Technical Specifications Basic Identification Brand: Alstom Full Part Number: TRVC070753000 Product Type: Railway Isolated DC-DC Traction Voltage Converter Application: EMU/metro traction cabinet, vehicle auxiliary control power supply, signal board dedicated power module Input Electrical Parameters Rated Input DC Voltage: DC 110V (standard railway vehicle auxiliary bus) Input Operating Range: 77 VDC ~ 137.5 VDC Input Surge Suppression: Built-in TVS and LC filter for traction grid transient surge Input Reverse Polarity Protection: Integrated anti-reverse diode circuit Output Electrical Parameters Multiple Isolated Stabilized Output Channels Channel 1: DC 24V / 3A continuous Channel 2: DC 15V / 1.5A positive Channel 3: DC -15V / 1.5A negative Total Max Output Power: 120W Output Voltage Precision: ±1% full load regulation Ripple Noise: ≤120mV peak-to-peak Isolation Grade: Reinforced isolation between input and all outputs, 3kVAC dielectric withstand Integrated Protection Functions Overvoltage protection (OVP): Auto shut-down + latch fault Undervoltage lockout (UVLO) on input side Overcurrent protection (OCP) per output channel Short-circuit auto recovery protection Over-temperature thermal shutdown with auto reset after cooling Mechanical & Installation Mounting Method: Standard 35mm DIN rail snap-on installation Housing Material: Aluminum alloy sealed casing for heat dissipation & shielding Terminals: Screw-clamp terminal blocks, applicable wire 1.0 ~ 4 mm² Tightening torque: 1.0 ~ 1.2 N·m Overall Dimension: H 130 mm × W 65 mm × D 110 mm Net Weight: 0.85 kg PCB Protection: Full acrylic conformal coating anti-humidity, anti-corrosion Environmental & Railway Grade Performance Operating Ambient Temperature: -25 ℃ ~ +70 ℃ Storage & Transport Temperature: -40 ℃ ~ +85 ℃ Relative Humidity: 5% ~ 95% non-condensing Vibration Standard: IEC 61373 railway rolling stock vibration test (10–150Hz)