GE Electric | DS200RT8AG3AHC | Relay Output Terminal Board
Product Description:
The GE DS200RT8AG3AHC is a Relay Output Terminal Board for the Mark VI gas/steam turbine control system. It provides configurable relay outputs to interface between the controller and high-power field devices (e.g., actuators, pumps), enabling critical shutdown and safety functions in power generation applications.
Product Parameters / Specifications (DS200RT8AG3AHC):
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Feature
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Specification / Description
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Manufacturer
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GE Power Conversion (formerly GE Industrial Systems)
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Series
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Mark VI Speedtronic™ Turbine Control System
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Part Number
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DS200RT8AG3AHC
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Board Type
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Relay Output Terminal Board
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Channels
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8 relay channels (Form C contacts)
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Contact Rating
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5A @ 30VDC / 250VAC (resistive)
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Max. Switching Power
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62.5W DC / 1250VA AC
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Contact Material
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Silver Alloy (AgCdO)
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Isolation Voltage
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1500V AC (channel-to-channel)
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Response Time
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≤10 ms (operate/release)
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Connection Type
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Screw terminal blocks (14-22 AWG)
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Status Indication
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LED per channel (relay state)
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Mounting
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DIN rail or panel mount
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Operating Temp.
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-40°C to +85°C
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Compliance
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UL 508, CE, RoHS
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Key Features:
- Form C Contacts – SPDT (Single-Pole Double-Throw) with NO/NC options for failsafe design.
- High Surge Handling | Withstands 100A inrush (10 ms) for motor/starter control.
- Galvanic Isolation | 1.5kV between coils/contacts and logic circuits.
- Hot-Replacement | Supports live swap in Mark VI racks without shutdown.
- Diagnostic LEDs | Real-time channel status monitoring.
- Redundancy Support | Compatible with dual-processor Mark VI configurations.
Primary Function & Purpose:
Acts as a high-power interface between Mark VI controllers and field devices to:
- Execute turbine emergency shutdowns (ESD) and permissives.
- Control auxiliary systems (lube oil pumps, cooling fans).
- Trigger alarms/annunciators based on protection logic.
Typical Applications:
- Turbine Protection – Trip solenoid valves on overspeed/vibration events.
- Fuel Systems – Shut off gas/fluid supply valves during faults.
- Generator Control – Enable/disable excitation systems.
- Cooling Circuits – Start/stop auxiliary coolant pumps.
- Fire Suppression – Activate deluge systems during emergencies.
Application Fields:
Critical for power generation safety systems in:
- Gas Turbine Plants: GE Frame 5/6/7/9 series control cabinets.
- Steam Turbines: Boiler feed pump trips, condenser vacuum protection.
- Hydroelectric Plants: Gate actuator control, brake systems.
- Compressor Stations: Pipeline emergency shutdown (ESD) systems.
- Industrial Co-Gen: Backup generator synchronization control.
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