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

Description

Detailed Parameter Table

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

Product Introduction

GE’s SR745-W2-P1-G1-HI-A-L-R-E is an advanced and highly sophisticated transformer protection relay. It is engineered to offer comprehensive protection and monitoring capabilities for power transformers, auto transformers, and reactors. In the complex and critical world of power distribution and industrial power systems, the reliable operation of transformers is of utmost importance. This relay serves as a crucial safeguard, constantly vigilant to protect transformers from a wide array of potential threats and ensuring their smooth and efficient operation.

By integrating adaptive features, the SR745-W2-P1-G1-HI-A-L-R-E can respond in real – time to various system events. This adaptability not only helps in extending the lifespan of transformers but also significantly minimizes operational downtime, which is crucial for maintaining the integrity of power supply in industries and utility grids.

Core Advantages and Technical Highlights

Advanced Protection Features: The overexcitation protection function of the SR745-W2-P1-G1-HI-A-L-R-E is designed to shield transformers from overexcitation conditions. These conditions can be extremely detrimental to transformer windings, potentially leading to costly damage. By continuously monitoring and taking prompt action when overexcitation is detected, the relay helps prevent such catastrophic failures. Similarly, the overload protection feature safeguards transformers against excessive loads, which can cause overheating and ultimately damage the transformer.

Accurate Monitoring and Metering: With its dynamic CT ratio mismatch correction, the relay automatically adjusts for CT ratio mismatches. This ensures that the protection and metering functions remain highly accurate. In power systems, accurate measurement of electrical parameters is essential for proper operation and control. The ability to detect rapid frequency changes through its frequency rate – of – change detection mechanism allows the relay to quickly identify system disturbances or faults. Additionally, the total harmonic distortion (THD) monitoring helps in identifying potential power quality issues, which can affect the performance of not only the transformer but also other connected equipment.

Reliable Connectivity: The support for multiple communication protocols such as RS – 232, Ethernet, and DNP3 enables the SR745-W2-P1-G1-HI-A-L-R-E to be easily integrated into existing power system infrastructure. This seamless connectivity allows for real – time data transfer and remote monitoring and control. For example, in a large – scale power distribution network, operators can monitor the status of transformers from a central control room, receive alerts in case of any 异常情况，and even remotely adjust certain parameters if required.

Robust Design: The operating temperature range of – 40 °C to + 85 °C makes the relay suitable for deployment in diverse and extreme environmental conditions. Whether it’s in a cold substation in a remote area or a hot and humid industrial plant, the SR745-W2-P1-G1-HI-A-L-R-E can continue to function reliably. The conformal coating on the relay further enhances its durability by protecting it from dust, moisture, and other environmental contaminants. The enhanced LCD display and expanded keypad make it user – friendly, facilitating easy operation and access to important information.

Typical Application Scenarios

Power Generation Plants: In power generation plants, transformers play a vital role in stepping up the generated voltage for efficient transmission over long distances. The SR745-W2-P1-G1-HI-A-L-R-E is used to protect these large – capacity transformers. It monitors the electrical parameters of the transformers, such as the high – voltage side current and voltage. In case of any abnormal conditions like a sudden overload due to a large – scale equipment startup or a fault in the generation process, the relay quickly activates the appropriate protection mechanisms. This ensures that the transformer is protected and the power generation process can continue without major disruptions.

Industrial Manufacturing Facilities: Many industrial manufacturing facilities rely on large – power transformers to supply the necessary electrical power for their operations. For example, in a steel mill, where there are high – power electric arc furnaces and other energy – intensive equipment, the SR745-W2-P1-G1-HI-A-L-R-E is installed to protect the transformers. It helps in maintaining a stable power supply by protecting against faults and ensuring that the transformers operate within their optimal parameters. This is crucial for preventing production stoppages, which can be extremely costly in terms of lost productivity and revenue.

Utility Power Distribution Grids: In utility power distribution grids, transformers are used at various levels to step down the voltage for end – user consumption. The SR745-W2-P1-G1-HI-A-L-R-E is deployed to protect these distribution transformers. It monitors the power quality, detects any faults or abnormal conditions, and takes corrective actions. For instance, if there is a lightning strike in the area, the lightning protection function of the relay kicks in to protect the transformer from the high – voltage surges associated with lightning. This helps in maintaining the reliability of the power supply to residential and commercial customers.

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

Related Model Recommendations

SR745-W2-P5-G1-HI-A: This model is also a transformer protection relay from GE. It may have some differences in terms of the level of protection functions or the capacity it can handle. For example, it might offer more advanced protection algorithms for specific types of transformers or a higher accuracy level in certain applications. It could be a suitable alternative for applications where the SR745-W2-P1-G1-HI-A-L-R-E might not fully meet the specific requirements, such as in a very high – voltage and high – capacity transformer installation.

GE Multilin 764: Part of the 750/764 feeder management relay series, although not a direct replacement for the SR745-W2-P1-G1-HI-A-L-R-E, it can be used in conjunction in some power system setups. The 764 relay is designed for feeder protection in industrial and distribution utility feeder applications. In a complex power system where there are both transformers and feeders that need to be protected and monitored, the SR745-W2-P1-G1-HI-A-L-R-E can focus on transformer protection, while the 764 can handle feeder – related protection and monitoring tasks.

Installation, Commissioning and Maintenance Instructions

Installation Preparation: Before installation, carefully check the physical dimensions of the SR745-W2-P1-G1-HI-A-L-R-E and ensure that it fits properly in the designated location, which is usually in a control panel near the transformer. Verify that the environmental conditions at the installation site, such as temperature and humidity, are within the specified operating range of the relay. Use appropriate wiring materials that are suitable for the electrical ratings and environmental conditions. Ensure that the grounding of the relay is done correctly as per GE’s installation guidelines to prevent electrical interference and ensure safety.

Maintenance Suggestions: Regularly inspect the relay for any signs of physical damage, such as cracks in the casing or loose connections. Clean the relay periodically, especially if it is installed in a dusty environment, using a soft brush or compressed air. Check the communication connections to ensure that data is being transmitted correctly. Monitor the operating parameters of the relay, such as the accuracy of the protection and metering functions, using appropriate testing equipment. In case of any faults, refer to the detailed error codes provided in the product manual. Replace any faulty components with genuine GE replacement parts to maintain the performance and reliability of the relay.

Commissioning Process: After installation, power on the SR745-W2-P1-G1-HI-A-L-R-E and perform a series of initial checks. Configure the relay according to the specific requirements of the transformer it is protecting, such as setting the appropriate protection thresholds for overexcitation, overload, etc. Test the communication protocols by sending and receiving test data to ensure that the relay can communicate effectively with other devices in the power system. Conduct simulated fault tests to verify that the protection functions of the relay are working correctly. Calibrate the relay if necessary to ensure accurate measurement of electrical parameters.

Service and Guarantee Commitment

GE typically offers a standard warranty for the SR745-W2-P1-G1-HI-A-L-R-E, which usually covers manufacturing defects and performance issues for a certain period, often around 12 months. Their global technical support team is available to provide assistance. They can offer remote troubleshooting services, helping customers to identify and resolve issues without the need for on – site visits in many cases. GE also provides software updates for the relay, which can improve its performance, add new features, or fix any known bugs. For more complex problems or in – depth maintenance requirements, GE can dispatch trained technicians to the site. Additionally, customers may have the option to purchase extended warranty plans, which can provide long – term protection for their investment in the relay. This comprehensive service and guarantee commitment by GE reflect their confidence in the quality and reliability of the SR745-W2-P1-G1-HI-A-L-R-E and their dedication to customer satisfaction in the power protection market.