The GE 745-W2-P5-G5-HI-R-E-H is a transformer management relay designed to provide advanced protection, monitoring, and control for power transformers. It integrates differential protection, fault detection, and real-time condition monitoring to extend transformer lifespan and maintain operational stability.

This relay operates as the central protection unit within transformer protection schemes. Installed in substation control panels or switchgear, it continuously monitors electrical parameters, executes protection algorithms, and issues trip commands when abnormal conditions are detected, ensuring system safety and reliability.

- Implements multi-function transformer protection including differential, overcurrent, and overexcitation control
- Maintains stable operation through adaptive protection algorithms under varying load conditions
- Supports continuous monitoring of electrical and thermal parameters for asset management
- Provides strong system compatibility with substation automation and SCADA integration
- Enhances disturbance immunity with industrial-grade isolation and filtering design
- Improves lifecycle maintenance through diagnostic data, event recording, and condition tracking

Application Areas / Typical Use Cases

Power transmission and distribution substations
Protection of medium and large power transformers
Industrial power systems and energy facilities
Grid infrastructure monitoring and control
Retrofit and upgrade of legacy transformer protection systems

Parameter	Specification
Transformer Configuration	Two windings per phase
Phase Current Input Rating	5 A nominal per winding
Ground Current Input	5 A nominal
Control Power Supply	90–300 VDC / 70–265 VAC
Frequency Range	50 / 60 Hz
Digital Inputs	16 programmable inputs
Analog Output Channels	7 configurable outputs (0–20 mA / 4–20 mA)
Communication Interfaces	RS232 (front), RS485 / RS422 (rear), optional Ethernet
Operating Temperature	–40 °C to +60 °C
Storage Temperature	–40 °C to +80 °C
Humidity	Up to 90% non-condensing
Mounting	Panel-mounted relay unit
Display	Enhanced LCD interface

For pricing, availability, or technical consultation regarding this model, please contact our sales team:

【Sales Manager】

Silver

【WhatsApp】

+86-18020714492

【Email】

sales1@askplc.com

【WeChat】

+86-18020714492

Q1: What type of transformer does this relay support?
It is designed for two-winding transformers across industrial and utility applications.

Q2: What protection functions are included?
It provides differential protection, overcurrent, over/underfrequency, and restricted ground fault protection.

Q3: What communication options are available?
It supports RS232, RS485/RS422, and optional Ethernet connectivity for system integration.

Q4: What is the control power requirement?
It operates with a wide-range input of 90–300 VDC or 70–265 VAC.

Q5: Is it suitable for harsh industrial environments?
Yes, it is designed for operation from –40 °C to +60 °C with high humidity tolerance.

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