DC UPS in Taipei MRT Train Carriages

C³V 2010 Programmable DC Power Supply

Description:

DD III was specially designed to 1,supply the train cabin security system with clean and continuous DC power and 2, facilitate the “today” VCR data transferring to main computer when the power was fluctuating or even blackout during the train was getting in the dock.

DD III Specifications:

• Input : 77Vdc ~ 132Vdc (from rail)
• OutputA1: 48Vdc for cameras
• OutputA2: 24Vdc for IPC
• OutputB1: 48Vdc for cameras
• OutputB2: 24Vdc for IPC
• Power : 400W max.
• Battery type: 48V20AH lead acid
• Charging current: 1A
• Comm port: RS-485

Features:

• A+B redundant power design.
• High efficiency conversion topology.
• Smart input power fail detection.
• Battery remained life diagnosis.
• RS485 communication w/ IPC.
• UPS auto-off after train parked on dock.

Application