SM32 AC/DC power suppliers
Overview
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
Description
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: ≤ 370 VDC, ≤ 300 VDC and ≤ 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.
