Q3 ENERGIE GmbH & Co. KG products
Fireman Switch for PV Systems – Module String Disconnection
QFire - Generator Circuit Breakers
At INTERSOLAR EUROPE 2021 we had numerous discussions about our QFire. We have collected their most frequently asked questions and our answers for you here.
Connection Technology for PV Power Plants
Q3 Simple - String Box
The Stringbox Simple has 2 to 6 inputs, pluggable from the outside via H4 or MC 4 connections. It is completely wired internally with a printed circuit board which can be fitted with fuses. The two outputs are also realised via H4 connectors. The wire cross-section can be between 2.5 and up to 10/25 mm².
Q3 Easy - String Box
The Stringbox Easy has 4 to 18 inputs, pluggable from the outside via H4 connections. It is completely wired internally with a printed circuit board which can be fitted with diodes and/or PV fuses. The two outputs are also realised via H4 connectors. The wire cross section can be between 2.5 and 6 mm². Furthermore, the Stringbox Easy can be equipped with a second output or a cable cross-section of up to 35 mm² can be connected via screw terminals mounted on top-hat rails.
Easy - Duo/Trio Channel String Box
The Easy Duo/Trio Channel string box is a clever variant which, when it can be used, significantly reduces the cost of the box and installation! There is a wide range of possible applications for this variant. The trick is that we galvanically separate the circuit boards internally, thus enabling two or three different MPP trackers or inverters to be started up, and all this with just one box.
Q3 - String Box
The BIG string box is a generator connection box for large systems. There are 5 standard versions with 8, 12, 16, 20 and 24 inputs. All the usual modules for large systems such as DC isolators, surge protection, PV fuses and current sensors can be integrated here. The Stringbox BIG is usually planned and constructed according to customer specifications. No wishes remain unfulfilled here.
