GE IS400JPDHH1ACE

GE IS400JPDHH1ACE（JPDH）是Mark VIe涡轮控制系统专用高密度直流配电板，接收28VDC主电源输入，分流输出给多组I/O Pack以及IONet以太网交换机，每一路输出搭载独立PTC自恢复限流保险，单路短路不会造成整柜电源瘫痪。

GE IS400JPDHH1ACE (JPDH) is a high-density DC power distribution board for Mark VIe turbine control system. It takes 28VDC main power and distributes power to multiple I/O packs and IONet switches. Every output channel has independent PTC resettable fuse, so short circuit on one branch will not crash the whole cabinet power supply.

IS400JPDHH1ACE (1).png

板卡支持菊花链级联，多块JPDH互联拓展供电负载数量，自带电源状态监测回路，可向控制器上报支路失电、过流告警，全板三防涂层，适配电站控制柜多粉尘、温差波动工况。属于停产存量备件，广泛用于燃机、汽机控制柜电源分配回路维保改造，是整套Mark VIe系统供电架构的核心分支单元。

This board supports daisy-chain connection to expand the total load capacity. It integrates power status monitoring and can send branch loss or overcurrent alarms to the controller. Full conformal coating improves reliability under dusty and wide temperature cabinet environments. It is a discontinued legacy spare widely used for cabinet power loop maintenance, the key branching unit of Mark VIe power architecture.

IS400JPDHH1ACE (2).png

Main Specifications 技术参数

1. Product Series / 产品系列：GE Speedtronic Mark VI / Mark VIe Turbine Control System
2. Part Numbers / 型号编码：IS400JPDHH1ACE (JPDH High Density DC Power Distribution Board)
3. Function Type / 类型：DC Power Distribution Board 高密度直流电源分配板
4. Key Features / 特性：28VDC input, independent PTC protection, daisy-chain expandable, power fault monitoring, conformal coating
5. Mounting / 安装：标准Mark VIe机架安装，配套系统28VDC供电母线

Core Functions 核心功能

1. 28VDC主电源多路分支分配，为I/O模块、IONet交换机提供受控供电。
Distribute 28VDC main power into multiple branches for I/O packs and IONet network switches.
2. 每路输出独立PTC自恢复过流保护，隔离故障支路，防止故障扩散。
Independent PTC resettable protection for each branch to isolate faults and avoid cascading failure.
3. 支持菊花链级联，多板互联扩容，满足大型控制柜大量I/O组件供电需求。
Daisy-chain interconnection to expand load capacity for large cabinets with numerous I/O packs.
4. 实时采集各支路电源状态，过流、失电信号上传ToolboxST监控软件。
Monitor branch power status and upload overcurrent / power-loss alarms to ToolboxST.
5. 无源配电架构，低功耗设计，降低控制柜内部发热，提升系统稳定性。
Passive distribution design with low heat generation to improve overall cabinet reliability.

Application Scenarios 应用场景

1. 联合循环电站燃机、汽机Mark VIe控制柜I/O组件供电回路备件更换维保。
Spare replacement and maintenance for I/O power supply loops of gas and steam turbine Mark VIe cabinets.
2. 整套IONet冗余交换机集群供电分配，保障涡轮控制通讯网络稳定供电。
Power distribution for redundant IONet switch clusters to stabilize turbine control communication.
3. 存量GE涡轮控制系统升级改造，老化JPDH配电板替换更新。
Retrofit of legacy GE turbine control systems and replacement of aging JPDH boards.
4. 海外电站EPC项目成套备件供货，搭配各类I/O模块、处理器板打包交付。
Complete spare parts supply for overseas power EPC projects, matched with I/O and processor packs.
5. 控制柜电源回路定期校验、故障排查，备用板快速恢复分支供电链路。
Used for periodic power loop inspection and troubleshooting, quickly restore branch power as spare.

FAQ 常见问答

Q: Can IS400JPDHH1ACE convert voltage? / IS400JPDHH1ACE具备电压转换功能吗？

A: No, it is only a passive distribution board, it cannot step up or step down voltage. Input and output remain 28VDC.
不具备电压转换功能，属于无源分配板，输入输出均为28VDC，只做分路与保护。

Q: Is it compatible with IS200JPDHG1AAA? / 是否可以直接替换IS200JPDHG1AAA？

A: Pin definition and branch quantity differ. Wiring and load limits must be rechecked before replacement.
引脚定义与输出支路数量存在差异，更换前必须重新核对接线与负载上限。