GE IS200WROBH1ABA Relay Power Sensing Board

GE IS200WROBH1ABA is a relay power sensing option board designed for the GE Mark VIe Speedtronic turbine control system. It provides fused power distribution and relay output drive for safety interlock circuits of gas and steam turbine units.

This conformal coated PCB board integrates multiple fuses and independent electromechanical relays. It supports real-time power circuit diagnosis and works cooperatively with PDIO I/O packs, widely used as critical spare parts for power plant turbine control system maintenance.

Main Specifications

• Brand: GE
• Model: IS200WROBH1ABA
• Product Type: Mark VIe Relay Power Sensing Board (SRLY Option Board-B)
• Equipped with multi-channel fuses for overload circuit protection
• Built-in independent Form-C electromechanical relay channels
• Relay contact rating: 5A @250VAC / 30VDC
• Conformal coating protects circuit against humidity and dust corrosion
• Plug-in structure compatible with standard Mark VIe control racks
• Onboard circuit monitoring for power and wiring fault detection
• Operating Temperature Range: -30°C ~ +65°C

Core Functions

• Receive control commands from PDIO modules and drive field safety relays and actuators
• Provide fused power supply to relay output channels to prevent short-circuit damage
• Collect power circuit status signals and feed diagnostic data back to main controller
• Execute safety contact switching for turbine emergency shutdown and protection logic
• Isolate field power circuits to avoid interference damaging main control hardware
• Support system online fault diagnosis for blown fuses and relay circuit anomalies
• Conformal coated circuit board adapts to harsh power plant cabinet environment
• Modular plug-in design facilitates disassembly and spare parts replacement during overhaul
• Coordinate signal interaction with IS220PDIOH1B and other Mark VIe I/O modules
• Guarantee reliable long-term operation of turbine safety interlock control loops

Application Scenarios

• Thermal power plant GE Mark VIe gas turbine control racks
• Steam turbine safety protection and auxiliary interlock control systems
• Combined cycle power generation unit automation control cabinets
• Oil & gas industry compressor and turbine monitoring equipment
• Biomass power station main turbine safety control units
• Waste-to-energy power plant unit protection automation racks
• Industrial power plant auxiliary machinery interlock control systems
• LNG power generation turbine safety monitoring cabinets
• Overhaul, retrofit and spare parts replacement of Mark VIe control systems
• GE turbine control relay board spare parts inventory and field service projects