Xantrex Technology 120 VAC/60 Inverter Capacity Vs Temperature, total, power, capacity, Operation

OPERATION

INVERTER CAPACITY VS TEMPERATURE

The current protection circuit in the SW Series Inverter/Charger is temperature compensated, therefore the maximum sized load that the inverter can run changes with temperature. As the temperature of the power devices (FET’s) increase, the allowable current is reduced. When the available current is reduced, the capacity of the inverter to run loads is reduced.

The graph below shows the effect temperature has on the inverter’s capacity to run loads, notice that the inverter reduces its capacity at temperature above 25 ° C. The temperature derating graph assumes that the inverter is at sea level and the airflow to the inverter is unrestricted.

		Temperature Derating for SW Series Inverters
	120
	100
Percent
of	80
total
rated	60
power
capacity	40
	20
	0
	25	32.5	40	47.5	55	62.5	70	77.5	85	92.5	100
					Temperature ° C

Figure 20, Inverter Capacity vs. Temperature

Page

60

 2001 Xantrex Technology, Inc.	Telephone: 360/435-8826	SW Series Inverter/Charger
5916 - 195th Street N. E.	Fax: 360/435-2229	Part No. 2031-5
Arlington, WA 98223	www.traceengineering.com	Rev. C: February 2001