GE Multilin 745-W2-P5-G5-HI-R-E Product Description

Description

The GE Multilin 745-W2-P5-G5-HI-R-E is a high-performance transformer protection relay developed for utilities and industrial power systems that require dependable fault detection and precise transformer monitoring. The relay supports multi-winding transformer configurations, allowing operators to protect complex assets with confidence. Moreover, its withdrawable SR-series chassis simplifies maintenance activities and speeds up field replacement. The enhanced front-panel display provides clear real-time data, therefore enabling faster operational decisions during demanding system conditions.

Technical Specifications

Model / Part Number: 745-W2-P5-G5-HI-R-E
Series: GE Multilin 745 Transformer Protection System
Type: Transformer Protection Relay
Manufacturer: GE Vernova (GE Grid Solutions)

Protection Functions

• Differential protection for two- or three-winding transformers

• Restricted earth fault protection

• Phase and ground overcurrent

• Breaker failure protection

• Over/under voltage and frequency

• Over-fluxing protection

Inputs & Sensing

• CT inputs: 5 A rated

• VT inputs for voltage monitoring

• RTD temperature inputs for transformer thermal tracking

Control & Logic

• Breaker control functions

• Interlocking and synchronism check

• Flexible I/O configuration

Monitoring & Diagnostics

• Event recording and oscillography

• Disturbance and fault analysis

• Thermal modeling for transformer loading

Metering

• Voltage, current, and frequency

• Demand values and power data

• Harmonic measurement with THD

Communications

• Modbus

• DNP3

• IEC 61850 (varies by configuration)

• Supported by EnerVista 745 software

Environmental & Mechanical

• Operating temperature: –40 °C to +60 °C

• Storage temperature: –40 °C to +80 °C

• Humidity: Up to 90% non-condensing

• Mounting: SR-series draw-out case

• Compliance: IEEE, ANSI, NEMA

FAQ

Q1: Does this relay support IEC 61850?
Yes. Specific configurations, including this model, support IEC 61850 for advanced automation.

Q2: Can the 745 relay handle multi-winding transformers?
Yes. It offers differential protection for two- and three-winding transformers.

Q3: Is the relay suitable for high-humidity environments?
Yes. It operates reliably up to 90% non-condensing humidity.

Q4: How is event data retrieved for analysis?
Event records and oscillography can be accessed through EnerVista 745 software.

Q5: Is the relay withdrawable for maintenance?
Yes. The SR-series case allows fast removal and replacement during service activities.