GE 269PLUS-D/O-111-100P-HI Motor Protection Relay

Description

The GE Multilin 269PLUS-D/O-111-100P-HI is a high-performance motor protection relay engineered for demanding industrial environments. It delivers accurate thermal modeling, dependable electrical protection, and real-time diagnostics that help operators maintain motor health. Moreover, the relay adapts to each connected motor through its learning algorithms, which refine protection thresholds during normal operation. This capability creates a stable protection layer that supports efficient plant workflows. In addition, the HI power-supply variant accepts a wide auxiliary voltage range, which simplifies integration in facilities with mixed control architectures.

Functional Highlights

The relay provides fast and consistent protection against overload, imbalance, locked-rotor conditions, and ground faults. Furthermore, detailed metering and event capture assist maintenance teams during troubleshooting tasks. Its RS-485 Modbus interface supports straightforward SCADA or DCS integration, and the optional Ethernet expansion enhances system connectivity. Operators benefit from the front-panel display, which presents clear status messages and thermal capacity values. Therefore, the relay strengthens both operational reliability and long-term asset management.

Technical Specifications

Protection Functions

• Thermal overload with motor-learning capability
• Phase imbalance, phase loss, and negative-sequence detection
• Ground fault and overcurrent protection
• Undercurrent monitoring for load-loss detection
• Locked-rotor and jam protection

Control Power Supply

• 90–300 V DC
• 80–265 V AC

Inputs and Outputs

• Digital inputs for control and interlocking
• Four relay outputs for trip, alarm, and auxiliary signaling

Metering & Diagnostics

• Real-time thermal capacity calculation
• Motor load, current imbalance, and acceleration monitoring
• Event and fault recording for maintenance analysis

Communication Interfaces

• RS-485 with Modbus RTU
• Optional Ethernet interface module

Environmental & Mechanical

• Operating temperature: –20 °C to +70 °C
• Mounting: Panel-mount, drawout style
• Display: LED and LCD indicators
• Weight: 2.3 kg

Typical Applications

This relay supports medium-voltage and low-voltage motors used in power generation, steel production, chemical plants, and water treatment facilities. For instance, maintenance engineers often deploy it in pump, fan, and compressor systems that demand reliable motor protection. Moreover, its diagnostic capability helps operations teams identify developing issues before they affect production schedules. The wide-range auxiliary supply allows retrofits in older control panels while maintaining compatibility with modern monitoring systems.

Support & Maintenance

The 269 Plus series is known for long service life, stable firmware, and straightforward field maintenance. Additionally, GE’s documentation and built-in self-diagnostics help technicians perform quick replacements or configuration checks. The relay includes a standard 12-month warranty, and most users experience dependable operation with minimal adjustments after commissioning.

FAQ

Q1: What makes the HI variant different?
A: The HI variant accepts a wider auxiliary voltage range, which supports installations with mixed AC and DC supply systems.

Q2: Can the relay learn motor characteristics automatically?
A: Yes, it measures inrush current, heating rates, and acceleration patterns to refine its thermal model.

Q3: Does it work with SCADA or DCS systems?
A: Yes, it supports RS-485 Modbus by default and offers optional Ethernet communication.

Q4: Is it suitable for high-temperature environments?
A: The relay operates reliably from –20 °C to +70 °C, which suits most industrial installations.

Q5: Can it monitor thermal capacity in real time?
A: Yes, the front-panel display shows thermal capacity, load, and imbalance values continuously.