Technical Parameters Basic Information Brand: ALSTOM / Converteam Part Number: MVAJ101RA1000A Form Factor: Standard 3U slide-in rack pluggable power module Matching peripheral boards: MVTU/MVTT traction master CPU, KCEG/KVFG IGBT gate drive PCBs, MCGV/MCGG analog sampling & safety interlock boards, MCAA/TRVC/P127 TCMS communication boards, MMLB01/MMLG01 digital I/O expansion boards Application: Heavy-duty European urban metro & light rail large-capacity traction converter, centralized isolated auxiliary power source for all rack low-voltage control electronics High-Voltage Input Specifications Input source: Vehicle main traction DC link Input voltage range: 400 VDC ~ 900 VDC wide fluctuation range Max rated input power: 380 W Input protection: Overvoltage lockout, undervoltage auto shutdown, reverse polarity blocking diode, multi-stage HV surge absorption circuit, built-in high-current input overcurrent fuse Galvanically Isolated Multi Output Channels DC24V / 6.5A Power supply for MMLB/MMLG digital I/O modules, control relays, temperature & current signal sensors, cabinet auxiliary heaters ±15V / 3.2A Dedicated power for all analog signal conditioning and high-precision sampling circuits ±5V / 4.2A Power for DSP traction master CPU, rack backplane communication logic and fault storage memory Dual independent isolated ±18V Separate isolated power rail exclusively for all IGBT gate drive monitoring PCBs All secondary outputs achieve complete galvanic isolation from high-voltage primary DC side Per-channel independent hardware protection: Short-circuit hardware latch-off, overcurrent current limiting, overtemperature auto shutdown, automatic self-recovery after fault clearance Mechanical Specifications Overall dimension: H130 mm × W98 mm × D220 mm PCB protection: Full acrylic conformal coating, anti-moisture, anti-corrosion, anti-dust, anti-mold Front panel LED indicators: HV Input Ready, 24V Aux Output Normal, Gate Drive Power Fault, Overheat Alarm, General Channel Fault Fastening structure: Anti-looseness lock buckle, maintains stable electrical contact under long-term vehicle running vibration and impact Railway Environmental & EU EN Compliance Operating ambient temperature: -25 ℃ ~ +70 ℃ Storage & transport temperature: -40 ℃ ~ +85 ℃ Relative humidity: 5% ~ 95% non-condensing Vibration standard: IEC 61373 railway rolling stock Shock resistance: 12g half-sine wave impact test EMC standard: EN 50121-3-2 railway vehicle electromagnetic compatibility Fire safety grade: EN 45545-2 HL2 low smoke, low toxicity flame retardant material