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Product Info
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120 Watt DC-DC Converters
The Powertron SRE series by Martek Power is a very low profile dc-dc converter designed specifically for use on railway rolling stock. Rated at 120W, units are available in single or dual output configurations with input ranges to cover all those typically found in rail applications. The unit is suitable for either rack or bulkhead mounting. The range is fully compliant with the current national and international railway standards and norms.
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Features
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Fixed output can be specified in the range 5V to 48V
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Very low profile 3U euro cassette
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Very high efficiency
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Fully enclosed
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Input Characteristics
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Min
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Max
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Typical
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Units/Comments
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Input Voltage Range
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77
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137.5
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110 Vdc, Nominal
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50
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90
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72 Vdc, Nominal
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36
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65
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52 Vdc, Nominal
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25
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45
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36 Vdc, Nominal
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16
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30
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24 Vdc, Nominal
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Hold Up Time:
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Consult factory for optional module to EN50155 Class S2
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Input Ripple:
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To EN50155
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Efficiency Range:
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90% typical
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Output Characteristics
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Min
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Max
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Typical
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Units/Comments
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Output Power(Max.):
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120
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Watts
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Number of Outputs:
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1
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Model
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Main Output Voltage (VDC)
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Aux 1 Nom. Vout (VDC)
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Aux 2 Nom. Vout (VDC)
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Main Output Current (Amps)
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Aux 1 Output Current (Amps)
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Aux 2 Output Current (Amps)
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SRE 0500-*/1
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5
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16
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SRE 1200-*/1
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12
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10
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SRE 1500-*/1
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15
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8
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SRE 2400-*/1
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24
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5
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SRE 3600-*/1
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36
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3.6
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SRE 4800-*/1
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48
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2.5
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Current limit:
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Operates at approx. 115% of nom. or peak load.
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Load Regulation:
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+/- 0.5% (1U only)
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Line Regulation:
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+/- 0.2%
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Isolation Characteristics
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Input to Output:
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2.0 kVac
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Output to Base:
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1.0 kVac
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Input to Base:
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1.0 kVac
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Environmental Characteristics
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Operating Temperature:
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-40 to +71°C
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Deration:
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No derating over operating temp. range
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Storage Temperature:
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-40 to +80°C
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Cooling:
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Convection / Conduction
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Humidity:
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95% max.
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Mechanical Characteristics
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Dimensions:
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166.7x20.32x111 mm
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Weight:
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<500 grams
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Connectors:
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DIN 41612 H15 Class 1
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Applicable Standards
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EMC
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EN50155, EN50121-3-2
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Other
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EN50155
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