GE SR745-W2-P5-G5-HI-A Transformer protection system line

GE SR745-W2-P5-G5-HI-A Transformer protection system line

About The SR745-W2-P5-G5-HI-A 

The 745-W2-P5-G5-HI-AR is part of General Electric’s 745 Transformer protection system line. This series is designed to offer high-speed transformer management relays built with multi-processors delivering two or three winding transformer management.  Units in this series can be used for the management and protection of power transformers of various sizes.  

The 745-W2-P5-G5-HI-AR and other units within the series offer overexcitation protection elements with overcurrent and percent differential capabilities, and are capable of monitoring both individual harmonics as well as THD (total harmonic distortion.) 

Technical Specifications

Tap Position Range：0 to 500 Ω or 0.5 to 5.0 kΩ

Software Version：EnerVista 745

Ambient Storage Temperature：-40°C (-40°F) to +80°C (176°F)

Operating Temperature：-40°C (-40°F) to +60°C (140°F)

Operating Environment Humidity：up to 90% non-condensing

Frequency：50 or 60 Hz nominal

Control Power Range：90 to 300 V DC; 70 to 265 V AC at 48 to 62 Hz 

Product Features

Multi-functional protection: as a transformer protection system, SR745-W2-P5-G5-HI-A is able to provide comprehensive protection functions, including but not limited to overload protection, short-circuit protection, over-current protection, etc., ensuring the safe operation of the transformer under various working conditions.

High reliability: the use of advanced electronic technology and reliable mechanical structure, to ensure that the product can still work stably under high loads and harsh environments.

Easy maintenance: the product design takes into account the convenience of maintenance, such as the optical components do not contact with water, reducing the workload of cleaning and maintenance.

Wide applicability: it is suitable for large, medium and small transformer systems, and meets the protection needs of power systems of different scales.

Technical indicators

Rated voltage: 380V±10%, 3-phase 4-wire

Ambient temperature: -25℃~50

Relative humidity: <95%

Altitude: <2000m

Total compensation capacity: 24~300Kvar

Applicable transformer capacity: 80~1000KVA

Application Scenario

GE SR745-W2-P5-G5-HI-A transformer protection system is widely used in electric power, energy, industrial manufacturing and other fields, especially in the need for high reliability and stability of power supply occasions, such as metallurgy, oil and gas, petrochemical, chemical industry, papermaking and printing, textile printing and dyeing, machinery, electronics manufacturing, automobile manufacturing and other industries.

Connection and Configuration

Connection: The product has multiple ports to support inbound and outbound connections, including RS422/485 ports for continuous monitoring of multiple relays. There is also an RS232 port that allows users to connect to a computer running the EnerVista 745 for quick and easy configuration.

Configuration Software: The EnerVista 745 software program allows the user to set and modify setpoints, read values and status of the system, perform waveform capture and digitise data, and get help on a variety of topics. The programme also includes a quick connect feature that seamlessly connects a computer running EnerVista to the SR745-W2-P5-G5-HI-A.