The powerful DC Disconnect PVREM- -AF1 on a hybrid basis allows disconnection of the DC side of a photovoltaic system in proximity of the modules (or directly below the cable outlet) by means of the integral remote control module. Disconnection of the DC lines within the building ensures a high degree of safety for individualsÐin Ðhazardous situations such as fire or flood and also during Ðmaintenance works.
The additionally integrated arc fault detection feature, tested to the standard UL 1699B, detects hazardous DC arc faults in the PV system and trips the DC Disconnect immediately by means of the remote control. Disconnection of the circuit helps to extinguish serial arc faults already before any safety-critical situations can arise. DC arc faults can be caused by defective components such as connectors, cables, PV modules and junction boxes due to ageing, animal bite, heavy snowfall or mounting and installation errors. The integral arc fault detector now allows realisation of fire prevention in photovoltaic systems. Remote disconnection and reconnection provide ease of reset and thus high system availability even in large roof-mounted solar installations.
The E-T-A technology of arc fault detection significantly enhances the safety of photovoltaic systems.
