SPU Precharge Kit and Devices
The precharge kit is available as a single or inserted unit inside the Capacitor Bank in the case of a solution with hold-up capacitors on the DC link.
They essentially consist of an insertion system by means of contactors, limiting resistors and a rectifying group suitably protected by High-Speed fuses, between the network and the capacitor bank of the DC link which can be constituted by the capacitors of the capacitor bank group or by the hold-up capacitors present in each market Inverter.
They are available with similar dimensions and weights for 400V and 690V three-phase networks and can be used for groups of capacitors up to 150,000F.
The following images show two typical applications for the precharge unit (respectively for the DC/AC Inverter and the AC/AC Inverter).
|Altitude||1000 m. a.s.l.||Climate||Temperate||Min./Max. operating temperature||0 ÷ 40°C||Storage di conservazione||-40 ÷ +55°C||Relative humidity||10 ÷ 90% (from 0 to 40°C)|
|Main general data|
|Main supply voltage||400V - 690V||Tolerance||± 10% power supply||Capacity||20mF ÷ 200mF||Rated frequency||50 and 60 Hz; ± 2%||Protection degree||IP20||Cooling system||Natural air||Installation type||Fixed||Dimensions||260*280*450mm (W*D*H)||Weight||20kg|