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SIPROTEC-7UT82
Transformer differential protection – SIPROTEC 7UT82
- Stock status:
- In stock
- Manufacturer:
- Siemens
- Product code:
- SIPROTEC-7UT82
Main documents
Related products
| Hardware | |
| transformers | 4 current transformers |
| voltage | 0 / 3 voltage transformers |
| Product family | mv digital protection relays power analyzersOther |
| binary inputs | 3 / 7 binary inputs (thresholds configurable using software) |
| Product | |
| binary outputs | 5 / 8 binary outputs (2 changeover) |
| life contact | 1 life contact |
| Pluggable | Pluggable current and voltage terminals. |
| time-overcurrent | Directional time-overcurrent protection, ground (67N) |
| Trip-circuit | Trip-circuit supervision (74TC) |
| Additional Product Information | |
| Forward-power | Forward-power, reverse-power protection (32) |
| Rate-of-voltage | Rate-of-voltage-change protection (27R/59R) |
| Rate-of-frequency | Rate-of-frequency-change protection (81R) |
| programmable | 9 programmable function keys |
| Secondary current transformer values | Secondary current transformer values (1 A / 5 A) settable using DIGSI |
| Binary input | Binary input thresholds settable using DIGSI (3 stages) |
| Pluggable | Pluggable current and voltage terminals |
| frequency | Rate-of-frequency-change protection (81R) |
| voltage | Rate-of-voltage-change protection (27R/59R) |
| reclosing | Automatic reclosing (79) |
| Voltage dependent | Voltage dependent inverse-time overcurrent protection (51V) |
| Directional | Directional intermittent ground fault protection (67Ns) |
Product Description
Siemens
Siemens, a global leader in the electrical and industrial automation sectors, is renowned for its high-quality products and solutions, ranging from electrical equipment and automation systems to energy management and telecommunications technologies.
With a strong focus on innovation, Siemens provides cutting-edge solutions that enhance operational efficiency, sustainability, and productivity across various industries. From advanced circuit breakers and switchgear to smart grid solutions, Siemens continues to shape the future of technology, delivering reliable and energy-efficient products that meet the evolving needs of businesses and industries worldwide.
Reyrolle Siemens protection relays are designed for reliable and efficient safeguarding of electrical distribution systems. Known for their precision, durability, and advanced technology, these relays ensure the highest standards of safety and protection in industrial and commercial applications.
SIPROTEC-7UT82
The SIPROTEC-7UT82 is a specialized differential protection relay designed specifically for the protection of two-winding transformers. It combines advanced protection features with modular expandability, offering a comprehensive solution for safeguarding transformers and related equipment in various electrical systems.
Key Features and Specifications
- The SIPROTEC-7UT82 serves as the main protection for two-winding transformers, providing robust differential protection with additional stabilization to ensure reliable operation.
- It supports up to 2 restricted ground-fault protection functions, enhancing security for the transformer and connected equipment.
Versatile Application:
- In addition to transformer protection, the relay includes various backup protection functions that can be utilized for cables, lines, and shunt reactors, providing a versatile protection solution.
Modular and Flexible Design:
- The device’s modular structure allows for easy customization and integration into different systems. This flexibility is complemented by the powerful DIGSI 5 engineering tool, which provides future-oriented solutions for protection, control, automation, monitoring, and power quality (PQ) basics.
Efficient Measuring Points:
The SIPROTEC 7UT82 is equipped with:
- 2 three-phase current measuring points for comprehensive monitoring.
- 2 one-phase current measuring points to cover additional requirements.
Inputs and Outputs:
The standard variant includes:
- 8 current transformers for accurate current measurement.
- 7 binary inputs and 7 binary outputs for versatile control and monitoring capabilities.
Compact and User-Friendly Hardware:
- 1/3 base module with IO103, providing a compact yet powerful solution
- Available with both large and small displays for different user preferences.
- The housing width is 1/3 × 19 inches, making it suitable for various installation environments.
Benefits:
Reliable and Stable Protection:
- The differential protection functions of the SIPROTEC 7UT82 ensure **fast and precise fault detection** within transformers, minimizing the risk of damage and downtime.
Backup Protection Flexibility:
- With its integrated backup protection features, the device can protect not only transformers but also other equipment, such as **cables, lines, and shunt reactors**, providing a **multi-functional solution.
Easy Integration and Customization:
- The modular hardware and compatibility with DIGSI 5 allow for easy integration into existing systems and future expansion, ensuring long-term usability and adaptability.
Optimized for Modern Electrical Systems:
- The SIPROTEC-7UT82 supports automation and monitoring solutions, making it ideal for use in smart grid applications and other modern electrical infrastructures.
The SIPROTEC-7UT82 stands out as a reliable and flexible relay for transformer differential protection, offering advanced features, modular design, and robust performance. It is well-suited for ensuring the safety and efficiency of two-winding transformers in a variety of electrical systems, making it an essential component for power generation, transmission, and industrial applications.
Frequently Asked Questions
What is SIPROTEC 4?
✅ SIPROTEC 4 represents Siemens' benchmark in digital protection technology, offering reliable solutions for diverse industrial and energy applications. It remains a trusted choice for safeguarding electrical systems with precision and efficiency.
What is Reyrolle?
✅ Reyrolle, originally a British engineering company, revolutionized the power industry by manufacturing innovative switchgear for power stations worldwide. Today, Siemens continues its legacy through the Reyrolle product range, which provides robust and reliable protection relays for modern energy systems.
What is the function of a digital relay?
✅ A digital relay, like Siemens SIPROTEC models, uses advanced microprocessors to analyze power system voltages, currents, and other parameters. These relays detect faults in electrical systems or industrial processes, ensuring efficient protection and control.
What are the disadvantages of a digital relay?
✅ Digital relays, despite their precision and versatility, have some drawbacks. These include susceptibility to electromagnetic interference, higher power consumption, and the need for regular maintenance to avoid contact wear. However, SIPROTEC relays are engineered to mitigate many of these issues, ensuring superior performance and reliability.
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