SR745-W3-P5-G5-HI GE Transformer Protection System

Product Overview

SR745-W3-P5-G5-HI is a microprocessor relay protection system provided by GE,designed specifically for the protection of small and medium-sized power transformers.The system is powerful,flexible,and cost-effective,providing comprehensive transformer protection solutions.

Product features

Multiple protection functions:overcurrent,overvoltage,differential,zero sequence harmonics,excitation inrush current,Buchholz relay,temperature,etc

Flexible configuration options:You can choose the required protection functions based on specific applications

Easy to use:intuitive menu interface and easy to understand operating instructions

High reliability:using validated hardware and software design

High cost-effectiveness:powerful and cost-effective

Product parameters

Rated voltage:5kV to 69kV

Rated current:100A to 5000A

Protection functions:overcurrent,overvoltage,differential,zero sequence harmonics,excitation inrush current,Buchholz relay,temperature,etc

Communication interface:RS232,RS485,Ethernet

External dimensions:19 inch rack mounted

Product specifications

Relay type:microprocessor relay

Accuracy:0.5%

Response time:<20 ms

Setting range:adjustable

Series

The SR745 transformer protection system series includes the following models:

SR745-W1:Basic model,providing overcurrent and overvoltage protection

SR745-W2:Enhanced model,providing differential and zero sequence harmonic protection

SR745-W3:Advanced model,providing excitation inrush current and Buchholz relay protection

SR745-W5:Professional model,providing temperature protection

Function

The SR745-W3-P5-G5-HI transformer protection system provides the following functions:

Overcurrent protection:can prevent transformer damage due to overload or fault current

Overvoltage protection:can prevent transformer damage due to lightning strikes or other transient overvoltages

Differential protection:can detect and protect transformers from internal faults

Zero sequence harmonic protection:can protect transformers from damage caused by zero sequence harmonics

Excitation surge protection:can prevent transformer damage caused by excitation surge during power on

Buchholz relay protection:can detect internal faults in transformers,such as leakage or overheating

Temperature protection:can prevent transformer damage due to overheating

Purpose

The SR745-W3-P5-G5-HI transformer protection system is suitable for the following applications:

Small and medium-sized power transformers

Distribution transformers for industrial and commercial facilities

Transformers for wind and solar power generation applications

Application field

The SR745-W3-P5-G5-HI transformer protection system is widely used in the following fields:

Electric Power Company

Industrial and manufacturing industries

Oil and natural gas

Renewable energy