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The GE Multilin 745-W2-P5-G5-HI-E is an advanced two‑winding transformer protection relay. It provides comprehensive protection, metering, monitoring, and communication for power transformers in substations and industrial power systems. With high accuracy, wide temperature range, and IEC 61850 Ethernet capability, it ensures reliable and secure operation.
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Model: 745-W2-P5-G5-HI-E
Series: GE Multilin SR745 Transformer Protection Relay
Application: Two‑winding power transformer protection, monitoring and control
Voltage: 70–265 VAC, 48–62 Hz / 90–300 VDC
Power consumption: < 15 W
Current Inputs: 5 A nominal, 3 phase currents + 1 residual current
Voltage Inputs: 4 voltage channels (60–120 V nominal)
Digital Inputs: 16 optically isolated programmable inputs
RTD Inputs: 12 channels, supporting Pt100, Ni100, Ni120
Analog Inputs: 4 programmable 4–20 mA inputs
Relay Outputs: 6 Form A contacts, 5 A @ 250 VAC / 30 VDC
Analog Outputs: 7 programmable 4–20 mA outputs
Alarm & Control Outputs: Configurable for fault, status and control functions
Transformer differential protection with harmonic restraint
Phase overcurrent / earth fault overcurrent protection
Over / under voltage & frequency protection
Thermal overload & transformer hotspot temperature monitoring
Overexcitation protection (Volts/Hz)
Fuse failure detection & breaker failure protection
Sequence and negative sequence protection
Event recording, fault waveform capture & disturbance recording
Ethernet: 10/100 Mbps, IEC 61850
RS‑232, RS‑485 (Modbus RTU, DNP3.0)
Front USB port for configuration & diagnostics
Operating Temperature: -40°C to +60°C
Storage Temperature: -40°C to +85°C
Humidity: 5–95% RH non‑condensing
Enclosure Rating: Front panel IP20, rear IP40
Dimensions: 229 mm H × 178 mm W × 181 mm D
Weight: Approx. 7.5 kg
