The grid and system protection of Tele Haase continuously checks the grid quality. If the voltage or frequency in the public grid rises or falls beyond permissible limits, the small power station is immediately decoupled. In this way, unintentional islanded operation is prevented, thereby preventing a dangerous situation for maintenance personnel.
The grid and system protection NA003 satisfies various national standards. All relevant parameters for the Tele grid and system protection can be flexibly set directly in the field via Open Setup. The grid and system protection ensures safe isolation between smartflower and the public grid in the event of a fault. The corresponding parameters for this separation process are standardized differently in different countries. Therefore, the grid and system protection device can be adapted to individual requirements.
To prevent misuse, password protection or sealing the device is possible at the official delivery point. Operation in single as well as three-phase grids is possible through simple switching. The new grid and system protection in smartflower is suitable for medium and low voltages. It has a wide-ranging power supply with an adjustable nominal voltage of 24 V DC, 110 to 240 Volt AC with up to 60 Hertz nominal frequency. Both the measuring as well as the supply circuits are designed for nominal voltages of up to 312 Volt AC. The device has a fail-safe design. (HN/NHP)
