Photovoltaic combiner box data collection

What is a combiner box in a photovoltaic system?

In a photovoltaic system, a combiner box acts as a central hub that consolidates and manages the direct current (DC) output of multiple solar panels. Its main purpose is to simplify the wiring structure, enhance system security and simplify maintenance procedures.

What is the enclosure of the PV DC combiner box made of?

The enclosure of the PV DC COMBINER BOX is made of Glass Fibre Reinforced Polyester (GFRP). The en- closure provides IP65 and IK07 or higher in accordance with IEC 62208. Each enclosure is equipped with hinged door(s). The PV DC COMBINER BOX has a DC disconnection switch by default.

How does the PV DC combiner box with monitoring work?

By default, the PV DC COMBINER BOX with monitoring comes with the internal communications pre-wired. This means that there is a communication cable between the device and 3 terminals at the bottom side of the enclosure.

How to connect a PV DC combiner box?

Pull down the cables to assure that all of them are well connected. The output connections depend on the design of each tailor-made PV DC COMBINER BOX. The output cables must be connected to the poles of the switch disconnector or to the terminals prepared for this purpose.

How do I connect a DC combiner box to a solar inverter?

The output cables must be connected to a Level 2 combiner box, which will join DC+ and DC- from other Level 1 combiner boxes, or directly to the solar inverter. The enclosure of the PV DC COMBINER BOX is made of Glass Fibre Reinforced Polyester (GFRP). The en- closure provides IP65 and IK07 or higher in accordance with IEC 62208.

Does a PV combiner box have a DC disconnection switch?

The PV DC COMBINER BOX has a DC disconnection switch by default. The DC voltage of the switch depends on the voltage of the PV string. The switch disconnector mak- ing and breaking capacity (according to the IEC 60947-3) has been selected to assure that it can switch the circuit at full load at the maximum operating temperature.