GE IS400JPDGH1ACE JPDH High Density Power Distribution Board

Product Description: The IS400JPDGH1ACE is a GE Mark VIe / Mark VIeS high-density 28VDC power distribution board (JPDH). It receives 28 VDC primary power and distributes regulated, individually fused power supply to Mark VIe I/O packs and IONet Ethernet switches inside the turbine control rack. Each output channel is protected by PTC resettable fuses, providing overload and short-circuit isolation, preventing single channel failure from crashing the whole control network. This board supports daisy-chain expansion for large rack configurations with high I/O quantity, widely used for gas turbine, steam turbine and EX2100e excitation control cabinets.

Features:

• Designed for GE Mark VIe and Mark VIeS turbine control system, EX2100e excitation rack compatible
• Input: 28 VDC, multi-channel isolated power output for I/O packs and network switches
• Individual PTC fuse protection for every output channel, fault isolation function
• Support daisy-chain connection, expandable for larger I/O rack power requirements
• Onboard LED indicators for power status and channel fault diagnosis
• Eurocard board form factor, plug-in backplane installation inside Mark VIe rack
• Wide operating temperature, designed for continuous operation in power plant EMC harsh environment
• ACE suffix defines hardware revision and BOM variant

Applications:

• Thermal power gas turbine & steam turbine Mark VIe control cabinet
• EX2100e generator excitation control rack power distribution
• Oil & gas compressor turbine safety control system
• Island power generation unit turbine governor cabinet spare replacement
• Legacy Mark VIe system retrofit, maintenance and spare upgrade project

FAQ:

Q: What does JPDH stand for?
A: JPDH = High Density Power Distribution board, dedicated power supply distribution card for Mark VIe I/O packs.

Q: What is the difference between IS400JPDGH1ACE and other JPDH revisions?
A: The suffix ACE indicates hardware revision. Different revisions have component BOM differences; must match ControlST firmware version before replacement, not always plug-and-play directly.

Q: Can it work with old Mark VI (non-VIe) racks?
A: No, Mark VI uses different power distribution architecture, incompatible with Mark VIe JPDH boards.

Q: Is IS400JPDGH1ACE still in production?
A: Mark VIe series is legacy turbine control hardware. Available supply is NOS surplus or fully tested refurbished spare boards.