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Operation and Application

Chapter5 Operation and Application

This chapter describes operations of the keys on the front panel of the AC power

supply. The AC power supply must be in the local mode when controlled by the

front panel. The default mode is the local mode after the AC power supply is

turned on. In the local mode, the user can enable all functions of the power

supply through the front panel.

5.1 full 4-Quadrant output character

The IT7900 series represent the newest generation of programmable, full four-

quadrant grid simulators with full 100% of current rating in both source and sink

mode, and provides energy recovery capability. The power generated by the

DUT during the test can be easily retuned to the AC grid, rather than being

dissipated as heat. which protects the environment and lowers the cost of

operation. It can be applied to the applications in testing grid-tied products that

inject energy into the grid, such as the frequency changes, voltage transients

and DC injection of grid-tied/off-grid inverters testing.

5.2 Select the Power Supply Mode

The IT7900 series provides multiple modes such as single-phase, three-phase,

reverse phase and multi-channel, which can be selected by the user through the

panel menu.

Under the reverse mode, the rated voltage will be extended to 200%.

The multi-channel function allows users to test 3 independent DUT at the same

time without adding additional hardware configuration.

The operation steps are as follows.

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

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

select the Phase and set the power supply phase mode.

Single Phase

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

the output mode can be set to AC/DC/ACDC/DCAC.

ITech IT7900 Series User Manual

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