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Product Name: processor transformer protection system
Brand Name: GE
Model Number:745-W3-P511-G51-HI-R-E-H
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-H |
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: |
The GE Multilin 745-W3-P511-G51-HI-R-E-H is a digital transformer management relay from the 745 series. Designed for three-winding transformers, the 745-W3-P511-G51-HI-R-E-H integrates percent differential, overcurrent, frequency, and overexcitation protection into a single package . The GE 745 features an enhanced LCD display, restricted ground fault detection (R option), and conformal coating (H option). With 16 logic inputs, 8 output relays, and 7 analog outputs, the 745-W3-P511-G51-HI-R-E-H offers comprehensive protection and monitoring for power transformers in demanding industrial environments .
Three-winding power transformer protection
Autotransformer and reactor protection
Generator step-up transformers
Industrial substation feeders
Utility power distribution networks
Adaptive harmonic restraint: Prevents false tripping during inrush conditions
Percent differential protection: Dual-slope characteristic with harmonic inhibit
Restricted ground fault (R): Sensitive ground fault detection for impedance-grounded windings
Flexible overcurrent curves: ANSI, IEC, IAC, and FlexCurves™
Enhanced LCD display: 40-character backlit screen for easy menu navigation
Multiple communication ports: RS232, RS485, Modbus RTU, DNP, optional Ethernet
16 logic inputs + 8 output relays: Flexible I/O configuration
Conformal coating (H): Protection against harsh environments
Fully drawout case: Automatic CT shorting for safe removal
Protects three-winding transformers using percent differential and overcurrent elements
Monitors harmonics, total harmonic distortion (THD), and harmonic derating
Calculates transformer loss-of-life and hottest-spot temperature
Records 256 events with time-stamping and oscillography
Communicates via RS232/RS485 ports using Modbus RTU or DNP 3.0
Enables remote monitoring and control through SCADA integration
Q1: What does the model number 745-W3-P511-G51-HI-R-E-H mean?
A1:W3 = three windings, P511 = 5A/1A/1A phase CTs, G51 = 5A/1A ground CTs, HI = high control power, R = restricted ground fault, E = enhanced display, H = harsh environment coating.
Q2: What transformers can the 745-W3-P511-G51-HI-R-E-H protect?
A2:The745-W3-P511-G51-HI-R-E-H protects three-winding transformers, autotransformers, and reactors.
Q3: What is the restricted ground fault (R) feature?
A3:The R option provides sensitive ground fault detection for impedance-grounded wye windings using a low-impedance current differential scheme.
Q4: What communication protocols does the 745-W3-P511-G51-HI-R-E-H support?
A4:The 745-W3-P511-G51-HI-R-E-H supports Modbus RTU, DNP 3.0, and optional Ethernet.
Q5: What does the H (harsh environment) option provide?
A5:The H option applies conformal coating to protect the PCB against dust, humidity, and chemicals.
Inguiry Now: [email protected]
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