Description
Product Overview
The GE SR745 – W2 – P1 – G1 – HI – A – L – R is a high – performance transformer management relay, an integral part of GE Multilin’s 745 series. This series is renowned for its advanced technology in power system protection and control. The SR745 – W2 – P1 – G1 – HI – A – L – R is designed to offer comprehensive protection and management functions for transformers across various power systems.
At its core, this relay provides primary and back – up protection for transformers. It utilizes multiple current and voltage inputs to detect and respond to a wide range of faults. These include differential, ground differential phase, neutral, and ground overcurrent, over – fluxing, and on – load tap changer issues. By doing so, it ensures the safe and efficient operation of transformers, minimizing the risk of damage and downtime. In the industrial automation system, the GE SR745 – W2 – P1 – G1 – HI – A – L – R is positioned as a reliable and intelligent solution. It helps in optimizing power distribution, protecting valuable transformer assets, and contributing to the overall stability of the power infrastructure.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | SR745 – W2 – P1 – G1 – HI – A – L – R |
| Manufacturer | GE |
| Product Type | Transformer Management Relay |
| Rated Voltage | [Specify, e.g., 5 kV (check exact value)] |
| Rated Current | [Specify, e.g., 2 A (check exact value)] |
| Analog Output High Load | 10 kΩ, 0 – 1 mA; 600 Ω, 4 – 20 mA |
| Weight | 4.8 kg |
| Operating Temperature | – 40 °F to + 140 °F |
| Humidity | Up to 90% non – condensing |
| Altitude | Up to 2000 m |
| Chassis | 745 SR series |
| Solid State Output Maximum Ratings | Make and carry 15 A at 250 V DC for 500 ms |
| Overload Withstand | 1 second at 80 times rated current, continuous at 3 times rated current |
| Communication Protocols | Modbus, DNP 3.0 level 2 (through embedded Ethernet, standard RS 232, RS485 & RS422 serial ports) |
| Insulation Voltage | 300 V |
| Pollution Degree | II |
| IP Code | IP 40 / IP 20 |
| Control Power Range | 90 – 300 VDC, 70 – 265 VAC @ 40VA 48 – 62 Hz |
SR745-W2-P1-G1-HI-A-L-R
Main Features and Advantages
Comprehensive Protection Capabilities
The GE SR745 – W2 – P1 – G1 – HI – A – L – R offers an extensive array of protection functions. It can safeguard transformers from overcurrent, overvoltage, undervoltage, differential, and frequency – related issues. This comprehensive protection ensures that the transformer is shielded against various potential faults, reducing the likelihood of equipment failure and power outages. For example, its differential protection feature can quickly detect internal faults in the transformer, such as winding short – circuits, and take prompt action to isolate the problem.
FlexLogic™ Technology for Customization
Equipped with FlexLogic™ technology, this relay allows for highly flexible programming. It can be tailored to meet the specific requirements of different power systems. By combining this technology with its set – point functionality, users can create customized programming structures. This means that whether it’s a small – scale industrial power setup or a large – scale utility grid, the SR745 – W2 – P1 – G1 – HI – A – L – R can be configured to provide optimal protection and management.
Enhanced Display and Operability
Featuring an enhanced 40 – character display screen and an extended keyboard, the relay offers improved operability. This makes it easier for operators to input set values, view real – time status information, and access diagnostic data. The clear display and user – friendly interface reduce the chances of human error during operation and maintenance, ultimately saving time and effort.
Robust Construction and Environmental Adaptability
Housed in the 745 SR series chassis, the GE SR745 – W2 – P1 – G1 – HI – A – L – R is well – protected against dust and other environmental factors. It can operate in a wide temperature range from – 40 °F to + 140 °F and withstand humidity up to 90% non – condensing and altitudes of up to 2000 m. This robust construction and environmental adaptability make it suitable for use in diverse industrial and outdoor applications.
Application Field
The GE SR745 – W2 – P1 – G1 – HI – A – L – R finds extensive applications in power – intensive industries. In power generation plants, it is crucial for protecting and managing the transformers that step – up or step – down voltage levels for efficient power transmission. It monitors the transformers’ health, ensuring they operate within safe parameters and providing early warnings in case of potential issues.
In industrial settings such as large – scale manufacturing plants, especially those in the cement, petroleum, mining, steel, and shipbuilding sectors, reliable power supply is essential. The SR745 – W2 – P1 – G1 – HI – A – L – R protects the transformers that power the manufacturing equipment. It helps in preventing disruptions in the production process caused by transformer failures, thus maintaining high productivity levels.
Commercial and industrial distribution systems also rely on this relay. It ensures the stable operation of transformers that distribute power to different buildings and facilities. By protecting these transformers, it helps in maintaining a consistent power supply to various electrical loads, from office equipment to industrial machinery.
SR745-W2-P1-G1-HI-A-L-R
Related Products
- GE SR745 – W2 – P1 – G1 – LO – E: It is a transformer protection system in the same series. The main difference lies in the display option, as the “E” in this model indicates an enhanced display option with a larger LCD, providing different visual feedback and user – interaction possibilities compared to the SR745 – W2 – P1 – G1 – HI – A – L – R.
- GE 469 – P5 – HI – A20 – E – H: This is a motor protection relay. While the SR745 – W2 – P1 – G1 – HI – A – L – R focuses on transformer protection, the 469 series is designed specifically for safeguarding motors. However, they both belong to GE Multilin’s product range for power system protection and control.
- GE 735: A feeder protection relay. Unlike the SR745 – W2 – P1 – G1 – HI – A – L – R which is for transformers, the 735 is tailored to protect feeder lines. But they can work in tandem in a power system, with each protecting different critical components.
- GE COM0011: A communication – related product. It can be used in combination with the SR745 – W2 – P1 – G1 – HI – A – L – R to enable seamless communication between the relay and other devices in the power system network, facilitating data transfer and remote monitoring.
- GE 845 Relay: As the manufacturing of the 745 series (including SR745 – W2 – P1 – G1 – HI – A – L – R) has been discontinued, the 845 relay is an alternative. It likely offers similar or enhanced features for transformer protection and management, making it a suitable replacement option for new installations or upgrades.
Installation and Maintenance
Pre – installation preparation: Before installing the GE SR745 – W2 – P1 – G1 – HI – A – L – R, ensure the installation site meets the specified environmental conditions, such as temperature and humidity ranges. Check the power supply to confirm it falls within the relay’s control power range. If using a 19 – inch panel for installation, make sure the panel is in good condition and properly sized. Also, handle the relay with care to avoid electrostatic discharge that could damage its sensitive components.
Maintenance recommendations: Regularly inspect the SR745 – W2 – P1 – G1 – HI – A – L – R for any signs of physical damage, such as cracks in the chassis or loose connections. Monitor the input and output signals to ensure they are within the expected range. Periodically clean the relay to remove dust, as excessive dust can affect its performance. Keep the firmware updated to the latest version provided by GE to benefit from the latest features and security enhancements. In case of any malfunction, refer to the product manual’s troubleshooting section or contact GE’s technical support for assistance.
Product Guarantee
GE stands firmly behind the quality of the GE SR745 – W2 – P1 – G1 – HI – A – L – R. Through strict quality control during manufacturing, GE ensures that each relay meets the highest industry standards. The product typically comes with a standard warranty period, during which any manufacturing defects will be rectified free of charge. GE’s global network of technical support teams is available to assist customers. Whether it’s help with installation, troubleshooting, or general product – related queries, customers can rely on GE’s expertise. This guarantee reflects GE’s confidence in the product and their commitment to providing reliable and long – lasting transformer management solutions.
