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Product Name: Feeder Management Relay
Brand Name: GE
Model Number:745-W3-P511-G51-HI-R-E
Country of Origin:USA
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
General Electric |
Model Number: |
745-W3-P511-G51-HI-R-E |
Country of Origin: |
USA |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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Send an email: |
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Contact in Whatsapp: |
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Manufacturer |
General Electric (GE) – Multilin |
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Part Number |
745-W3-P511-G51-HI-R-E |
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Product Series |
Multilin 745 / SR Series |
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Product Type |
Transformer Management Relay / Transformer Protection System |
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Windings per Phase (W3) |
Three windings |
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Phase Current Inputs (P511) |
Winding 1 = 5 A, Winding 2 = 1 A, Winding 3 = 1 A |
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Ground Current Inputs (G51) |
Winding 1/2 = 5 A, Winding 2/3 = 1 A |
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Control Power (HI) |
High range: 90–300 V DC; 70–265 V AC @ 48–62 Hz |
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Restricted Ground Fault (R) |
Included (Zero-sequence differential for sensitive ground fault detection) |
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Display (E) |
Enhanced backlit LCD, 40 characters, improved menu navigation |
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Analog Inputs/Outputs |
Yes (field-upgradable) |
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Loss of Life Monitoring |
Included (per IEEE C57.91-1995 / C57.96-1989) |
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Communication Ports |
Front: RS232; Rear: RS485/RS422; Optional: 10BaseT Ethernet |
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Communication Protocols |
Modbus RTU, DNP 3.0 Level 2, Modbus TCP/IP (over Ethernet) |
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Logic Inputs |
16 (dry or wet contact) |
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Output Relays |
9 (1 solid-state, 4 Form-A trip-rated, 4 Form-C auxiliary) |
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Analog Outputs |
7 programmable (0–1 mA, 0–5 mA, 0–10 mA, 0–20 mA, or 4–20 mA) |
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RTD Inputs |
12 (3-wire: 100 Ω Pt, 100 Ω Ni, 120 Ω Ni) |
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Sampling Rate |
64 samples per cycle |
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Event Recorder |
256 time-tagged events |
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Oscillography |
10 records, up to 32 power cycles each |
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Data Logger |
8 channels, user-programmable sampling interval |
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IRIG-B Input |
Amplitude-modulated (1–10 Vpp) or TTL |
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Operating Temperature |
–40°C to +60°C |
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Storage Temperature |
–40°C to +80°C |
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Humidity |
Up to 90% non-condensing |
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Dimensions (H × W × D) |
21.5x23x25.2cm |
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Net Weight |
7.78kg |
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Mounting |
Drawout case with automatic CT shorting; panel-mount or 19-inch rack |
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Software |
EnerVista 745 Setup (included, Windows-based) |
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Country of Origin |
USA |
The GE 745-W3-P511-G51-HI-R-E is a three‑winding transformer protection relay from the Multilin 745 series. It combines dual‑slope percent differential (87T) with second‑harmonic inrush blocking, restricted ground fault, and a full overcurrent suite. The GE 745-W3-P511-G51-HI-R-E supports mixed CT inputs (5A + 1A) and a wide‑range 90–300 VDC power supply. The enhanced display and drawout case simplify maintenance. Modbus/DNP communication enables SCADA integration.
Three‑winding power transformers (primary/backup)
Generator step‑up (GSU) units
Autotransformers and reactors
Industrial substations (refineries, steel mills)
Renewable energy (solar/wind farm transformers)
Mixed CT ratios – 5A on W1, 1A on W2/W3 (P511)
Restricted ground fault (R) – zero‑sequence differential for sensitive ground detection
Dual‑slope differential – slope‑1 (15–100%), slope‑2 (50–100%), adjustable kneepoint
Enhanced display (E) – 40‑character backlit LCD, menu‑driven navigation
Wide‑range power (HI) – 90–300 VDC / 70–265 VAC
Drawout case – hot‑swappable without rewiring
FlexLogic™ – programmable logic for custom tripping
Auto‑CT config – automatic phase/magnitude/zero‑seq correction
Loss‑of‑life monitoring – per IEEE C57.91
EnerVista software – configuration, waveform capture, event analysis
Differential protection – vector sum comparison with harmonic restraint
Ground fault detection – restricted ground (zero‑seq differential) for low‑magnitude faults
Backup overcurrent – phase, neutral, ground, negative‑sequence (IOC/TOC)
Overexcitation protection – V/Hz with definite‑time or inverse curves
Load shedding – underfrequency (2), overfrequency, rate‑of‑change (4)
Asset monitoring – hottest‑spot temperature, aging factor, loss‑of‑life
Event/fault recording – 256 events + 10 oscillography records
SCADA communication – Modbus RTU, DNP 3.0, optional Modbus TCP/IP
Q1: What does P511 mean?
A1: P511 means phase CTs are 5A on Winding 1 and 1A on Windings 2 and 3 – ideal for retrofits with mixed CT types.
Q2: Does the 745-W3-P511-G51-HI-R-E include restricted ground fault?
A2: Yes. The R suffix adds zero‑sequence differential (restricted ground fault) for sensitive detection of low‑magnitude ground faults.
Q3: Can the relay be removed without powering down the transformer?
A3: Yes. The drawout case with automatic CT shorting allows safe removal for bench testing while the panel remains energized.
Q4: What software is needed?
A4: EnerVista 745 Setup (free, included) – Windows‑based configuration, monitoring, and fault analysis.
Q5: Is the display improved over basic models?
A5: Yes. The ‑E suffix provides a larger 40‑character backlit LCD with redesigned keypad and menu‑driven navigation for easier local use.
Inguiry Now: [email protected]
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