Siemens 6SL3912-5EP38-0AA0 DD800 Midpoint Diode Power Card

Product Description

The Siemens 6SL3912-5EP38-0AA0 is a water-cooled midpoint diode power card (DD800) designed for SINAMICS GM150 and SM150 medium voltage drive systems, rated for 3.3kV to 4.16kV IGBT medium voltage converters. It serves as a core power component inside the high-voltage power cabinet, supporting stable midpoint clamping and power rectification. This legacy power card is widely stocked as spare parts for steel, mining, power generation and heavy industry drive cabinet maintenance and overhaul.

Product Functions

• Midpoint diode clamping and rectification for SINAMICS GM150 / SM150 medium voltage drives
• Water-cooled heat dissipation structure to sustain high current and high voltage operating conditions
• Suppress DC-link voltage fluctuation and protect IGBT power modules from voltage spikes
• Built-in temperature and power monitoring circuits for overheat and fault detection
• High vibration and corrosion resistance for heavy-duty industrial environments
• Modular plug-in design for convenient disassembly and replacement inside power cabinets

Application Scenarios

• SINAMICS GM150 / SM150 medium voltage variable frequency drive systems
• Steel rolling mill main drive and auxiliary medium-voltage motor control
• Mining conveyor, crusher and large pump medium voltage drive cabinets
• Power plant large fan, water pump and compressor variable speed control
• Spare replacement and repair of existing Siemens medium voltage drive racks

FAQ