Siliken se2.8i, User Manual

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Operation
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user’s manual inverter SE2.8i - SE3.8i - SE4i - SE5i
to the grid for safety reason. Normally this is a failure that cannot be removed on field. It needs service personnel coming to remove the
problems and put the system back to operation.
3.2 Operation Feature
Anti-Island:
When an “island” condition is detected, the inverter will stop feeding the power to the grid and/or the load. The “island” is defined as a grid
tied inverter maintaining operation and feeding power to a load that has been isolated from the utility power source. This causes an automatic
shutdown of the inverter when there is an electrical disturbance on the utility grid. This is a safety feature which is primarily meant to prevent
electrical shock to staff who might be working on the grid wires.
Unity Power Factor :
The SE inverter intend to feed the power with a unity power factor (PF = 1) to the utility during operation. The inverter continues sensing the
phase of the utility voltage, and constructs the output current waveform in phase with the utility voltage.
Maximum Power Point Tracking :
In order to find the most efficient way of utilizing the solar energy, SE inverters are designed to track and absorb the maximum power from
the PV array. The Maximum Power Point Tracking (MPPT) function is employed in the embedded control software to achieve this intended
purpose.
3.3 LED Indication
There are three LED’s on the front panel of the SE inverter which displays the operating status of the inverter. As shown in the figure 3.3.1.
The detailed explanations of the status and the corresponding LED indicators are described in the following table.