Howard Photovoltaic Inverter User Manual

What is a PV inverter?

Knowledge of the local regulations and directives. The inverter is a transformerless three-phase PV grid-connected inverter, is an integral component in the PV power system. The inverter is designed to convert the direct current power generated from the PV modules into grid-compatible AC current and feeds the AC current to the utility grid.

How to connect a PV string to an inverter?

During the PV string input connection, the DC current of each string should be gathered together by a combiner box (or other combining devices) and then connected to the inverter. C(+194°F). The current rating of the cable should be selected in accordance with the maximum short circuit current of the PV arrays connected to the inverter.

What are the statuses of a PV inverter?

Normally there will be three statuses during the operation (refer to the LED indications): Waiting: Conditions: The initial DC voltage of the PV strings is greater than the Min. DC input voltage, but is lower than the DC start-up input voltage. Inverter cannot start-up normally and cannot feed power into utility grid either.

How do I install a solar inverter?

The inverter must be installed according to the correct technical specifications. To startup the inverter, the Grid Main Switch (AC) must be switched on, before the solar panel’s DC solar switched on. To stop the inverter, the Grid Supply Main Switch (AC) must be switched off before the solar panel’s DC isolator switched off.

What should I do if my solar charge inverter is hot?

The housing of the all-in-one solar charge inverter is hot when it is working. Do not touch it. Do not open the terminal protective cover when the all-in-one solar charge inverter is working. It is recommended to attach proper fuse or circuit breaker to the outside of the all-in-one solar charge inverter.

How does the isolarcloud inverter work?

The inverter provides standard RS485 ports for communication. Users can also check running data and set related parameters via the iSolarCloud APP. The inverter converts the DC current into grid-compatible AC current and feeds the AC current into the grid. The inverter provides various parameter settings.