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SIPROTEC-7UM85
Generator protection – SIPROTEC 7UM85
- Stock status:
- In stock
- Manufacturer:
- Siemens
- Product code:
- SIPROTEC-7UM85
Main documents
| 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-7UM85
The SIPROTEC-7UM85 is a highly modular and versatile generator protection relay designed for comprehensive protection and monitoring of generators and power plant units. It combines advanced technology with a wide range of functionalities to ensure reliable and efficient operation of power systems, even in challenging environments.
Key Features and Specifications
- Comprehensive Generator Protection: The SIPROTEC 7UM85 provides all essential protection functions for generators, including reverse power protection, underexcitation protection, and directional stator ground-fault protection. It supports a variety of generator connection types, such as busbar and unit connections.
Advanced Certification for Safety:
- Certified for Explosive Environments: The device is certified under EN 60079-14 and ATEX standards, making it suitable for use in explosive environments.
- SIL2 Certification: The hardware and software are SIL2 certified (EN 61508) for reverse power protection, ensuring high levels of safety and reliability.
Flexible Hardware Configuration:
- Supports up to 16 current transformers and 8 voltage transformers, along with 7 to 15 binary inputs and 9 to 20 binary outputs
- Includes 4 fast measuring transducer inputs (10 V or 20 mA) for accurate and rapid data collection
- The modular design allows for flexible I/O adjustment and expansion using 1/6 expansion modules, enabling customization for various application needs. It is available with large or small displays, or without a display.
- Compact Housing Options: The device is designed to fit housing widths ranging from 1/3 × 19 inches to 2 × 19 inches, making it suitable for different installation environments.
Applications:
1. Protection of Generators in Busbar Connection:
- Provides directional stator ground-fault protection for generators of various power levels.
2. Unit Connection for Larger Generators:
- Includes 100% stator ground fault protection (20 Hz) for enhanced safety and reliability in larger generators.
3. Power Plant Unit Protection:
- Capable of protecting both generators and transformers within a single protection group. It also integrates with other SIPROTEC 5 devices (such as 7UT8x, 7SJ82, 7SJ85, 7SA, SD, SL86) for more complex power plant configurations, including unit connections with generator circuit breakers and auxiliary transformers.
4. Protection of Synchronous Motors:
- Offers motor and generator protection functions, such as underexcitation protection, to safeguard synchronous motors.
5. Power Quality Monitoring:
- Supports the acquisition and recording of power quality data in medium voltage and low voltage networks, ensuring a comprehensive overview of system performance and stability.
Benefits:
- Powerful and Reliable Protection: With its advanced protection functions, the SIPROTEC 7UM85 ensures the **safe and reliable operation** of generators and power plant units across all voltage levels.
- Future-Ready Engineering: The device is compatible with the DIGSI 5 engineering tool, offering future-oriented solutions for protection, control, automation, and monitoring.
- Adaptability and Scalability: Its modular design and flexible I/O structure allow for seamless customization and scalability, making it suitable for a wide range of applications.
- Cybersecurity and Safety Compliance: Equipped with robust cybersecurity measures and safety certifications, ensuring protection against unauthorized access and compliance with industry standards.
The SIPROTEC-7UM85 stands out as a robust, flexible, and future-proof solution for generator protection, providing comprehensive features and adaptability to meet the evolving needs of power plants 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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