Fittings

INT820 W Wind Protector

• Article No.

  13 N440

• Application

  Solar trackers track the sun with the surfaces of photovoltaic systems, which can improve the effectivity by up to 50 % compared to systems with fixed alignment. A distinction is made between single- and doubleaxis systems. There is a lesser critical wind load for the former so that generally the solar tracker is driven into the dead zone (in regards to the wind load) in case a defined wind speed is exceeded. The solar trakkers are equipped with batteries for the electrical supply of the control, whose minimum charge condition needs to be monitored. The INT820 W Wind Protector combines the measured values for wind speed, battery voltage, light and surface temperature and derives from that the corresponding position for the solar tracker.

• Functional description

  The INT820 W Wind Protector monitors the read-in wind speed (anemometer INT10, INT10 K) for two adjustable limits and activates a corresponding relay (R1, R2) if they are exceeded. The current battery voltage can also be read in and monitored. An alarm relay is triggered in case the voltage falls below an adjustable limit value. Further inputs exist for light and temperature, which influence the wind warning stage 1. If values fall below the set limits for temperature and light at the same time, a reduced wind value 1 is sufficient for activating the relay R1. The reason is the efficiency under diffuse light conditions - the solar tracker does not necessarily need to follow the sun. The INT820 W Wind Protector can be implemented anywhere where the wind speed is read in via an INT10 (INT10 K) with 4...20mA output and the wind speed should be monitored for limits. Thus, the INT820 W Wind Protector can also be employed where wind speeds should lead to preliminary warnings or shutdowns.