Twerd PS300-WT Wind Inverter (5 kW, 3-phase)

The 3-phase, transformerless Twerd PS300-WT 5 kW inverter is designed for on-grid systems with wind turbines based on synchronous generators. The device operates fully autonomously, allowing the transfer of generated energy to the power grid and load control via MODBUS.

The Twerd PS300-WT inverter is a 3-phase grid-tied device with a nominal output power of 5 kW. The inverter works with small wind power plants equipped with permanent magnet synchronous generators. The design ensures a maximum efficiency of 97% and an IP65 protection rating, allowing for safe operation. Generator load control can be performed based on a 16-point characteristic curve or by direct current setting using MODBUS communication.

Key features

• Designed for micro-installations with on-grid wind turbines
• Protections against generator overspeed, islanding, and inverter overheating
• Built-in Ethernet and RS-485 communication interfaces supporting MODBUS and Json protocols
• Internal relays (30 A, AC1) controlling the operation of braking resistors
• Transformerless design ensuring low power consumption in standby mode (20 W)

Technical data

Nominal AC output power	5 kW
Number of phases	3
Maximum generator input current	13 A
Operating input voltage range (WT)	3 x 60..425 V AC
Rated output current	7.5 A
Grid output voltage	3 x 400 V, 50 Hz
Maximum efficiency	97%
Protection rating	IP65
Ambient temperature	-10 °C to +40 °C
Dimensions (W x H x D)	490 x 426 x 214 mm
Weight	33 kg