GE Multilin 745-W2-P5-G5-HI-R-E-H Transformer Protection & Management Relay – GE 745 Series
When a power transformer fails without adequate protection, the consequences cascade instantly: arc flash events, catastrophic winding damage, unplanned outages lasting days or weeks, and production losses that can reach millions of dollars per hour. In substations and industrial power systems where transformer reliability is non-negotiable, the absence of a dedicated transformer management relay is not a risk — it is a liability. The GE Multilin 745-W2-P5-G5-HI-R-E-H was engineered precisely to eliminate that liability.
The GE Multilin 745 Series is one of the most widely deployed transformer protection platforms in the global power industry. The 745-W2-P5-G5-HI-R-E-H variant represents a fully optioned configuration within this series, combining differential protection, thermal modeling, harmonic restraint, and advanced communications into a single IED (Intelligent Electronic Device). Trusted by utilities, petrochemical plants, data centers, and heavy industry across more than 100 countries, the 745 Series sets the benchmark for transformer asset management in modern power systems.
Technical Specifications
- Model: 745-W2-P5-G5-HI-R-E-H
- Brand / Manufacturer: GE Multilin (General Electric)
- Series: GE Multilin 745 Transformer Management Relay
- Form Factor: 19-inch rack-mount / panel-mount IED
- Protection Functions: Differential (87T), Overcurrent (50/51), Restricted Earth Fault (64), Thermal Overload (49), Buchholz / sudden pressure input support
- Harmonic Restraint: 2nd and 5th harmonic blocking for inrush stability
- CT Inputs: Multi-winding support (W2 = 2-winding configuration)
- Power Supply: P5 option (wide-range DC/AC auxiliary power)
- Communications: G5 option — IEC 61850 GOOSE + DNP3 + Modbus RTU/TCP
- Human-Machine Interface: HI option — enhanced front-panel LCD display and keypad
- Output Relays: R option — expanded output relay contacts
- Event Recording: E option — extended event log and fault recording
- High-Speed I/O: H option — high-speed digital inputs for breaker status monitoring
- Weight: 7.48 kg
- Compliance: IEC 60255, IEEE C37.90, CE Marked
Key Features & Benefits
- Comprehensive Differential Protection: Percentage differential with harmonic restraint prevents false trips during energization while ensuring fast, decisive fault clearance.
- IEC 61850 Native Support: Seamless integration into digital substation architectures with GOOSE messaging for sub-cycle protection coordination.
- Thermal Modeling: Real-time thermal replica tracks winding hot-spot temperature, extending transformer life and preventing insulation degradation.
- Multi-Protocol Communications: DNP3, Modbus RTU/TCP, and IEC 61850 enable integration with any SCADA or DCS platform without protocol converters.
- Enhanced HMI: Front-panel LCD with intuitive menu navigation reduces commissioning time and simplifies on-site diagnostics.
- Expanded Event & Fault Recording: Oscillographic fault records and time-stamped event logs accelerate post-fault analysis and regulatory reporting.
- High-Speed Digital Inputs: Breaker status and external trip signals processed in <1 ms for precise protection coordination.
Industry & Equipment Applications
- Electric Utilities & Substations: Transmission and distribution transformer protection at 11 kV to 500 kV voltage levels.
- Oil & Gas: Offshore platform and refinery main power transformers requiring SIL-rated protection.
- Data Centers: Critical UPS and main transformer protection for Tier III/IV facilities.
- Petrochemical & Chemical Plants: Motor-feeder and process transformer protection in hazardous area substations.
- Mining & Metals: High-current transformer protection for smelting and ore processing facilities.
- Renewable Energy: Wind farm and solar plant step-up transformer protection and monitoring.
- Industrial Manufacturing: Main incomer transformer protection for large automotive, steel, and paper mills.
System Integration & Compatible Parts
The GE Multilin 745-W2-P5-G5-HI-R-E-H is designed to operate within GE’s broader protection and control ecosystem. Compatible and commonly paired components include:
- GE Multilin 850 / 869 Feeder & Motor Protection Relays (upstream/downstream coordination)
- GE UR Series Universal Relay platform (bay-level protection integration)
- GE EnerVista 745 Setup Software (configuration, commissioning, and event retrieval)
- GE Multilin SR750 / SR760 Feeder Management Relays (distribution feeder coordination)
- IEC 61850 Ethernet switches compatible with GOOSE messaging (e.g., Hirschmann, Moxa)
- Replacement CT shorting terminal blocks and test plugs for 745 series panel wiring
Our Quality Assurance Process
At Konmask.com, every GE Multilin relay we supply undergoes a rigorous multi-stage verification process before shipment:
- Authenticity Verification: Serial number and firmware version cross-checked against GE Multilin’s authorized supply chain records.
- Visual & Physical Inspection: Housing integrity, terminal block condition, front-panel display, and label legibility inspected by trained technicians.
- Functional Power-On Test: Unit powered and self-diagnostic routines confirmed to pass before packaging.
- Original Packaging & Documentation: Shipped with original GE Multilin manuals, test certificates, and factory calibration records where available.
- Export Compliance: All units cleared for international export with proper commercial documentation.
How to Order
- Submit your inquiry via the Contact / Request a Quote form on this page.
- Provide your required quantity, delivery timeline, and destination country.
- Our technical team will confirm availability, lead time, and issue a formal quotation within 24 hours.
- Upon PO confirmation, we arrange secure packaging and international freight (DHL / FedEx / sea freight).
- Tracking information and shipping documents (commercial invoice, packing list, COO) provided upon dispatch.
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation & Power Protection: We focus exclusively on PLC, DCS, relay, and drive components — not a generalist marketplace.
- ✅ Global B2B Supply: Serving engineering firms, EPCs, utilities, and MRO teams in 60+ countries.
- ✅ Technical Pre-Sales Support: Our engineers can assist with compatibility checks, firmware version selection, and application guidance.
- ✅ Fast Quotation: Formal quotes issued within 24 business hours of inquiry receipt.
- ✅ Secure International Shipping: Full export documentation, insurance options, and DDP/DAP Incoterms available.
- ✅ Long-Term Partnership: Repeat customers benefit from priority stock allocation and dedicated account management.
Frequently Asked Questions
- Q: What does the model suffix 745-W2-P5-G5-HI-R-E-H mean?
- A: Each suffix character denotes a factory-configured option: W2 = 2-winding differential, P5 = wide-range power supply, G5 = IEC 61850 + DNP3 communications, HI = enhanced HMI display, R = expanded output relays, E = extended event recording, H = high-speed digital inputs.
- Q: Is this unit new, refurbished, or used?
- A: Please specify your requirement when submitting an inquiry. We can source new (factory-sealed), tested-surplus, and certified-refurbished units depending on availability and your budget.
- Q: Can you provide the GE EnerVista configuration software?
- A: GE EnerVista 745 Setup Software is freely available from GE Multilin’s official website. We can assist with version compatibility guidance upon request.
- Q: What is the typical lead time?
- A: Lead time varies by stock availability. In-stock units typically ship within 3–5 business days. Out-of-stock items may require 4–8 weeks sourcing lead time. Contact us for current availability.
- Q: Do you provide a warranty?
- A: Yes. We offer a standard 12-month warranty against manufacturing defects on all units supplied. Extended warranty options are available upon request.
- Q: Can you supply other GE Multilin 745 variants?
- A: Yes. We regularly source multiple 745 series configurations. Submit your exact model number and we will confirm availability and pricing.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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