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).
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 type | Fixed | Dimensions | 260*280*450mm (W*D*H) | Weight | 20kg |
