specified for an ambient air temp., which the units do not measure, I assume. So, how valid are these deratings? The units measure the temp at some internal location (heatsink etc) and apply a measured correlation to ambient?

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