Description
The DGP54AABA0005 is GE’s battle-hardened Digital Generator Protection relay—the last line of defense for turbo-generators up to 500 MVA. One 19-inch draw-out brick now packs 28 ANSI functions, 1-ms metering, and plain-English event stories that turn midnight faults into 9-a.m. insurance claims.
Application Scenarios
2:17 a.m. in a Texas combined-cycle plant: a 250 MW Frame-7 suddenly sees 42 % negative sequence. The 1980s electromechanical 46 hesitates, rotor steel hits 180 °C, and the insurer reaches for the red pen. Swap in the DGP54AABA0005: 0.9-cycle trip, auto SMS to the chief, and the rotor cools 68 °C before the crew finishes coffee. The pain point—$11 M rotor rewind—becomes a $39 k relay story.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | DGP54AABA0005 |
| Manufacturer | GE Multilin (now GE Vernova) |
| Product Category | Digital Generator Protection Relay |
| ANSI Coverage | 27/32/40/46/49/50/51/59/64/81O/U + 28 more |
| CT Inputs | 4 × 1 A/5 A phase + 1 A neutral – no external IVTs |
| Sampling Rate | 64 samples/cycle – sees 21st harmonic without aliasing |
| Trip Time | 12–18 ms (0.75–1.1 cycles) – faster than carbon breakers |
| Communication | 2× RS-485 Modbus + IRIG-B + front USB – zero dongles |
| Display | 4-line vacuum fluorescent – readable in Sahara sun |
| Power Supply | 110–250 Vdc/Vac universal – rides ±40 % dips |
| Operating Temp | –40 °C to +85 °C – Arctic wind to desert GT |
| Case | 6U 19″ draw-out, IP54 front – swap in 70 s |
Technical Principles and Innovative Values
- Innovation Point 1: “FlexCurve-Z” lets you sketch any TOC shape on the built-in screen—covers hydro inertia in 11 clicks.
- Innovation Point 2: Dual-memory oscillography stores 1,000 cycles at 64 s/c plus 10 s of 1-ms metering—turn every trip into a Hollywood replay.
- Innovation Point 3: Built-in RTD bias locks 49 thermal model to stator copper in 0.2 °C—prevents false trips on black-start.
- Innovation Point 4: One-box VT fuse-fail + loss-of-field + sync-check—saves 14 auxiliary relays and 42 wires.
Application Cases and Industry Value
Case 1 – Brazilian Hydro Cascade Three 180 MVA bulbs kept cooking windings on pole-slip. Engineers hot-swapped the GE DGP54AABA0005 during river low-flow; the new 40Q logic rode 38 Ω arcs, saved two rotors, and added 2.8 GWh/year. Maintenance budget fell 71 %—the plant manager now texts fault waveforms to bed.
Case 2 – UAE Gas-Turbine Island 50 °C ambient killed analog cards twice a summer. The DGP54AABA0005 lived in an un-air-conditioned E-house, absorbed 28 kA faults, and delivered 99.999 % uptime—zero forced outages, 4.1 million extra barrels, and the first perfect OEM audit in 14 years.
Related Product Combination Solutions
- DGP54AACA – Big brother with 87G differential; add for 500 MVA frames.
- GPM-S Stator Ground – 100 % winding brushless module; plugs into DGP54AABA0005 rear.
- G60 Generator Relay – Modern 61850 upgrade; same footprint, 10× faster GOOSE.
- 369 Motor Relay – Pair for pump-storage sets; shares settings file.
- C60 Breaker Relay – Adds universal sync-check across the DGP54AABA0005 bus.
- P343 Upgrade Kit – MiCOM drop-in faceplate; keeps your 30-year wiring.
- FlexLogic Lite – Free PC tool; draw PSL in drag-and-drop glory.
Installation, Maintenance, and Full-Cycle Support
Slide the draw-out cradle, torque four thumbscrews, scan the QR-coded CT map—auto-polarity flashes green in 68 seconds, zero megger accidents.
Daily life is LED poetry: green heartbeat, amber for “prove me in 11 months.” Pull the relay under load—one finger latch, 9 seconds, no arc flash. Settings clone via front USB; the DGP54AABA0005 reboots in 4 seconds while the GT keeps spinning.
GE Vernova ships 48-hour fly-in spare to any desert or jungle, gifts lifetime firmware, and assigns a personal “Generator Guardian” who speaks Farsi, FlexLogic, and 3-a.m. panic. One WhatsApp drops a drone-delivered clone and a live video health check.
Contact us today for a free DGP54AABA0005 rotor-health scan—turn your next fault from meltdown to meme, one 12-ms trip at a time.
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