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If there is a failure or if maintenance work needs to be carried out, the inverter must be disconnected from the PV generator. A DC disconnect is used for this purpose. According to IEC standard 60364-7-712 (in line with VDE 0100 T712), an “accessible load switching device between the PV generator and inverter” is required by law. Voltwerk VSC 25/900 (C) DC disconnects meet and exceed the requirements of this standard and therefore ensure a high level of safety.
They have also been developed in line with market requirements: the high voltage of up to 900 VDC and the total permissible current of 25 A permit universal use of these DC disconnects. They are lightweight and allow for quick and easy installation and the high IP 65 protection type makes it possible to install the unit outside. Naturally, the Voltwerk VSC 25/900 (C) DC disconnect is compatible with all inverters of the Voltwerk VS series.
| VSC 25/900 | VSC 25/900 C | |
|---|---|---|
| Max. input voltage | 900 VDC | 900 VDC |
| Max. total current | 25 A | 25 A |
| Possible number strings | 5 | 5 |
| Switch version | 2-pole disconnector | 2-pole disconnector |
| Input and output terminals | 6 mm² | 6 mm² |
| Protection type | IP 65 | IP 65 |
| Protection class | II | II |
| Lightning protection | – | Typ 2 according to EN 61643-11 |
| Permissible ambient temperatures | –20 to +50 °C (< 1h up to max. 70 °C) | |
| Dimensions (W x H x D) | 400 x 200 x 130 mm | 400 x 200 x 130 mm |
| Depth with switching lever | 160 mm | 160 mm |
| Weight | approx. 2.3 kg | approx. 2.3 kg |