Low Voltage DC to DC Power Converter for Railway Applications PST-3

PST-3

  • Nominal 36 VDC input (standard LRV power bus)
  • 13.6 VDC output
  • Wide input range
  • Wide temperature range
  • High isolation
  • Rugged construction

DC INPUT:
20-47 VDC with 36 VDC nominal.

EFFICIENCY:
70% minimum or greater.

OUTPUT VOLTAGE LINE REGULATION:
The unit maintains the output voltage within ± 5% for normal operating input voltage range.

OUTPUT VOLTAGE LOAD REGULATION:
The unit maintains the output voltage within ± 2% for load currents between 0A and 15A.

OUTPUT VOLTAGE:
13.6 VDC. 24 VDC available.

OUTPUT LOAD CURRENT:
Up to 11A of continuous load current, and up to 15A of load current at a 25% duty cycle with an “on” time of 30 seconds maximum.

INPUT RIPPLE:
2.0 VRMS

OUTPUT VOLTAGE RIPPLE:
Operating: -30°C to +70°C.
Non-Operating: 40°C to +80°C.
Relative Humidity: 5-90%, non-condensing.

OPERATING TEMPERATURE RANGE:
Operating: -30°C to +70°C.
Non-Operating: 40°C to +80°C.
Relative Humidity: 5-90%, non-condensing.

OUTPUT CURRENT LIMITING:
The unit provides protection against overloads and short circuits. No damage results from any overload condition. The unit automatically returns to full rated
operation within three seconds upon removal of the overload condition.

ISOLATION:
The isolation between chassis ground and each or both if the input and between +13.6 VDC or its return line to chassis ground is capable of passing a hi-pot test where 1075 V AC, 60 Hz is applied for one minute. The isolation between input and outputs and between the input and chassis is capable of passing a 2000 Volts stress test.

INSULATION RESISTANCE:
20 Megaohms minimum, between input and chassis, input and output, and output and chassis when measured at 500 VDC.

INPUT LOADING:
181 Watts max while delivering maximum output currents.

SHORT CIRCUIT PROTECTION:
The unit provides protection against overloads and short-circuits. No damage results from any overload condition. The unit automatically returns to full rated operation within three seconds upon
removal of the overload condition.

OVER VOLTAGE PROTECTION:
The unit is protected electronically from an overvoltage condition. Input power to the unit may need to be removed and re-applied to resume unit operation.

VOLTAGE POLARITY:
Accidental reversal of the input voltage polarity does not damage the unit when the unit is protected by a 20-Ampere fuse or circuit breaker at the power source.

WEIGHT:
7.0 lbs max.