Xantrex Technology XFR 2800 manual Positive-negative Supply

Local Operation

Using Multiple Supplies

Two Positive Voltages To obtain two positive voltages, connect the negative output terminals of both supplies together in a common connection. The positive output terminals will provide the required voltages with respect to the common connection. See Figure 3.4.

Figure 3.4 Split Supply Operation of Multiple Supplies

(Two Positive Voltages)

(Local sense lines shown are default J10 connections.)

Positive-negative Supply

CAUTION

To prevent possible damage to the supply, do not connect the remote program return line of the negative supply to the common connection.

To obtain a positive-negative supply, connect the negative output terminal of one supply to the positive output terminal of the second supply. The positive output terminal of the first supply then provides a positive voltage relative to the common connection while the negative output terminal of the second supply provides a negative voltage. You can set the current limits independently. The maximum current available in split supply operation is equal to the rated output of the supplies. For example, 70 A for two 40 V, 70 A models. See Figure 3.5.

68 Operating Manual for XFR 2.8kW Series Power Supply