GE SR745-W2-P1-G1-HI-A-L-R-E Feeder protection relay

SR745-W2-P1-G1-HI-A-L-R-E

The GE SR745-W2-P1-G1-HI-A-L-R-E offers a wide range of protection functions. Its overvoltage protection safeguards transformers from high – voltage damage, while undervoltage protection ensures that low voltage does not disrupt equipment normal operation. Frequency protection keeps the transformer operating within the specified frequency range.

These comprehensive protection features cover various fault situations that transformers may encounter, significantly enhancing the safety and reliability of the transformer system.

Flexible Configuration

Thanks to FlexLogic™ technology, the relay can be easily configured according to specific system needs. Users can adjust protection settings and functional configurations to match different application requirements.

For instance, in a power plant with complex power distribution systems, the relay can be programmed to adapt to the unique characteristics of the transformers, providing optimized protection and control.

User – Friendly Interface

Equipped with an enhanced 40 – character display screen and an extended keyboard, the SR745-W2-P1-G1-HI-A-L-R-E improves input efficiency and readability.

Operators can conveniently set parameters, view fault information, and perform system debugging. This user – friendly design reduces the learning curve for new users and enables experienced technicians to work more efficiently.

Harsh Environment Adaptability

The “-HI” suffix indicates that this relay is designed to operate in harsh environmental conditions.

It can withstand extreme temperatures, humidity, and other challenging factors, making it suitable for installation in various industrial settings, including outdoor substations and plants with high – humidity environments.

Battery Power – on Function

This relay supports battery power – on, ensuring continuous operation even during power outages.

This feature is crucial for applications where uninterrupted monitoring and protection of transformers are essential, such as in critical power distribution systems for hospitals or data centers.

This relay offers a comprehensive suite of protection functions. It provides overcurrent, overvoltage, undervoltage, differential, and frequency protection.

For example, its differential protection can effectively detect internal faults in transformers, such as inter – turn short circuits, while overcurrent protection prevents equipment damage caused by excessive current.

The SR745-W2-P1-G1-HI-A-L-R-E also monitors physical and electronic variables like temperature, harmonics, and over – excitation of transformers.

By continuously assessing these parameters, it can take preventive actions to avoid transformer overload or damage. Leveraging FlexLogic™ technology, it combines set – point capabilities to create a flexible programming structure.

This adaptability allows it to meet the specific protection requirements and system configurations of diverse applications, whether in large – scale power generation plants or small – to – medium – sized industrial facilities.

Technical Specifications

Parameter Name    Parameter Value

Product Model    SR745-W2-P1-G1-HI-A-L-R-E

Manufacturer    GE

Product Type    Transformer Management Relay

Rated Voltage    5 kV

Rated Current    2 A

Analog Output High Load    10 kΩ, 0 to 1 mA; 600 Ω, 4 to 20 mA

Operating Temperature Range    – 40 °C to 70 °C

Communication Protocols    Optional Ethernet port for communication

Input/Output Configuration    Four isolated 4 – 20 mA analog inputs and outputs; seven assignable digital inputs

Size    21.6 cm x 22.4 cm x 25.2 cm

Weight    10 kg

Mounting Type    Standard 19 – inch panel mount

Power Supply    LO control power: 20 – 50 VDC, 48 – 72 VAC at 20 – 68 Hz; high control power supply: 90 – 300 VDC and 70 – 265 VAC

Display    40 – character display with multiple status LEDs and input buttons