GE DS200RTBAG3AEB Relay Trunk Terminal Board (RTBA, G3 group)

Description

Hardware & Electrical Specifications

‑ Model: DS200RTBAG3AEB ‑ Part Number: DS200RTBAG3AEB ‑ Module Type: Mark‑V RTBA G3 Relay Trunk Terminal PCB Board ‑ Mounting: Screw‑fixed rack‑mount inside control cabinet ‑ Coil Power: 24 VDC from Mark‑V rack backplane ‑ Relay Configuration:  • Total 10 relays  • 7 × DPDT Form‑C contacts  • 3 × 4PDT Form‑C multi‑pole contacts ‑ Contact Rating: Resistive load：2A@30VDC / 0.6A@125VAC; coil‑to‑contact isolation 1500V RMSDCSCPU ‑ Field Terminals: 52‑position screw‑type terminal block for field wiring ‑ Surge Protection: MOV metal‑oxide varistor for each relay channel ‑ Configuration components: Multiple Berg‑jumpers for signal‑path assignment; strictly duplicate original jumper positions during replacement ‑ Connectors: Dual stab‑type backplane connectors; multi‑pin ribbon‑cable connector; 52‑position field terminal block ‑ Diagnostics resources: Per‑channel relay‑status LED indicator lamps ‑ PCB treatment: Industrial conformal‑coated multilayer circuit board (‑AEB revision) ‑ Compatibility note: Exclusively for GE Speedtronic Mark‑V gas‑steam turbine, EX2000 excitation and DIRECTO‑MATIC2000 DC‑drive platforms; not drop‑in compatible with Mark‑VI / Mark‑VIe. After replacement, copy original jumper‑settings, verify stab‑connector full‑engagement, test each relay pull‑in action & LED status, measure dry‑contact continuity before applying field‑side load voltage.

Environmental Specifications

‑ Operating temperature: 0 ℃ ~ +60 ℃ ‑ Storage temperature: −40 ℃ ~ +85 ℃ ‑ Relative humidity: 5%‑95% non‑condensing ‑ Installation location: Indoor turbine‑control / drive cabinet, Pollution Degree 2, IP20 ‑ EMC compliance: Industrial EMC requirements for power‑generation turbine‑control‑room equipment ‑ Certifications: CE, UL compliant for power‑plant control‑system components

Mechanical Data

‑ Board dimension: approx 288 mm × 72 mm ‑ Mounting: Four‑point screw‑fixed cabinet rack‑mount ‑ Weight: approx 0.38 kg

Main Functions

1. Provides 10‑channel isolated Form‑C dry‑contact relay outputs for Mark‑V system: implements turbine trip‑logic, permissive interlock, alarm relay output, excitation‑drive auxiliary interlock‑signal switching.
2. 52‑position screw‑terminal block serves as field‑wiring termination point; dual stab‑backplane connectors receive drive‑commands from Mark‑V main CPU boards.
3. MOV surge‑suppression components absorb field‑side voltage‑spikes, reduce contact‑arcing and extend relay service‑life. Hardware jumpers complete signal‑path assignment matching project‑specific I/O‑logic requirements.
4. Per‑channel status‑LED lamps support daily monitoring, commissioning and field‑fault‑isolation troubleshooting.

Installation & Wiring Requirements

1. Cut off rack 24VDC control power before installation or replacement. Non‑hot‑swappable. ESD wrist‑strap protection is mandatory during board handling.
2. Secure DS200RTBAG3AEB onto cabinet rack. Reproduce jumper‑configuration exactly consistent with original‑board hardware settings. Guarantee dual stab‑backplane connectors fully seated; tighten all field‑terminal‑block wiring.
3. All field‑wiring must strictly follow Mark‑V system‑wiring drawings. Reliable protective‑earth connection for control cabinet is mandatory.
4. After replacement: Restore rack control‑power. Verify each relay‑channel pull‑in action and corresponding status‑LED indication. Measure dry‑contact‑continuity for every output channel. Complete static‑logic‑verification test before putting turbine‑unit into service.
5. Replacement note: Incorrect jumper‑configuration, poor stab‑connector contact or loose field‑terminals will cause relay‑mis‑operation, loss of trip / permissive‑logic function, which may lead to unit‑trip‑events. Full‑system relay‑logic function verification test is mandatory before turbine‑unit commissioning.