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Operation and Application

Three Phase

Under the three phase mode, the power supply works as a three phase power

supply. the output mode can be set to AC/ACDC.

Reverse Phase

Under the reverse phase, the power supply works as a single phase power

supply, and the rated voltage will be extended to 200%. For example, AC power

supply rated voltage is 350V, under the reverse phase mode, the reted output

voltage is 700V. And the output mode can be set to AC/DC/ACDC/DCAC.

Multi-channel

Under the Multi-channel phase, the power supply works as a single phase power

supply and have three channels.

The multi-channel function of the IT7900 series allows users to test 3

independent DUTs at the same time without adding additional hardware

configuration. In the traditional solution, the user needs to configure 3 AC power

supplies; and one IT7900 device can meet multi-channel testing requirements.

For example, IT7915-350-90 rated power is 15kVA, can provide single-

phase/three-phase 15kVA DUT test, can also meet up to three single-phase

DUTs test independently. The output mode can be set to AC/DC/ACDC/DCAC.

5.3 Select the Output Mode

The IT7900 series has four output modes: AC, DC, AC+DC, DC+AC. It not only

provides pure AC/DC output, but also can use AC+DC and DC+AC output

modes to realize "AC output plus DC bias" And "DC output waveform with ripple",

which cover a wider range of applications.

The output mode can be select in the system menu.

1. Press [Shift] + (System) enter to system menu.

2. Under the Source setting interface, touch the screen or rotate the knob to

select the [Output couple mode] and set the output mode.

5.3.1 AC Output Mode

If the output mode select to AC Mode, the instrument will simulate AC power

supply. The default set of IT7900 series power supply is AC Mode.

Set the output parameters of the power supply in the main interface, including

the output voltage, output frequency.

z Press up/down keys to select setting value and then press Enter to confirm.

z Rotate the knob to select setting value and then press Enter to confirm.

z Touch screen and then press Enter to confirm.

ITech IT7900 Series User Manual

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