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SIPROTEC-7SJ80
Overcurrent protection – SIPROTEC 7SJ80
- Stock status:
- In stock
- Manufacturer:
- Siemens
- Product code:
- SIPROTEC-7SJ80
Main documents
| Hardware | |
| transformers | 4 current transformers |
| Product Description | The SIPROTEC 7SJ80 relays can be used for feeder protection of high and medium-voltage networks with grounded, low-resistance grounded, isolated or a compensated neutral point. The relays have all the required functions to be applied as a backup relay to a transformer differential relay. |
| Product family | mv digital protection relays power analyzersOther |
| binary inputs | 3/7/11 binary inputs (thresholds configurable using software) |
| Product | |
| binary outputs | 5/8 binary outputs (2 changeover / form C contacts) |
| life contact | 1 life contact |
| Pluggable | Pluggable current and voltage terminals.Show prices |
| Inrush restraint | Inrush restraint |
| Trip-circuit | Trip-circuit supervision (74TC) |
| Additional Product Information | |
| Display | 6-line display |
| USB | USB front port |
| Ports | 2 additional communication ports |
| 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-7SJ80
The SIPROTEC-7SJ80 is a versatile relay designed for feeder protection in high and medium-voltage networks. It supports various grounding systems, including grounded, low-resistance grounded, isolated, or compensated neutral points. Additionally, it serves as an effective backup relay to transformer differential relays, ensuring robust protection across power systems.
Key Features and Specifications:
- Flexible Protection Functions: The SIPROTEC 7SJ80 allows users to create up to 20 additional protection functions, enabling specialized applications such as frequency change protection or reverse power protection.
- Integrated Control and Automation: It supports circuit breaker control and other switching devices. The relay includes automation functions, which can be customized through the programmable logic (CFC) feature. This allows for creating specific functions, such as switchgear automation and interlocking.
- User-Defined Messaging: Users can generate customized messages, improving monitoring and communication within the system.
Hardware Specifications:
- Current Transformers: Equipped with 4 current transformers.
- Voltage Transformers: Supports 0 or 3 voltage transformers.
- Binary Inputs: Configurable with 3, 7, or 11 binary inputs, adjustable through software for specific operational thresholds.
- Binary Outputs: Available with 5 or 8 binary outputs, including 2 changeover (form C) contacts**.
- Life Contact: Includes a dedicated life contact for system status monitoring.
- Pluggable Terminals: Features pluggable current and voltage terminals for easy installation and maintenance.
The SIPROTEC-7SJ80 relay is designed to be highly adaptable, making it suitable for diverse protection schemes and applications. Its advanced features and flexibility enable users to tailor the relay for specific needs, enhancing the overall efficiency and safety of power networks.
Frequently Asked Questions
Which is Better: Schneider or Siemens Circuit Breakers?
When comparing Schneider and Siemens circuit breakers, both brands offer unique strengths and advantages, making them top choices in the industry.
✅ Both Schneider and Siemens circuit breakers are excellent choices for protecting electrical systems. Schneider excels in versatility and precision engineering, while Siemens is known for its exceptional build quality and innovation. The choice between the two depends on specific needs and preferences, ensuring reliable protection and performance for any electrical system.
What are the three types of miniature circuit breaker?
✅Miniature Circuit Breakers (MCBs) are essential for protecting electrical circuits from overcurrents and short circuits. There are three primary types of MCBs: Type B, Type C, and Type D. Each type is designed to respond to different levels of electrical surges in various settings.ft starters minimize the initial surge of power during startup by gradually increasing the voltage supply. This controlled power-up process prevents the motor from overheating, reducing the risk of temporary shutdowns and significantly extending the lifespan and durability of the motors.
What's the difference between type B and C MCBs?
✅Type B devices are engineered to trip when fault currents reach 3-5 times the rated current (In). For instance, a 10A Type B device will trip at 30-50A. Type C devices, on the other hand, are designed to trip at fault currents of 5-10 times In, which means a 10A device will trip at 50-100A. Lastly, Type D devices are intended to trip at fault currents of 10-20 times In, so a 10A device will trip at 100-200A.
What size is a Schneider 3 pole MCB?
✅ The product dimensions are (W) 54mm x (H) 85mm x (D) 77.5mm, and it weighs 0.31kg. It adheres to the IEC 60529 standard, offering a degree of protection rated at IP20 and IP40 when enclosed.
What is the Full Name of MCBs?
✅MCB Full Form - Miniature Circuit Breaker
✅Miniature Circuit Breaker
The full form of MCB is Miniature Circuit Breaker. An MCB is a type of electronic switch that operates automatically. It detects issues within a circuit by identifying excessive current flow, providing protection by interrupting the circuit to prevent damage.
What Are Miniature Circuit Breakers?
✅ Miniature Circuit Breaker (MCB) - Definition, Types, and Uses
A Miniature Circuit Breaker (MCB) is a safety device equipped with an electro-mechanical mechanism that automatically interrupts the flow of excessive current in a circuit. Unlike fuses, MCBs can be reset and reused without manual replacement, enhancing safety and convenience in electrical systems.
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