500W Switch Mode Power Supplies
Technical Specifications
 Type  Redundant SMPS modules (2 units) in a single rack.
 Model No.  CBSMPS.
 Input Voltage  230V AC ±10% 50Hz ± 3%.
 Output Voltage  Adjustable voltage : From 24V DC to 27V DC.
 Continuous output at full load.
 Current  20 Amps 480 Watts max.
 Output Ripple  Less than 250mV r.m.s.
 Line Regulation  Better than 1V for complete input voltage range.
 Load Regulation  Better than 1V for load variation from 10-100%.
 Output Voltage Drift  Less than 0.2% of set voltage after warm-up.
 Display  Single 3 digit digital meter for output voltage and current with a switch for selection.
 Protection Circuits  Input over current protection thru’ MCB.
 Overload/ short circuit protection.
 Output over voltage.
 SMPS over temperature protection.
 LED Indications   AC Input Power on.
 Output present.
 Output over voltage.
 Output overload/ short circuit.
 Termination  All termination on front panel.
 Dimensions  3U size (module) size.
 Less than 400 mm.
 Mounting  Two nos. plug in type modules in one 19” rack.
 19” (W) x 400 mm (D) x 177 mm (H).
 Cooling  Forced air cooling with one fan for each SMPS.
 Output Voltage Adjustment  Through front panel with adjustability range from 24V to 27V DC.
 Failure Contact  1 N/O contact with 30V DC, 3A rating for each SMPS.
 Input Isolation  Thru’ MCB for each SMPS.