Description
3. Key Technical Specifications
- Protection Functions: Overcurrent, thermal, and feeder-specific elements
- Power Supply: High range (matches P1 option)
- Inputs/Outputs: Configured per order code (I/O and control options)
- Communications: Multiple protocols supported
- Mounting: Draw-out chassis design
- Display: Integrated HMI for local control
- Operating Temperature: Industrial range suitable for switchgear
- Certifications: Meets utility and industrial protection standards
- Firmware: Field-upgradable with proper matching
- Testing: Full functional verification including protection element simulation
4. Product Introduction & Supply Chain Strategy
The GE Multilin 350-E-P1-G1-H-E-S-C-P-2E-D-N is a microprocessor-based feeder protection relay for primary or backup protection of medium voltage distribution feeders, motors, transformers, and busbars. It combines protection, control, and metering in a compact draw-out package ideal for new installations or retrofits.
Acquiring this as New Surplus makes strong supply-chain sense for critical protection assets. These relays are often long-lead or obsolete in newer revisions, so buffer stock prevents protection gaps and costly outages. New Surplus eliminates refurbished risks such as internal aging that could compromise safety or reliability, providing excellent total cost of ownership through extended service life and reduced obsolescence exposure.
- 350-E-P1-G1-H-E-S-C-P-2E-D-N
- 350-E-P1-G1-H-E-S-C-P-2E-D-N
5. Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety) Execute lock-out/tag-out on the switchgear. Use an ESD wrist strap. Photograph the old relay’s DIP switch or settings, terminal block wiring, and rear connections.
Stage 2: Removal De-energize the chassis. Release the draw-out mechanism and slide the old relay out carefully to avoid stressing the backplane connections.
Stage 3: Installation (Clone & Seat) Set any configurable options on the new 350-E-P1-G1-H-E-S-C-P-2E-D-N to match the original. Insert the relay fully into the chassis until it seats and locks securely. Reconnect all terminal wiring exactly.
Stage 4: Power-On & Testing Verify power supply rails. Energize and check front panel LEDs and display for normal operation. Perform protection element tests, communication checks, and download/upload settings via EnerVista software.
6. Firmware/Software Versions & Upgrade Notes
Recommended firmware matches the installed base for the 350 series. Use EnerVista software to verify and manage versions.
Firmware upgrades can introduce new features but risk incompatibility with existing logic or SCADA mappings. Downgrading may cause feature loss or stability issues. Always document the current firmware, test in a lab environment if possible, and apply changes only during planned outages.
7. Frequently Asked Questions (FAQ)
Q: Is this GE Multilin 350 relay truly New Surplus? Yes. It is a genuine New Surplus unit, never installed, with original packaging and full QC verification including functional testing in a relay test set.
Q: Why is New Surplus priced higher than refurbished relays? Refurbished units can have undetected component wear that leads to false trips or failure to trip during faults — risks that are unacceptable in protection applications. New Surplus delivers OEM-level reliability and a proper warranty.
Q: Is this specific order code obsolete? Many 350 series configurations are reaching end-of-life as newer platforms emerge. Maintain strategic buffer stock to ensure continued protection without long procurement delays.
Q: Can the relay be hot-swapped? No. Protection relays require controlled replacement with the circuit de-energized. Follow all safety procedures to avoid unintended operations or equipment damage.
Q: Will settings transfer directly to the new relay? Settings are stored in the relay memory. Use EnerVista to download from the old unit (if possible) or upload a saved configuration file. Verify all protection elements and logic after installation.
Q: What warranty is provided? We offer a 1-2 year warranty on this New Surplus relay, supported by test reports. This significantly exceeds typical short warranties on refurbished protection gear.
Q: How do I confirm this exact configuration fits my application? Share your existing relay order code, application details, or single-line diagram. Our team validates compatibility and assists with settings migration to minimize commissioning time.
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