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SIPROTEC 6MD85
Power quality recorder – SICAM Q200
- Stock status:
- In stock
- Manufacturer:
- Siemens
- Product code:
- SIPROTEC 6MD85
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 6MD85
The SIPROTEC 6MD85 is a versatile modular bay controller designed for medium to extra-high voltage switchgear applications. It integrates control, automation, and protection functions, making it a comprehensive solution for modern power systems. As part of the SIPROTEC 5 family, it ensures robust operation, flexibility, and easy configuration via DIGSI 5 software.
Key Features and Specifications:
Comprehensive Control and Protection:
- The SIPROTEC 6MD85 functions as a general-purpose control and automation device that can also handle protection functions.
- Suitable for use across all voltage levels, from distribution to transmission, ensuring broad applicability in various electrical systems.
- Allows integration of multiple protection functions from the SIPROTEC library, enabling customized configurations.
Modular Hardware Design:
- The device features modular hardware, which allows for application-specific inputs and outputs (I/Os). This adaptability helps tailor the hardware to precise requirements.
- The modularity supports future-oriented solutions for protection, control, automation, monitoring, and basic power quality (PQ) functions.
- I/O Flexibility: SIPROTEC 6MD85 offers a scalable structure, allowing users to expand the device. For example, additional 240 binary inputs can be integrated with the IO230 module.
- Available in different housing widths, from 1/3 × 19″ to 2/1 × 19″, to suit different installation requirements.
Inputs and Outputs:
Standard variants include:
- 4 current transformers and 4 voltage transformers.
- 11 to 75 binary inputs and 9 to 41 binary outputs.
- Predefined standard variants are delivered with instrument transformers, and protection-class current transformers are also available to utilize protection functions.
Application Templates:
- DIGSI 5 software provides various application templates for standard configurations, making the setup process straightforward
- Templates include basic configurations and default settings for different use cases.
Examples of templates:
- Standard setup: Basic configuration for general use.
- Double-busbar feeder with switchgear interlocking: Preconfigured for systems with double busbars, ensuring reliable operation.
- Extended control: Includes CFC blocks for switching sequences and arithmetic operations, allowing more complex automation scenarios.
- Switching sequences for automatic busbar transfer: Preconfigured to start with a function key, ensuring efficient switching between busbars.
Future-Ready and Flexible Solutions:
- The device’s flexibility makes it ideal for overhead line and cable protection, supporting both single-ended and multi-ended infeed systems.
- With protection communication capability, it allows selective and precise protection across the network.
- Power quality data acquisition and recording are supported, making it suitable for medium-voltage and lower voltage networks.
Applications:
- The SIPROTEC 6MD85 is designed to be a comprehensive bay controller for use in switchgear across various voltage levels. Its modular and flexible design makes it ideal for:
- Overhead lines and cable systems with single or dual infeed configurations.
- Medium-voltage to extra-high voltage systems, ensuring reliable control and protection across the network.
- Automation tasks requiring integration of complex switching sequences, including automatic busbar transfer.
Conclusion:
The Siemens SIPROTEC 6MD85 offers a future-oriented solution for control, automation, and protection in power systems. Its modular hardware, extensive protection functions, and easy configuration with DIGSI 5 make it a versatile tool for maintaining power system reliability and ensuring efficient switchgear operation.
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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