
“All components are rated for 300Arms. EC-LCL1200B-350 [is] a heavy-duty LCL electric filter specifically designed for off-highway applications,” according to the company. “Applications include drilling equipment, material handling equipment and tethered excavators.”
It is suited to both 50 and 60Hz operation, protected by IP6K9K and IP67 sealing, and can be used across -40 to +85°C and up to 4,000m altitude.
Liquid cooling is required at a minimum of 20 litre/min and maximum of +65°C. Three internal PT100 sensors are provided for monitoring, and maximum allowable internal temperature is 125°C.
Internal contactors are provided to switch through-power on and off, and to operate pre-charge resistors.
This is a smart filter, needing a separate 8 to 32Vdc ~32W supply to power the internal circuitry.
Its signals are compatible with the company’s EC-C1200-450-L three-phase ac-dc power converter, which it is designed to partner.
“The combination of components [filter and converter] is bidirectional, meaning that it can take power from the grid and feed power back to the grid,” said Danfoss.
The filter measures 590 x 874 x 178mm and 127kg, and its vibration and shock characteristics are designed for vehicle use.
Two of them can be paralleled to increase output power.