The SD833 Power Supply Units are designed to meet all the applicable electrical safety data stated by the EN 50178 harmonized European Standard Publication and the additional safety and function data required by EN 61131-2 and UL 508.

The secondary output circuitry is accepted for SELV or PELV applications. They are switch-mode Power Supply Units that convert the mains voltage to 24 volts d.c. These power supplies can be utilized for non-redundant and redundant applications.

Redundant applications require diode voting units SS823 or SS832. With the type SD833 series Power Supply Units, there is no requirement for the installation of a mains filter. They provide a soft start feature; power-on of an SD833 will not trip fuses or earth-fault circuit breakers.

SD833 Type:Power supply

Rated output current:10 A

Rated output power:240 W

Rated output voltage:DC24 V

Rated input power:447/514 VA

SD833 Efficiency:91/91.6 %

Mains voltage variation allowed:100-120 V a.c. +-10 %, 200-240 V a.c. +-10 %

Mains frequency:50-60 Hz +- 6%

Primary peak inrush current at power on:<10 A

Power Factor (at rated output power):0.59/0.51

SD833 Heat dissipation:24/22 W

Output voltage regulation at max. current:< 70 mV / <100 mV

SD833 Ripple (peak to peak):< 50 mV

Secondary voltage holdup time at mains blackout:46/47 ms

Maximum output current:12 A At ambient temp < 45 °C

Maximum ambient temperature:55 °C

Primary: Recommended external fuse:10-20 A

Secondary: Short circuit 14-18 A

Output over voltage protection:< 39 V

SD833 Dimensions

Width:60 mm (2.36")

Depth:117 mm (4.61")

Height:124 mm (4.88")

Weight (lbs.):700 g (1.5 lbs.)