GE 269PLUS-D/O-100P-125VDC Motor Protection Relay | Multilin 269 Plus Series
Engineering Background
The GE Multilin 269 Plus is a purpose-built digital motor management relay developed by GE Grid Solutions for demanding industrial motor protection applications. Engineered to replace legacy electromechanical relays, the 269 Plus platform integrates comprehensive protection, metering, and diagnostics into a single DIN-rail or panel-mount unit, reducing wiring complexity and improving system reliability across MV/LV motor control centers.
Product Positioning
The 269PLUS-D/O-100P-125VDC variant is configured with a Digital/Output (D/O) communication module and a 100–125 V DC auxiliary power supply input, making it the preferred choice for substations and industrial facilities operating on DC battery-backed control power. This unit is sourced directly from verified OEM channels and is available for immediate dispatch from Konmask’s global inventory.
Complete Technical Specifications
- Manufacturer: GE Grid Solutions (formerly GE Multilin)
- Series / Platform: Multilin 269 Plus
- Model / SKU: 269PLUS-D/O-100P-125VDC
- Module Type: Digital/Output (D/O) Communication & I/O Module
- Auxiliary Power Supply: 100–125 V DC (nominal 125 VDC)
- Protection Functions: Thermal overload (49), Phase overcurrent (51), Ground fault (50G/51G), Undercurrent (37), Phase unbalance/loss (46), Stall/locked rotor (48/14), Thermistor (49T), Starts-per-hour & start inhibit
- Metering: Three-phase current (A, B, C), Ground current, Thermal capacity used (%), Motor load (%FLA), Running hours, Number of starts
- Communication: RS-485 serial (Modbus RTU) via D/O module
- Outputs: Multiple programmable relay output contacts (Trip, Alarm, Auxiliary)
- Inputs: Digital status inputs for motor control interlocking
- Display: Alphanumeric LCD with LED status indicators
- Mounting: Panel-mount (flush), 19″ rack-compatible cutout
- Operating Temperature: −20 °C to +60 °C
- Storage Temperature: −40 °C to +85 °C
- Humidity: 5–95% RH, non-condensing
- Weight: 5.04 kg (as shipped)
- Standards Compliance: IEC 60255, IEEE C37.90, UL 508
Proven Application Environments
- Medium-voltage motor control centers (MCC) in oil & gas upstream/downstream facilities
- Petrochemical plant pump and compressor motor protection
- Mining conveyor and crusher drive protection systems
- Water/wastewater treatment plant motor management
- Power generation auxiliary motor protection (boiler feed pumps, fans, cooling towers)
- Substation battery-backed DC control systems (125 VDC bus)
- Pulp & paper mill drive protection and SCADA integration via Modbus RTU
Engineering Advantages
- Unified Protection & Metering: Replaces multiple discrete relays with a single intelligent device, reducing panel space by up to 60%.
- DC Power Compatibility: 100–125 VDC input suits battery-backed substation environments where AC power is unavailable during fault conditions.
- Modbus RTU Integration: Native RS-485 Modbus RTU via D/O module enables seamless integration with DCS, SCADA, and PLC systems without additional protocol converters.
- Thermal Model Accuracy: Adaptive thermal memory retains motor thermal state through power cycles, preventing premature restart after trip events.
- Programmable Outputs: Flexible output contact assignment allows site-specific trip/alarm logic without hardware modification.
- Event & Fault Recording: Onboard data logging captures pre-fault current waveforms and event timestamps for post-incident analysis.
System Architecture & Signal Flow
The 269PLUS-D/O-100P-125VDC operates as a standalone intelligent electronic device (IED) within the motor protection loop:
- Current Inputs: Three-phase CTs (5 A or 1 A secondary) + optional ground CT → 269 Plus analog input board
- Thermistor Input: PTC/NTC thermistor from motor winding → thermal protection channel
- Digital Inputs: Motor running/stopped status, remote reset, inhibit signals → D/O module digital input terminals
- Relay Outputs: Trip coil, alarm annunciator, auxiliary contacts → MCC contactor/circuit breaker control circuit
- Communication: RS-485 (2-wire) Modbus RTU → DCS/SCADA/PLC host via D/O module RJ-45 or terminal block
- Power: 125 VDC station battery bus → internal SMPS → all relay subsystems
Sourcing & Quality Verification
- Origin: Genuine GE Grid Solutions OEM hardware; not aftermarket or remanufactured
- Condition: New surplus or refurbished-to-OEM-spec with full functional test
- Traceability: Serial number and date code verified against GE manufacturing records where applicable
- Inspection: Visual, dimensional, and power-on functional verification performed prior to shipment
- Packaging: Anti-static ESD bag + foam-lined export carton; meets ISTA 2A transit standards
- Documentation: GE Multilin 269 Plus Instruction Manual (GEK-106288) available upon request
Procurement Process
- Inquiry: Submit your RFQ via Konmask.com product page or email support@konmask.com with quantity and delivery requirements.
- Quotation: Receive a formal quotation with unit price, lead time, and shipping options within 1 business day.
- Order Confirmation: Purchase order accepted via Shopify checkout, bank transfer (T/T), or PayPal.
- Quality Check: Pre-shipment inspection report issued upon request.
- Shipment: DHL / FedEx / UPS express or sea freight; tracking number provided within 24 hours of dispatch.
- After-Sales: 12-month warranty against manufacturing defects; technical support via email and WhatsApp.
Technical FAQ
Q: Is the 269PLUS-D/O-100P-125VDC compatible with 110 VDC systems?
A: Yes. The auxiliary power input range is 100–125 VDC, covering both 110 VDC and 125 VDC nominal station battery systems.
Q: What is the difference between the D/O module and the standard 269 Plus?
A: The D/O (Digital/Output) module adds RS-485 Modbus RTU communication capability and additional programmable digital I/O points not present in the base unit.
Q: Can this relay be configured with EnerVista software?
A: Yes. GE EnerVista 269 Plus Setup software (free download from GE Grid Solutions) supports full parameter configuration, event log download, and firmware updates via the RS-485 port.
Q: What CT ratio is required?
A: The 269 Plus accepts standard 5 A or 1 A secondary CTs. CT ratio is programmable via the front panel or EnerVista software to match the motor FLA.
Q: Do you provide a certificate of conformance (CoC)?
A: Yes, a CoC is available upon request for all orders. Third-party inspection (SGS, BV) can be arranged for large-volume orders.
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