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

Overview

The GE Multilin 269PLUS‑D/O‑111‑100P‑HI is a drawout motor protection relay designed to safeguard medium-sized AC motors in demanding industrial environments. It provides advanced thermal modeling, current and voltage monitoring, and rapid fault detection to ensure motors operate reliably and efficiently. Moreover, it integrates seamlessly with automation systems, offering real-time diagnostics and event recording for proactive maintenance.

Key Features and Benefits

• Comprehensive protection against overloads, phase imbalances, ground faults, and short circuits.

• Thermal overload modeling using RTD inputs to prevent motor overheating and damage.

• Real-time monitoring of current, voltage, and load conditions enhances operational safety.

• Flexible communication options, including RS485 with Modbus RTU, support SCADA integration.

• User-friendly front panel with LED/LCD display enables local control and easy configuration.

• Reduces maintenance costs through predictive monitoring and event history analysis.

• Drawout design allows quick installation and removal without system downtime.

Technical Specifications

• Rated Current: 100 A (CT input range)

• Control Power Supply: 90–300 V DC / 80–265 V AC

• Protection Functions:

• Thermal overload (supports 10 Ω copper RTD)

• Phase imbalance and phase loss detection

• Ground fault detection

• Overcurrent and short-circuit protection

• Undercurrent monitoring for load loss detection

• Inputs/Outputs:

• Digital inputs for control signals

• 4 relay outputs for trip, alarm, and auxiliary functions

• Communication Interfaces: RS485 with Modbus RTU; optional Ethernet modules

• Operating Temperature: –20 °C to +70 °C

• Mounting: Panel-mount, drawout version

• Display: LED/LCD indicators for real-time status and fault codes

• Weight: 2.3 kg

Typical Applications

The 269PLUS‑D/O‑111‑100P‑HI relay protects motors in pumps, fans, compressors, conveyors, and other industrial machinery. It integrates seamlessly into existing control systems, ensuring motors operate safely and efficiently under fluctuating load conditions. For instance, it can prevent costly downtime in water treatment plants or manufacturing facilities by detecting abnormal operating conditions early.

Support & Maintenance

GE Multilin offers comprehensive support, including firmware updates, calibration services, and technical guidance. Regular monitoring of event logs helps engineers plan predictive maintenance, extend motor lifespan, and reduce unexpected failures.

FAQ

Q: What types of motors can this relay protect?
A: It is suitable for medium-sized AC motors used in pumps, fans, compressors, and conveyors.

Q: Does it support SCADA integration?
A: Yes, it communicates via RS485 Modbus RTU and optional Ethernet modules.

Q: Can I connect RTDs for thermal protection?
A: Yes, it supports 10 Ω copper RTDs for precise thermal overload monitoring.

Q: What is the operating temperature range?
A: The relay operates safely between –20 °C and +70 °C.

Q: How easy is installation and maintenance?
A: The drawout design allows quick installation, removal, and maintenance without system downtime.