Description
SEVEN Snow Sensor – Photovoltaic Energy Loss Monitoring
The SEVEN Snow Sensor is designed to measure energy production losses caused by snowfall on photovoltaic (PV) modules. It is suitable for both ground-mounted and rooftop PV installations. The sensor calculates the snow ratio, which directly represents energy loss: for example, a snow ratio of 10% indicates a 10% loss in energy production.
-
Functionality: Compares irradiance data from two reference cells (with and without snow) to determine snow coverage and energy loss.
-
Special Feature for Solar Trackers: Communicates snow accumulation to tracker control systems to optimize module positioning, saving energy by preventing unnecessary operation.
Technical Specifications:
-
Measured Data: Snow Ratio (0–100%)
-
Resolution: 0.1% | Uncertainty: ≤2%
-
Irradiance Range: 0–1600 W/m²
-
Data Output: RS485 up to 38400 Baud | Modbus RTU protocol | 1/s update rate
-
Operating Conditions: -40°C to +85°C, 0–100% RH
-
Power Supply: 22–30 V DC | Power Consumption: 0.82 A max (0.02 A heating off)
-
Electrical Connection: 3 m UV-resistant cable
-
Galvanic Isolation: 1000 V
-
IP Rating: IP65 | Dimensions: 200 × 412 × 44 mm | Weight: 1.845 kg
-
Calibration: Class AAA using reference cells per IEC 60904-2
The SEVEN Snow Sensor provides precise snow monitoring and energy loss calculation, making it ideal for optimizing PV system performance under snowy conditions.
