GE 745-W2-P5-G5-LO-A-L-R-E Multilin Transformer Protection Relay
Manufacturer: GE Fanuc
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Part Number: 745-W2-P5-G5-LO-A-L-R-E
Condition：New with Original Package
Product Type: Transformer Protection Relays
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE 745-W2-P5-G5-LO-A-L-R-E Multilin Series Transformer Protection Relay
The GE 745-W2-P5-G5-LO-A-L-R-E, also cataloged as the GE 745 Transformer Protection Relay, operates as a dedicated hardware component for primary differential protection, restricted earth fault detection, and breaker control within two-winding and three-winding power transformer networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 745-W2-P5-G5-LO-A-L-R-E |
| Brand | GE |
| Origin | USA |
| Weight | Standard SR series withdrawable case allocation |
| Dimensions | Standard SR series withdrawable dimensions |
| Operating Temp | -40 to +70 deg C (Storage: -40 to +85 deg C) |
| Power Consumption | Modular frame load dependent |
| Power Supply | 24-250 VDC / 48-240 VAC universal range |
| Protection Functions | Differential protection, restricted earth fault, phase and ground overcurrent, breaker failure, over/under voltage, frequency, over-fluxing, on-load tap changer monitoring |
| Analog Inputs | Current Transformer (CT) inputs rated at 5 A, Voltage Transformer (VT) inputs |
| Control Hardware | Breaker control, interlocking logic, synchronism check loops |
| Metering & Diagnostics | Current, voltage, frequency, demand, power, energy, harmonic distortion, oscillography, disturbance analysis, transformer thermal monitoring |
| Communication Protocols | IEC 61850, Modbus, DNP3, RS485, Ethernet TCP/IP |
| Mounting Layout | Standard SR series withdrawable case housing |
| Certifications | IEC, ANSI, CE, UL compliance |
Industrial Control Backplane and Deterministic Network Coupling
The 745-W2-P5-G5-LO-A-L-R-E runs continuous logic assessment loops across its internal bus structures to track electrical vector values derived from its 5 A CT inputs. The hardware supports seamless firmware flash compatibility to match internal algorithms with master substation automation platforms. Operating via integrated Ethernet networks running native IEC 61850 protocol stacks, the device handles real-time I/O density scaling during transient fault processes. This system maintains channel-to-channel isolation between measurement nodes to ensure protection activation during high-voltage harmonic distortion conditions without causing communication dropouts.
Frequently Asked Questions
Q: What specific analog current inputs match the hardware termination of this relay?
A: The physical current measurement circuitry is built for dedicated connection to external current transformers rated at a 5 A secondary output level.
Q: How does the internal processor monitor transformer thermal wear?
A: The internal firmware calculates transformer thermal monitoring trends and registers real-time values within the sequence of events and disturbance analysis memory blocks.
Q: What network protocols can run simultaneously over the communication ports?
A: The physical Ethernet TCP/IP and RS485 interfaces run IEC 61850 data maps alongside legacy Modbus and DNP3 architectures to maintain dual-channel connectivity with SCADA master units.
Field Installation Guidelines
- Chassis Rail Alignment and Insertion: Slide the modular withdrawable block smoothly along the internal channel guides of the SR series rack mount casing. Push firmly until the backplane terminal fingers engage the stationary terminal block completely, then lock the outer thumb latch to verify frame grounding continuity.
- CT Circuit Safety Procedures: Route all 5 A current transformer wiring through external terminal blocks equipped with shorting bars. Verify that the current transformer loops remain short-circuited before unlatching or pulling the active relay module from its energized enclosure.
- Signal Wire Shielding and Routing Paths: Conduct all network paths (Ethernet and RS485 lines) through dedicated wiring runs separate from high-current phase lines. Clamp the overall communication cable shields to the main copper grounding strip within the cubicle layout to block induced high-frequency noise.