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Key Technical Specifications
| Parameter | Value |
| Catalog Series | Multilin 469 |
| Compatible Motors | Medium & High-Voltage Three-Phase Induction and Synchronous Motors |
| Phase Current Inputs | 1 A or 5 A secondary CT inputs (field selectable via model) |
| Ground Current Input | 1 A / 5 A standard CT or 50:0.025 Zero-Sequence Ground CT |
| RTD Inputs | 12 assignable RTD inputs (100 Ω Platinum, 120 Ω Nickel, 10 Ω Copper, 100 Ω Nickel) |
| Analog Inputs / Outputs | 4 Programmable Analog Inputs (4–20 mA) |
| Control Power Options | High (90–300 VDC / 70–265 VAC) or Low (20–60 VDC / 20–48 VAC) |
| Communication Ports | Front RS232, Dual Rear RS485 (Modbus RTU), optional 10Base-T Ethernet (Modbus TCP/IP) |
| Protection Elements | Thermal Overload (51), Stator RTD (49), Locked Rotor (48/51R), Ground Fault (50G/51G), Undercurrent (37), Voltage/Frequency (27/59/81) |
| Enclosure / Construction | Fully drawout design with automatic CT shorting switches |
Product Introduction & Supply Chain Strategy
The GE Multilin 469 is an industry-standard, microprocessor-based protection relay designed for critical medium- and high-voltage motor applications across power generation, oil & gas, mining, water, and heavy industrial processing facilities. By combining complex thermal biasing algorithms, current/voltage protection functions, and 12-channel RTD temperature monitoring into a single drawout chassis, the Multilin 469 prevents thermal breakdown, mechanical overloads, and electrical faults.
Maintaining factory-sealed New Surplus GE Multilin 469 relays on-site is a essential strategy for plant electrical engineering teams. Sourcing New Surplus avoids major failure modes observed in second-hand units, such as degraded electrolytic power supply capacitors, corrupted EEPROM calibration matrices, and worn drawout backplane contact fingers. Keeping pre-tested replacement units in reserve ensures instant hot-swap restoration in the event of a relay failure, avoiding multi-day facility shutdowns.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Lock-Out/Tag-Out (LOTO): De-energize, isolate, and lock out the motor breaker or contactor cell before servicing or sliding out the relay unit.
- CT Shorting Verification: Confirm that current transformer (CT) shorting blocks engage automatically when removing the drawout unit from its sleeve.
- Control Power Setup: Verify system auxiliary supply matches the relay control power rating specified on the side nameplate (HI: 90–300 VDC / 70–265 VAC or LO: 20–60 VDC / 20–48 VAC).
Stage 2: Removal
- Loosen the front safety retaining screws on the drawout handle mechanism.
- Pivot the locking handle upward to disengage the rear terminal block connections.
- Slide the internal relay chassis straight out of its outer mounting sleeve.
Stage 3: Installation (Clone & Seat)
- Ensure the outer sleeve is securely panel-mounted and free of foreign debris or wiring strain.
- Carefully align the replacement 469 chassis with the guide rails inside the drawout sleeve.
- Push the relay chassis smoothly into the sleeve until the rear multipin connectors engage, then press the locking handle down to lock the unit in place and tighten the safety screws.
Stage 4: Power-On & Testing
- Apply control power and observe the boot-up diagnostic self-test sequence.
- Confirm the RELAY IN SERVICE LED illuminates solid green and no system hardware faults are displayed.
- Connect via EnerVista Setup Software (via front RS232 or rear RS485/Ethernet) to upload or verify saved setpoint configuration files (
.469files).
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469
Firmware/Software Versions & Upgrade Notes
- Software Interface: Programmed and monitored using GE EnerVista 469 Setup Tool.
- Setpoint Transfer: Setpoint files can be backed up and written directly to replacement units via serial or Modbus communication ports.
- Firmware Flashing: Firmware upgrades are performed via EnerVista software; ensure current settings files are saved locally prior to initiating firmware updates.
Frequently Asked Questions (FAQ)
Is this GE Multilin 469 unit guaranteed to be New Surplus and not refurbished?
Yes. This module is 100% Brand New Surplus stock in original OEM factory packaging. It has never been racked into a live switchgear cell, exposed to field power conditions, or subjected to circuit board repairs.
What is the advantage of the Multilin 469 drawout design?
The drawout construction allows the internal relay electronics unit to be removed from its outer case without disturbing rear panel wiring. Automatic CT shorting switches short-circuit the CT secondary loops when the unit is pulled out, enabling safe, rapid field swapping without shutting down the entire switchgear section.
How do I decipher the option codes in a 469 model number (e.g., 469-P5-HI-A20-E)?
- P5 / P1: 5 A or 1 A Phase CT secondaries.
- HI / LO: High (90–300 VDC / 70–265 VAC) or Low (20–60 VDC / 20–48 VAC) Control Power.
- A20 / A1: Analog Output selection (4–20 mA or 0–1 mA).
- E / Basic: Ethernet communications option (Modbus TCP/IP) or standard RS485.
Can I replace an older revision 469 relay with a newer revision chassis?
Yes, the drawout chassis design allows physically identical swaps within the same option configuration family. Setpoint files saved from older revisions can be converted using EnerVista software to match updated firmware platforms.
What warranty protection comes with this New Surplus relay?
We back this GE Multilin 469 New Surplus motor protection relay with a full 1-year replacement warranty. Every unit undergoes strict physical checks, power supply testing, and anti-static protective packaging prior to dispatch.
