GE DS200LPPAG1AAA简称LPPA线路保护板，属于GE Mark V Speedtronic燃机控制系统配套卡件，持续采集三相进线电压，监测缺相、过压、欠压与三相不平衡故障。

GE DS200LPPAG1AAA, LPPA line protection board, belongs to GE Mark V Speedtronic turbine control. It samples three-phase incoming voltage and monitors phase loss, overvoltage, undervoltage and phase unbalance.

故障判定后输出跳闸信号切断主接触器，保护EX2000励磁GTO功率堆。板载多组跳线可整定故障延时与动作阈值，需要和DCFB、LDCC、SDCC卡件配套使用，为停产老款励磁备件。

It trips the main contactor on fault detection to safeguard EX2000 GTO power stack. Onboard jumpers adjust delay and threshold. It must work with DCFB, LDCC and SDCC boards and is an obsolete excitation spare.

Main Specifications 技术参数

• 1. Product Series / 产品系列：GE Mark V Speedtronic EX2000 Excitation

• 2. Part Numbers / 型号编码：DS200LPPAG1AAA (LPPA)

• 3. Function Type / 类型：Three-phase line protection board 三相线路保护板

• 4. Key Features / 特性：Phase fault detection, contactor trip, jumper configurable delay

• 5. Compatibility / 配套：SDCC, LDCC, DCFB, EX2000 power stack

Core Functions 核心功能

• 1. 实时采集三相进线电压，持续监测供电侧各类异常工况。
  Real-time three-phase voltage sampling to monitor abnormal conditions on the incoming power side.

• 2. 缺相、欠压、过压、三相不平衡故障识别，按设定延时动作。
  Detect phase loss, under/over voltage and unbalance with configurable trip delay.

• 3. 输出跳闸指令断开主接触器，避免励磁功率堆承受异常冲击损坏。
  Send trip command to open main contactor and protect excitation power stack from damage.

• 4. 跳线JP1-JP7用于滤波、接地、延时参数配置，更换务必核对设置。
  Jumpers JP1-JP7 for filter, ground and delay setup; verify settings during replacement.

• 5. 向系统上报故障状态，配合主控卡完成故障记录与告警上传。
  Report fault status to control cards for event logging and alarm transmission.

Application Scenarios 应用场景

• 1. 火电厂Mark V机组EX2000励磁柜LPPA保护板故障替换。
  Replacement of failed LPPA boards on EX2000 excitation cabinets of thermal Mark V units.

• 2. 燃气轮机、蒸汽轮机励磁系统大修备件储备。
  Spare stocking for overhaul of gas turbine and steam turbine excitation systems.

• 3. 油气电站、自备电站Mark V老励磁系统卡件维保更换。
  Maintenance and spare replacement for legacy Mark V excitation systems in oil & gas and captive power plants.

• 4. 励磁功率回路改造项目，保护回路升级匹配原有硬件。
  Excitation power circuit retrofit, protection loop upgrade compatible with original hardware.

• 5. 海外燃机项目备件供货，配合保护定值整定与传动试验。
  Overseas turbine spare supply with protection setting and trip test commissioning.

FAQ 常见问答

Similar Models 相似型号

DS200LDCCH1AKA

DS200SDCCG1A

DS200DCFBG1BJB

DS200DCFBG1BNC

GE Mark V EX2000 excitation series