Product Core Brief
- Part Number: DS200RT8AG3AHC
- Brand: GE (GE Energy / GE Digital / GE Industrial Systems)
- Series: GE Speedtronic Mark V / DS200
- Core Function: RT8 relay terminal board used as a field relay interface and I/O termination point in GE Mark V and EX2000 excitation system cabinets.
- Product Type: Mark V Relay Terminal Board
- Key Specs: Relay control signal transmission | I/O termination and distribution | relay status monitoring | interlock protection | 52 I/O terminals | positive and negative power connectors | legacy/obsolete product
- Condition: New Original / New Surplus
Product Introduction
GE DS200RT8AG3AHC is a relay terminal board for the GE Speedtronic Mark V control system family. It is used as a field relay interface and I/O termination point inside GE Mark V and EX2000 excitation system cabinets.
The board provides relay control signal transmission, I/O signal termination and distribution, relay status monitoring, and equipment interlock protection. It serves as a connection bridge between the control system and external relays, actuators, and field devices, helping to centralize relay management and improve wiring reliability inside drive, exciter, and turbine control cabinets.
The RT8 board supports system-adaptive power input and is documented with positive and negative power connectors for stable relay coil power distribution. Public listings describe it as an industrial-grade relay terminal board suitable for power generation, petrochemical, and other harsh industrial environments.
Some public sources also describe DS200RT8AG3AHC as an analog I/O board within the Mark V system, but the majority of product listings and technical descriptions identify it as a relay terminal board. The exact relay count, relay type, coil voltage, terminal map, connector layout, and LED indicators should be verified from the physical board label and GE Mark V documentation before installation.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE (GE Energy / GE Digital / GE Industrial Systems) |
| Part Number | |
| Product Type | Relay Terminal Board (RT8) |
| Series | GE Speedtronic Mark V / DS200 |
| Typical Application | Relay interface, I/O termination, interlock protection |
| Compatible Systems | GE Mark V control systems, GE EX2000 excitation systems |
| I/O Terminals | 52 I/O terminals (listed by third-party supplier) |
| Power Connectors | Positive and negative power connectors |
| Operating Temperature | -40°C to 70°C (listed by third-party supplier) |
| Status | Legacy / Obsolete |
Note: The relay terminal board function, Mark V/EX2000 compatibility, 52 I/O terminals, positive/negative power connectors, and -40°C to 70°C operating range are based on third-party product listings. The exact relay count, relay type, coil voltage, terminal pinout, and connector layout should be confirmed from the physical board label and GE Mark V manuals.
Quality Control Process (DYNAMIC GENERATION)
- Visual and label inspection. We check the part number, suffix, PCB surface, terminal blocks, connectors, LEDs, and mounting hardware for damage or corrosion.
- Terminal and connector check. The 52 I/O terminals and positive/negative power connectors are verified for correct pin continuity and no short circuits.
- Relay and component inspection. Relay sockets, driver circuitry, and protection components are inspected for visible damage or degradation.
- Configuration verification. Any jumpers, markings, or board-specific settings are recorded and compared against the original board or system documentation.
- Final packaging. After passing inspection, the board is anti-static bagged and foam-packed for shipment.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ Confirm the board function before installation. DS200RT8AG3AHC is described as a relay terminal board in most listings, but some sources also classify it as an analog I/O board; verify from the physical label.
❗ Label all I/O terminals before removal. The board may carry relay outputs, interlock signals, and field I/O; incorrect reconnection can cause trip or drive faults.
❗ Verify relay coil voltage. Coil voltage depends on cabinet configuration; do not assume a universal value without checking the site BOM or GE documentation.
❗ Record positive/negative power wiring. The board uses dedicated positive and negative power connectors; reverse or incorrect wiring can damage relay drivers.
❗ Check relay type and count. The exact number of relays, relay form, and contact rating should be confirmed from the physical board before replacement.
❗ Observe live-voltage safety. Relay terminal boards may be associated with energized control circuits; disconnect power before handling.
❗ Handle as ESD-sensitive equipment. Always use anti-static wrist straps and handling procedures during removal, installation, and storage.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| GE | GE | Direct | Same part number; verify relay count, terminal map, and power wiring. |
| GE | GE DS200RT8 variants | Needs Adaptation | Same RT8 family; suffix differences may affect configuration. |
| GE | GE DS200RTBA variants | Needs Adaptation | Related relay terminal board family; relay count and terminal layout may differ. |
| GE | Mark VIe / IS200/IS220 modules | Not Compatible | Different platform and architecture; not a direct replacement. |
Benchmark highlights
- GE Speedtronic Mark V RT8 relay terminal board.
- Used for relay control signal transmission, I/O termination, and interlock protection.
- Compatible with GE Mark V control systems and EX2000 excitation systems.
- Documented with 52 I/O terminals and positive/negative power connectors.
- Suitable for turbine, exciter, drive, and balance-of-plant relay applications.
- Legacy product; best suited for existing Mark V system maintenance and like-for-like replacement.
