Yangfeng PV combiner box model

What is a PV AC combiner box?

The new PV AC Combiner boxes have been designed for PV systems with string inverters in trackers or fix tilt systems. The product portfolio is suitable for inverters from 60 kW up to 200 kW and support voltages of 400 V, 690 V or 800 V AC. The combiner boxes allow to collect from 2 up to 6 string inverters in one single cabinet.

What is a multi-string combiner box?

For large installations with multiple strings of solar panels, multi-string combiner boxes become critical. These boxes consolidate the outputs of multiple strings, simplifying wiring of the entire system.

Can I combine multiple solar array strings using a combiner box?

The following is a discussion on the requirements for combining multiple solar array strings using a combiner box. NEC Article 690.9 (A) states the following exception with regards to solar module overcurrent protection:

How are PV DC combiner boxes tested?

PV DC combiner boxes are tested according to IEC-61439-2 and are constructed on the basis of the test results as well as assembled for the specific application. This ensures that each of the requirements of the target application is fully met.

How many string inverters can a combiner box collect?

The combiner boxes allow to collect from 2 up to 6 string inverters in one single cabinet. They withstand ambient temperatures from −20 up to +50°C to operate in hardest climate conditions, fulfilling the highest market standards as per IEC 61439-2 ed 3.0:2020.

Can you install a PV system without a combiner box?

“We have seen problems on installations without combiner boxes, most often in emerging markets where installers/customers combine the PV source circuits in some other way, typically to bring costs down,” Hixson says.