Description

The SM32 devices are AC/DC three-phase half-controlled suppliers designed to supply constant voltage to the DC link inverters. SM32 is suitable to power supply both single and multiple inverter systems parallel connected to a common DC link. The precharge of the leveling capacitors, which can be set via internal dip-switches, is performed by partializing the Mains voltage via an input thyristor bridge. A diagnostic circuit allows to set the delay time for the switching off of the power thyristor during a power dip. Inputs/Outputs - Relay outputs: 1 drive OK contact (normally open, closed after the precharge) - 2 digital outputs: MLP signal (sum of the precharge and of the set undervoltage threshold) and ML signal (Mains voltage monitoring). Protection functions Opening of the OK relay in case of: - overtemperature - power supply loss on the regulation card (±15V) - power supply loss - completely discharged DC link. Options: Input chokes - An input choke is compulsory for the functioning of the SM32 power supply
Standard AC/DC power supply, DC link current from 185 A up to 2000 A * Power supply from a three-phase mains 400V AC +10% -15% or 480 V +10% -15% * DC link current from 185 A up to 2000 A * Protection degree: IP20 (IP00 for 2000A) * The SM32 is suitable to supply power to both single and multiple inverter systems connected to a common DC link. * Marks: CE Features: - Selection of the delay time for the thyristor switching off during a power dip (7 times, from 1.1 to 7.7 ms ± 10%) which can be selected via the dip-switches. - Selection of the undervoltage threshold according to the power supply voltage (3 voltages: &le, 370 VDC, &le, 300 VDC and &le, 80 VDC) which can be selected via the dip-switches - Selection of the precharge time for the leveling capacitors (5 times, from 2 to 18 seconds ± 15%), which can be selected via the dip-switches - Selection of the power supply mains frequency: 50 or 60 Hz - Enabling, via the terminal strip, of the precharge delay.''