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Home>PLC>General Electric>GE Multilin 745-W3-P5-G5-HI-A-L-R-E-H 3-Winding Transformer Protection Relay
GE Multilin 745-W3-P5-G5-HI-A-L-R-E-H 3-Winding Transformer Protection Relay

GE Multilin 745-W3-P5-G5-HI-A-L-R-E-H 3-Winding Transformer Protection Relay

Item NO.: 745-W3-P5-G5-HI-A-L-R-E-H

Price:Request a Quote

Warranty:1 year

Condition:Brand new and factory sealed

Inquire Email:sales1@apterpower.com

Mobile/WhatsApp:+8618020776782

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Detail

  • Product NameGE Multilin 745-W3-P5-G5-HI-A-L-R-E-H 3-Winding Transformer Protection Relay
  • Item NO.745-W3-P5-G5-HI-A-L-R-E-H
  • Weight8.3348 kg = 18.3751 lb = 294.0014 oz
  • CategoryPLC> General Electric
  • Creation Time2026-11-04
  • GE Multilin 745-W3-P5-G5-HI-A-L-R-E-H protects a three-winding transformer with differential, restricted-ground-fault and asset-monitoring options. Product dimensions: 20.8 x 22 x 24.6 cm.

GE Multilin · 745 Transformer Protection System

745-W3-P5-G5-HI-A-L-R-E-H | 3-Winding Transformer Protection Relay
01

Contact info

Sales manager: Jim Pei

Wechat: ZXH18020776782

Email: sales1@apterpower.com

Phone/WhatsApp: +86 18020776782

02

Specifications

Windings per phase 3
Configured phase and ground CT rating 5 A
High-range DC control supply 90–300 VDC
High-range AC control supply 70–265 VAC
Control supply frequency 48–62 Hz
Control-power consumption 30 VA nominal; 40 VA maximum
Phase/ground input conversion range 0.02–46 x CT
CT input burden Less than 0.2 VA at rated load
Current withstand, short duration 80 x rated for 1 second; 40 x rated for 2 seconds
Continuous current withstand 3 x rated current
Source CT primary setting 1–50000 A
Configured analog inputs 4
Analog input signal selections 0–1, 0–5, 0–10, 0–20 or 4–20 mA
Analog input impedance 375 ohm ±10%
Analog input conversion range 0–21 mA
Analog I/O accuracy ±1% of full scale
Configured analog outputs 7
Analog output isolation Fully isolated
Logic contact inputs 16
Wet-contact input limits 30–300 VDC at 1.5 mA
Dry-contact ON resistance 1000 ohm maximum
Voltage input 60–120 V phase to neutral
Maximum continuous voltage input 273 V phase to neutral
Voltage input burden Less than 0.025 VA at 120 V
Source VT ratio 1–5000:1, steps of 1
Serial communication rate 300–19200 baud
Serial protocols Modbus RTU; DNP 3.0 Level 2
Operating ambient -20 to +60°C
Storage ambient -40 to +90°C
Humidity Up to 90% RH, non-condensing
Time-tagged event capacity 128 events
Waveform capture capacity 10 records, up to 32 power cycles
Harmonic metering Through the 21st harmonic
03

Description

The GE Multilin 745-W3-P5-G5-HI-A-L-R-E-H is configured for transformer protection with three windings per phase. Its phase and ground current inputs use a five-ampere rating, together with high-range control power. Analog interfaces, loss-of-life monitoring and restricted ground-fault protection are included in the specified option string. Percentage differential protection compares the transformer current paths while harmonic restraint helps secure operation during energization. The relay also supports transformer condition assessment and disturbance analysis. Match the winding arrangement and enabled protection settings to the transformer scheme before commissioning.

04

Three-Winding Differential Protection

Three winding-current sets→Differential and restraint logic→Transformer protection response
Percentage differential decision

Dual-slope restraint compares winding-current conditions to distinguish internal-fault operation from restrained conditions.

Energization security

Second-harmonic restraint and selectable fifth-harmonic inhibition reduce unwanted differential operation during inrush or overexcitation.

Restricted ground-fault option
The R option supports sensitive detection of low-magnitude ground faults in the applicable winding scheme.
05

Three-Winding Transformer Schemes

Power-transformer protection

Apply the configured winding arrangement to the matching transformer current-transformer circuits and differential scheme.

Autotransformer and reactor projects

The protection platform also supports suitable autotransformer and reactor applications subject to complete scheme engineering.

The A, L and R options identify analog I/O, loss-of-life and restricted-ground-fault functions. They must remain part of the complete configuration match.

06

Professional Team

Nearly 10 Years of Industry Experience

Our team members have an average of more than 10 years of industry experience. We have worked with customers worldwide, including those from India, Germany, Sweden, Italy, Russia, Venezuela, Israel, and many other countries. Throughout our careers, we have collectively completed over 3,000 orders and established long-term business relationships with customers across nearly 30 countries.

Professional Product Judgment

We can often identify a product’s manufacturer, series, configuration, and function from its model number or nameplate photo. We also understand how revisions, firmware, and specifications affect compatibility and whether an alternative model can be used safely.

In Practice: An Indian customer urgently needed a discontinued control module after several suppliers reported no stock. We identified its exact revision and function from the nameplate, checked compatible alternatives, and contacted factory and warehouse channels to locate matching inventory. After installation, the customer confirmed that the module operated correctly and later asked us to source additional spare parts.

Sincere and Patient Service

Our team treats every inquiry sincerely and answers every question patiently. Even for complex requests, we verify and respond to each detail instead of providing a rushed or uncertain answer.

In Practice: A German customer sent a mixed list of automation products and asked repeated questions about revisions, condition, photos, and delivery. Our team organized the requirements, checked every item, and replied point by point. The customer said our detailed communication made the purchasing decision easier and continued sending us new inquiries.

07

Transaction Cases

Sincere Cooperation, Long-Term Trust

Germany
Germany – A Germany customer urgently needed a replacement for a discontinued automation component. After reviewing the product label, technical parameters, and application details, our engineers recommended a compatible alternative and provided photos and test videos before shipment. The alternative performed well, enhancing the customer's confidence in our technical capabilities and leading to multiple repeat orders.
India

India – An Indian customer still had doubts after initial online communication with us, so they visited our company in person for a face-to-face meeting and product inspection. This visit increased the customer's trust and led to the successful placement of their first order. Over the next few years, we completed multiple orders and established a stable, long-term partnership.

Malaysia

Malaysia – A Malaysia customer needed a specific automation component and compared products and services from several suppliers online. After nearly three weeks of careful consideration, our sincere communication, professional service, and reliable product quality won the customer's trust. After receiving the product and using it for several weeks without any problems, the customer gave us positive feedback and subsequently placed multiple orders.

08

Product brand

►DCS System: Distributed Control System (DCS)◄
ABB | Invensys Foxboro | Invensys Triconex | Ovation | Woodword | HIMA | Yokogawa | Honeywell | Emerson
►PLC System: Programmable Logic Controller (PLC)◄
Rockwell Allen-Bradley | Schneider Modicon | GE Fnauc | Siemens | Prosoft | Bachmann | Woodhead
►TSI System◄
Bently Nevada | EPRO | ENTEK
09

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