Technical Parameters Basic Information Brand: ALSTOM / Converteam Part Number: AT315MR-T/7 Form Factor: Standard 3U slide-in rack pluggable power drive module Matching peripheral boards: MVTU/MVTT traction master CPU, MVAJ/MVAX/MVUA high voltage auxiliary power supply, CDG11/MCGG analog sampling & safety interlock boards, MCAA/TRVC/P127 TCMS communication boards, MMLB/MMLG digital I/O expansion boards, PRS12 series backup low voltage power supply Application: Heavy-duty urban metro & light rail traction inverter, three-phase power IGBT drive, hardware fast fault protection and module status feedback Power Supply Specifications Logic control power: DC 24V vehicle control power, operating range 18VDC ~ 30VDC Isolated gate drive power: ±18V dedicated isolated power output from high voltage auxiliary power board Total max power consumption: 8.6 W Input protection: Reverse polarity blocking diode, multi-stage TVS surge filter, input overcurrent fuse, undervoltage lockout function Core Drive & Hardware Protection Functions Multi-channel isolated IGBT gate drive outputs 7 groups of galvanically isolated gate drive loops matched to traction power IGBT modules; built-in matched gate resistance to optimize switching speed and reduce switching loss; high drive current capability for large-capacity power modules. Microsecond-level hardware fault detection circuit IGBT desaturation hardware shutdown (response time < 2μs) Instant power loop overcurrent detection and interlock blocking Real-time monitoring of ±18V gate drive power supply loss Multi-channel NTC temperature signal input for power module thermal monitoring Independent hardware interlock blocking signal Once any dangerous IGBT fault is triggered, the board immediately locks all drive outputs and sends hardware blocking pulse to master CPU; protection action runs independently of software logic to avoid permanent burnout of expensive IGBT power modules. Fault latch & status upload All abnormal fault signals are hardware latched; fault codes, channel status and temperature alarm data are uploaded to traction master CPU through internal rack backplane bus for storage and vehicle fault display. Internal Rack Communication High-speed proprietary backplane bus for bidirectional real-time data interaction with master control CPU: receive synchronized PWM drive modulation instructions; upload drive enable status, IGBT fault flags and power module temperature data. 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: Logic Power OK, Gate Power Normal, Drive Enable, IGBT Channel Fault, Overheat Alarm, Rack Bus Disconnect Fastening structure: Anti-looseness lock buckle, stable electrical contact under long-term vehicle running vibration and impact Model optimization (T/7): Enhanced pulse transient absorption circuit, wider temperature operating margin for underground tunnel high-temperature environment Railway Environmental & EU EN Compliance Operating ambient temperature: -25 ℃ ~ +70 ℃ Storage & transport temperature: -40 ℃ ~ +85 ℃ Relative humidity: 5% ~ 95% non-condensing Vibration test 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