String box

String current monitoring and IP65 protection.

Field panel capable of monitoring string currents and promptly diagnosing any anomalies. The device is equipped with a 250 A, 1000 Vdc general disconnector; this disconnector, specific for photovoltaic applications, also allows the addition of the release coil for disconnecting the photovoltaic field from the inverter. The casing is made of UV-resistant polyester with an IP65 protection rating and allows the connection of up to 16 strings (with a maximum input current for each single string of 12 A) or 8 strings with a maximum string current of 20 A.

Monitoring and alarms for photovoltaic systems.

Compatibility with the Sirio Data Control supervision software ensures the display of currents and the sending of reports and alarms in the event of anomalies found based on the thresholds set in the configuration. The communication solutions are completed with two standard ports, one RS485 and one RS232, a slot for an optional Ethernet card, digital inputs and analog inputs for connecting environmental sensors (temperature, wind and radiation).

• Parallel connection of up to 16 strings of 12 A each (8 measurement channels) or 8 strings of 20 A each;
• local and remote indication of status/alarm conditions;
• RS232 and RS485 communication as standard
• slot for expanding communication options (for example with Ethernet card);
• proprietary communication protocol and MODBUS RTU integrated as standard available on all communication ports;
• wide configurability of monitoring through the available software;
• local alarm history.

• Protection fuses for each input with 1000 Vdc fuses on the positive and negative pole;
• connection of cables up to 16 mm2 for each input;
• output switch for disconnecting the inverter, which can be accessorized with a release coil;
• monitored surge arrester, equipped with overcurrent protection and easily resettable thanks to the removable cartridges;
• direct power supply from the photovoltaic field or optionally from auxiliary voltage;
• isolated digital inputs for local monitoring;
• isolated analog inputs for environmental sensors (2xPT100, 0-10 V, 4-20 mA);
• digital outputs with configurable voltage-free contacts;
• outdoor polyester box with IP65 protection rating.