GE 745-W2-P5-G5-HI-A-L-R-E-H Transformer Protection System – GE 745 Series Multifunction Transformer Protection Relay
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 safety risks to personnel. In high-voltage substations and industrial power distribution networks, a single unprotected fault can destroy a transformer valued at hundreds of thousands of dollars and halt entire production lines. The difference between a controlled trip and a catastrophic failure often comes down to one component — the transformer protection relay.
The GE 745-W2-P5-G5-HI-A-L-R-E-H is a flagship model within GE’s renowned 745 Series, engineered specifically for comprehensive protection of two-winding and three-winding power transformers. As part of GE Grid Solutions’ (now GE Vernova) globally trusted protection portfolio, the 745 Series has been deployed in utilities, petrochemical plants, data centers, and heavy industrial facilities across more than 80 countries. This specific variant — with its W2 dual-winding configuration, P5 protection package, G5 communications suite, HI high-impedance inputs, and integrated automation options (A-L-R-E-H) — represents one of the most fully specified transformer protection solutions available on the market today.
Technical Specifications
- Model: 745-W2-P5-G5-HI-A-L-R-E-H
- Manufacturer: General Electric (GE Grid Solutions / GE Vernova)
- Series: GE 745 Transformer Protection System
- Configuration: W2 — Two-Winding Transformer Protection
- Protection Package: P5 — Full protection function set
- Communications: G5 — Multiple protocol communications module
- Input Type: HI — High-impedance differential inputs
- Additional Options: A (Automation), L (Logic), R (Recording), E (Enhanced I/O), H (High-speed outputs)
- Weight: 7,540 g (approx.)
- SKU: 745-W2-P5-G5-HI-A-L-R-E-H
- Mounting: 19-inch rack / panel mount
- Standards Compliance: IEC 61850, IEEE C37.90, UL, CE (verify with official GE datasheet)
Note: Full electrical ratings, CT/VT input ranges, and output contact specifications are available upon request. Please contact Konmask.com for the official GE 745 datasheet.
Key Features & Benefits
- Comprehensive Differential Protection: Percentage restrained and unrestrained differential elements provide sensitive, secure protection against internal transformer faults while blocking operation on inrush and overexcitation conditions.
- High-Impedance Differential Inputs (HI): Designed for bus and restricted earth fault protection schemes, offering superior sensitivity in high-impedance grounding applications.
- Full Protection Suite (P5): Includes overcurrent (phase, ground, neutral), overfluxing (V/Hz), thermal overload, underfrequency, and breaker failure protection — all in a single relay chassis.
- IEC 61850 & Multi-Protocol Communications (G5): Supports GOOSE messaging, MMS, DNP3, and Modbus for seamless integration into modern digital substations and SCADA systems.
- Integrated Oscillography & Event Recording (R): Captures fault waveforms and sequence-of-events data for post-fault analysis and compliance reporting.
- Programmable Logic & Automation (A, L): FlexLogic™ programmable logic engine enables custom protection schemes and automation sequences without external PLCs.
- High-Speed Output Contacts (H): Minimizes fault clearing time, reducing arc energy and equipment damage.
- Enhanced I/O (E): Additional digital inputs and outputs for complex substation interlocking and control schemes.
- User-Friendly Interface: Front-panel LCD display, LED indicators, and EnerVista™ software for commissioning, settings management, and remote monitoring.
Industry & Equipment Applications
- Electric Utilities & Power Generation: Transmission and distribution substation transformer protection, generator step-up (GSU) transformer protection.
- Oil & Gas / Petrochemical: Refinery and offshore platform power transformer protection where continuous uptime is critical.
- Mining & Metals: Protection of large drive transformers and furnace transformers in harsh environments.
- Data Centers & Critical Infrastructure: Ensuring uninterrupted power supply to mission-critical loads.
- Pulp & Paper / Cement / Chemical Plants: Industrial power distribution transformer protection in continuous-process industries.
- Renewable Energy: Wind farm and solar plant collector transformer protection.
