Product Overview
The 269PLUS-D/O-211-100P-HI is a microprocessor-based digital motor management relay from the GE Multilin 269 Plus family, engineered to deliver complete protection, continuous monitoring, and intelligent control for medium and large three-phase AC motors in demanding continuous industrial service. Manufactured by GE Multilin—now part of GE Vernova—the 269PLUS-D/O-211-100P-HI represents a decisive departure from conventional overload relays. Rather than responding only to current magnitude, it constructs a live thermal model of the motor from measured load current and cross-checks that model against real stator winding and bearing temperatures captured from platinum RTD sensors. This dual-verification philosophy allows the protected motor to operate closer to its true thermal limit without nuisance tripping, while still responding reliably to genuine overloads and incipient thermal damage.
The 269PLUS-D/O-211-100P-HI belongs to the established 269 Plus platform, one of the most widely deployed motor protection solutions in power generation, oil and gas, mining, cement, and heavy manufacturing. The “D/O” prefix denotes a drawout case construction, allowing the relay to be withdrawn from its cradle without disturbing field wiring—a feature that makes testing, calibration, and replacement possible during production without de-energizing the motor. The “HI” suffix identifies the high-integrity version, equipped with forced-guided relay contacts that satisfy SIL 3 safety integrity requirements and a wide-range control power supply of 90–300 V DC or 70–265 V AC. The “100P” designation specifies 100 Ω platinum RTD inputs, supporting up to twelve programmable channels for monitoring stator windings, bearings, and ambient temperature.
What truly distinguishes the 269PLUS-D/O-211-100P-HI is its MotorMatch learning capability. Instead of relying solely on nameplate data, the relay measures the actual inrush current, acceleration time, cooldown rate, and negative-sequence heating factor of the specific machine it protects. These learned parameters continuously refine the thermal model, enabling the 269PLUS-D/O-211-100P-HI to guard the full rotor damage envelope during starts while still permitting the starts the process genuinely requires. The result is a relay that does not merely protect the motor—it understands the motor, diagnoses the system around it, and communicates what it learns to the rest of the control architecture.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 269PLUS-D/O-211-100P-HI |
| Manufacturer | GE Multilin (GE Vernova) |
| Product Family | 269 Plus |
| Product Type | Digital Motor Management and Protection Relay |
| Case Style | Drawout (withdrawable without disturbing field wiring) |
| Control Power Supply | 90–300 V DC / 70–265 V AC, 50/60 Hz |
| Phase CT Input | 5 A secondary (configurable CT ratio up to 1500:5) |
| Ground CT Input | 5 A secondary |
| CT Primary Range | 100–1000 A |
| Frequency Range | 48–62 Hz (15–300 Hz for VFD applications) |
| RTD Inputs | 12 programmable, 100 Ω platinum (Pt100), 3-wire |
| Digital Inputs | 5 programmable (dry contact) |
| Output Relays | 4 total: Trip, Alarm, Auxiliary 1, Auxiliary 2 |
| HI Contact Type | Forced-guided contacts, SIL 3 compliant |
| Analog Output | 1 programmable (0–1 / 0–20 / 4–20 mA) |
| Communication Interface | RS-485, Modbus RTU protocol |
| Display | 48-character alphanumeric LCD, 5 LEDs |
| Operating Temperature | -25…+60 °C |
| Relative Humidity | Up to 95%, non-condensing |
| Dimensions (W × H × D) | Approx. 193 × 125 × 290 mm |
| Weight | Approx. 3.5–5.0 kg (configuration dependent) |
| Protection Class | IP20 (cabinet interior installation) |
| Safety Integrity | SIL 3 (HI version, forced-guided contacts) |
