Precharge kit

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).

Applicazioni unità precarica

Technical data
Ambient condition
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 typeFixed
Dimensions 260*280*450mm (W*D*H)
Weight 20kg

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