Technical Specifications Basic Identification Brand: Alstom / Converteam (GE Power Conversion) Part Number: 8199-4001 Product Type: 16-Way Unlatched Digital Relay Output Module Series: ALSPA Power Conversion Control System I/O Card Application: EMU/metro traction control cabinet, wind turbine converter, industrial MV drive automation, auxiliary equipment interlock control Power Supply Parameters Rated Control Supply: DC 24V Operating Voltage Range: 18 ~ 30 VDC Total Module Power Consumption: Max 18 W Isolation Grade: Reinforced insulation between backplane logic circuit and relay output contacts, 2kVAC dielectric withstand Surge Protection: TVS transient suppressor for power and signal bus Relay Channel Core Ratings Channel Quantity: 16 independent unlatched relay outputs Contact Type: Single-pole SPST normally open (NO) contacts Rated Switching Load: 2A, 240VAC resistive per channel Minimum Switching Capacity: 5mA / 5VDC (low signal load compatibility) Contact Material: AgSnO2 anti-welding alloy Relay Operation Mode: Non-latching (coil energized = contact closed; power off = reset automatically) Mechanical Service Life: ≥10,000,000 switching cycles Electrical Service Life: ≥100,000 cycles under full 2A/240VAC rated load Channel Status Indicator: Individual front LED for each relay channel ON/OFF diagnosis Communication & Backplane Interface Connection: Gold-plated rear edge connector for ALSPA rack internal bus Data Bus: Proprietary Alstom ALSPA parallel control bus Diagnosis Function: Onboard self-test circuit, fault signal uploaded to master CPU via backplane Mechanical & Installation Mounting: Standard 3U rack slide-in pluggable module Terminal Wiring: Front screw-clamp terminal block for all 16-channel external load wiring PCB Protection: Full acrylic conformal coating, anti-condensation, anti-dust, anti-corrosion Overall Dimensions: H 130 mm × W 108 mm × D 225 mm Net Weight: 0.82 kg Fixing: Front panel lock buckle to prevent loosening under vehicle vibration Environmental & Compliance Standards Operating Ambient Temperature: -25 ℃ ~ +70 ℃ Storage & Transport Temperature: -40 ℃ ~ +85 ℃ Relative Humidity: 5% ~ 95% non-condensing Vibration Resistance: IEC 61373 railway rolling stock vibration standard Shock Resistance: 12g half-sine impact test EMC Compliance: IEC 61000-6-2 industrial electromagnetic immunity