Product Overview: The document provides technical specifications for the switch mode power supply model SNT9424-3, manufactured by FEAS. It includes detailed information on safety devices, general data, mechanical data, input and output data, safety data, operating data, control data, and status signals.

Safety Devices: The power supply includes a 2.0A delayed fuse for each phase at 400V AC, short circuit protection, and overload protection. It has a typical hold-up time of 20 ms.

General Data: The SNT9424-3 is a DC power supply with dimensions of 144mm x 100mm x 120mm and a weight of approximately 3.40kg. It is designed for mounting on rails according to DIN 46277.

Input Data: The device operates with an AC input voltage range of 320 - 550V (0-400Hz) and a DC input voltage range of 450 - 780V. The input current at nominal load is 0.75A per phase at 400V AC, with a peak current of less than 26A at 550V AC. It includes a transient voltage suppressor varistor for protective circuitry.

Safety Data: The power supply is tested for high voltage resistance and EMI suppression according to various standards (VDE, IEC, EN). It has an IP65 protection class enclosure and is suitable for use in tropical environments with 95% relative humidity.

Operating Data: The device operates at 100% duty cycle within a temperature range of -40°C to +80°C and can be stored between -40°C to +105°C. It supports parallel connection and has a derating feature from 50°C. The efficiency is approximately 91%, with an unlimited installation altitude and an MTBF of over 380,000 hours.

Control Data: The control deviation for load variation is less than 200mV for 10-90% variation and less than 10mV for ±10% variation. The control time is under 10ms for 10-90% load variation.

Output Data: The power supply provides an output voltage of 24VDC with a nominal output current of 12.0A. The output voltage is adjustable between 22.5VDC and 30.0VDC, with a power output of 288 Watts and a residual ripple of less than 25mVPP.

Status & Signal: The device includes LED indicators for operating status, operating failure, and phase failure. It also features a power boost function for increased output current under specific conditions.

Product Series: The document lists other products in the series, including SNT9412-3 and SNT9448-3, with varying output voltages and currents.