GE DS200TCEAG2B DS200TCEAG2BHD Overspeed Board

This GE DS200TCEAG2B DS200TCEAG2BHD Emergency Overspeed Board monitors turbine speed from multiple magnetic pickups. The board triggers a shutdown when any speed exceeds the preset limit. You will find this critical safety component in Mark V turbine control systems. The DS200TCEAG2BHD variant includes a humidity-resistant conformal coating.

Technical Specifications

Parameter	Specification
Full Model	GE DS200TCEAG2B DS200TCEAG2BHD Emergency Overspeed Board
Category	Emergency Overspeed Board
Input Channels	3 Independent Magnetic Pickup Inputs
Input Range	50 mV to 50 V RMS
Frequency Range	10 Hz to 10 kHz
Overspeed Setpoint	Field-Programmable from 1000 to 15000 RPM
Response Time	Less than 20 milliseconds
Dimensions (H x W)	180 mm x 120 mm
Weight	Approximately 0.65 kg
Connectors	3 x BNC, 1 x 50-Pin Ribbon Header
Component Count	112 Discrete Components
Energy Storage	4 x 10 µF Signal Capacitors

Speed Monitoring and Trip Logic

The GE DS200TCEAG2B DS200TCEAG2BHD Emergency Overspeed Board processes each pickup signal independently. A voting circuit requires two of three channels to agree on overspeed. This design prevents false trips from a single faulty pickup. Furthermore, you can adjust the trip setpoint using onboard potentiometers. The board also provides a test mode for simulating overspeed conditions safely.

Installation and Connection Steps

Mount this GE DS200TCEAG2B DS200TCEAG2BHD Emergency Overspeed Board in any Mark V rack slot. First, connect each magnetic pickup to its corresponding BNC input. After that, wire the trip relay outputs to the emergency stop circuit. Then, set the overspeed threshold using the three adjustment potentiometers. Finally, perform a manual trip test before placing the turbine in service.

Energy Discharge and Safety Notice

This GE DS200TCEAG2B DS200TCEAG2BHD Emergency Overspeed Board stores very little energy after power removal. However, you must wait 30 seconds before disconnecting any pickup wiring. The signal capacitors discharge through internal protection diodes during this time. Never rely on this board as the sole overspeed protection device.

Status Indication and Diagnostics

Three green LEDs indicate valid signals from each pickup channel. A red LED illuminates when the board detects an actual overspeed condition. A yellow test LED flashes during the self-diagnostic routine. These indicators help technicians verify proper operation before turbine startup.