About String inverter to AC combiner box
The PV AC combiner box series are intended for use in photovoltaic (PV) systems designed with string inverters. The product combines various (2 to 6) string inverter out-puts into typically one output. The product contains over-current and overvoltage (optionally) protections at inverter level.
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About String inverter to AC combiner box video introduction
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6 FAQs about [String inverter to AC combiner box]
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.
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.
What is a combiner box?
The combiner boxes are in-stalled to connect, gather, collect and protect the AC cable outputs of various string inverters. 1 output, depending on various plant designs. Input of this product ranges from 400 V to a maximum input voltage of 800 V per string inverter.
What type of combiner box do I need for a photovoltaic system?
With surge protection (type 1/2) and cable glands for the input and output side. String combiner box for photovoltaic systems up to 1000 V DC for connecting 3 x 1 string. With surge protection (type 1/2) and cable glands for the input and output sides. String combiner box for photovoltaic systems up to 1,000 V DC for connecting 2x 1 string.
Do PV AC combiner boxes have a switch disconnector?
PV AC combiner boxes have an AC switch disconnector as an optional component. The AC voltage of the switch de-pends on the voltage of the associated PV string inverters. The switch disconnector (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.
How to install AC string inverters?
Make sure that the final input connections match the electrical drawing provided. ►Insert the AC string input cables (output cables of the string inverters) through the designated holes at the bot-tom of the enclosure into the combiner box. ►Make sure the wires pass through their designated cable gland with their thread in correct position.