System Integration & Compatible Parts
The GE 745 integrates seamlessly within GE’s broader protection and control ecosystem. Compatible and commonly paired components include:
- GE UR Series protection relays (T60, L90, B90) for line and bus protection
- GE D60 Line Distance Protection System
- GE F60 Feeder Protection System
- GE EnerVista™ Viewpoint Monitoring software
- GE Multilin 850 Feeder Protection & Control
- Compatible with standard IEC 61850 substation automation systems from ABB, Siemens, Schneider Electric, and SEL
Contact Konmask.com to discuss complete protection panel configurations and compatible spare parts sourcing.
Our Quality Assurance Process
- Authenticity Verification: Every unit sourced through Konmask.com undergoes visual inspection and documentation review to verify manufacturer markings, serial numbers, and firmware labels.
- Functional Pre-Check: Where applicable, units are powered on and basic communication/self-test functions are verified prior to shipment.
- Secure Packaging: Anti-static packaging with shock-absorbing materials to protect sensitive electronics during international transit.
- Documentation Provided: Original GE manuals, test reports, and certificates of conformance available upon request.
- Warranty Support: Konmask.com provides post-sale technical support and warranty coordination for all supplied units.
How to Order
- Submit an Inquiry: Contact us via email at support@konmask.com or call +0086 19859288691 with your required quantity and delivery timeline.
- Receive a Quotation: Our team will provide a competitive price quote, lead time, and availability confirmation within 24 business hours.
- Order Confirmation: Upon agreement, we issue a proforma invoice and confirm payment terms (T/T, L/C, or other arrangements).
- Shipment & Tracking: Units are shipped via DHL, FedEx, or sea freight with full tracking information provided.
- After-Sales Support: Our technical team remains available for commissioning guidance and troubleshooting assistance.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC, DCS, and protection relay components — not a general electronics distributor.
- Global Sourcing Network: Access to genuine GE, Siemens, ABB, Rockwell, and Schneider Electric parts from verified supply channels.
- Fast Response: Dedicated B2B inquiry team with <24-hour response commitment.
- Competitive Pricing: Direct sourcing relationships enable us to offer market-competitive pricing on hard-to-find industrial components.
- Technical Expertise: Our team includes experienced automation engineers who can advise on compatibility, replacement options, and system integration.
- Trusted by Industry: Serving clients in power utilities, oil & gas, manufacturing, and infrastructure sectors worldwide.
Frequently Asked Questions
Q: What does the model suffix “W2-P5-G5-HI-A-L-R-E-H” mean?
A: Each segment of the GE 745 model number indicates a specific hardware or software option. W2 = two-winding configuration; P5 = full protection package; G5 = advanced communications module; HI = high-impedance differential inputs; A = automation functions; L = programmable logic; R = oscillography/recording; E = enhanced I/O; H = high-speed output contacts. This combination represents a fully-featured specification.
Q: Is the GE 745-W2-P5-G5-HI-A-L-R-E-H still in production?
A: The GE 745 Series has been a long-standing product line. Availability of new, refurbished, or surplus units varies. Contact Konmask.com for current stock status and lead times.
Q: Can this relay protect three-winding transformers?
A: The W2 designation indicates a two-winding configuration. For three-winding transformer protection, the GE 745 Series offers a W3 variant. Please contact us to confirm the correct model for your application.
Q: What communication protocols does the G5 module support?
A: The G5 communications module supports IEC 61850 (GOOSE + MMS), DNP3, and Modbus RTU/TCP. Specific protocol availability should be confirmed against the official GE 745 firmware release notes.
Q: Do you provide the GE EnerVista software and settings files?
A: GE EnerVista™ software is freely available from GE’s official website. Konmask.com can assist with sourcing settings templates and connecting you with commissioning support resources.
Q: What is the typical lead time for this model?
A: Lead time depends on current stock availability. In-stock units typically ship within 3–5 business days. For units requiring sourcing, lead times of 2–6 weeks are typical. Contact us for a precise timeline.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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