Protection Relay

Product Details:

The SIPROTEC-7SD80 line differential protection relay is a highly capable solution for ensuring the safety and reliability of power systems. Its advanced protection features, flexible communication options, and robust hardware make it an excellent choice for modern electrical networks, ensuring that they can operate safely and efficiently under a variety of conditions.

Product Details:

Application MiCOM P122/P123/P127 relays provide a wide range of protection functions allowing their use in several applications: b Main or backup protection on MV&HV systems b Overhead lines and underground cables as a backup on HV systems b Neutral systems protection (Insolated, solid earthed, resistance earthed and Petersen coil earthed) b MV subscribers, Industry, Transport b Generator and transformer scheme b High impedance scheme for busbar and machine protection

 Main functions The MiCOM P122/P123/P127 protection relays are comprised of full suite of protection functions as well as automatic recloser and auxiliaries. All available functions, including protection, automation, communication, leds, inputs and outputs, are easily programmable through the user-friendly human machine interface and/or the MiCOM S1 Studio software interface.

Additional Information:

• Delivery Time: 1 week

Product Details:

 General Description

• Model: REL52016 (also referred to as P3U30‑6AAA2BBAA)
• Type: Universal protection relay suitable for buildings, industrial facilities, utilities, and large-scale processes
• Power Supply: 48 VAC/DC to 230 VAC/DC

�� I/O Configuration

• Current Inputs: 3 CT phase currents + 1 residual current input
• Voltage Inputs: 4 VT inputs
• Digital Inputs/Outputs: 16 digital inputs, 8 digital outputs, plus 1 watchdog output
• Communications: One RS‑485 port (rear) + one USB port (front)

�� Protection & Monitoring Features

• Protection Functions (ANSI standard):
  • Phase overcurrent (50/51), directional overcurrent (67)
  • Earth fault (50N/51N, 67N, transient 67NI)
  • Breaker failure (50BF), recloser (79), under/over‑voltage (27/59), under/over‑frequency (81)
  • Negative sequence overcurrent, capacitor bank unbalance, locked‑rotor protection, syn‑check, CT/VT supervision, fault locator, motor-related protections etc. Programmable stages up to 99
• Measurement & Monitoring: Captures 3-phase currents, sequence components, voltage, power types, energy, harmonics, THD, frequency, phasor diagrams, fault reactance and location, breaker wear condition

 

�� Specifications & Physicals Dimensions: ~170 × 170 × 205 mm

• Weight: ~2.5 kg
• Environmental Rating:
  • Operating temperature: –40 to 65 °C
  • IP54 protection, conformal coating, suitable for mechanical vibration and shock

 

�� Control & Communication

• User Interface: 128×64 px LCD display with single-line schematic, 2 customizable keys, front LEDs
• Logic & Control: Programmable logic, switchgear control, interlocking, local/remote operation, web server interface, Easergy SmartApp via mobile, four setting groups
• Logging: Event logs, disturbance recordings, tripping context

 

�� Compliance & Certification

• Protocols: IEC 60870‑5‑101/103, DNP3, Modbus RTU, DeviceNet, SPAbus
• Standards: IEC-rated emission and immunity, RoHS/REACH, WEEE, conform with Schneider’s Green Premium environmental standards
• Warranty: Standard 2 years; up to 10 years with extended plan

Additional Information:

• Delivery Time: Ex Stock / 2 Weeks
• Packaging Details: Standard

Product Details:

Basic Overview

The REL52008, part of the Easergy P3U series, is a universal protection relay designed for medium-voltage distribution, grid automation, and industrial systems. It combines robust protection features with versatile monitoring, control, and communications capabilities

• Model: REL52008 (P3U30‑6AAA2BCAA)
• Power Supply: 48–230 V AC/DC; digital inputs accommodate 110–230 V

�� Inputs & Outputs

• Current Inputs: 3 phase CT + 1 residual CT
• Voltage Inputs: 4 VT channels (100 V/110 V)
• Digital I/O: 16 digital inputs / 8 digital outputs + 1 watchdog
• Communications Ports: 1 front USB, 2 rear RJ45 (Ethernet)

��️ Protection Functions

Supports over 40 protection functions, including:

• Phase & Directional Overcurrent: ANSI 50/51, 67
• Earth Faults: ANSI 50N/51N, 67N, 67NI
• Breaker Failure (50BF), Broken Conductor (46), Cold Load Pickup, etc.
• Automatic Recloser (79), motor and transformer protections, locked-rotor (48/51LR), cap bank vulnerability (51C/59C), syn-check (25)

�� Measurement & Monitoring

Provides comprehensive electrical measurements:

• Currents (phase sequence), voltages (phase-to-earth, between phases), power types, energy
• Frequency, phasor diagrams, fault reactance, fault location methods, CT/VT monitoring

�� Communications & Cybersecurity

• Protocol Support: IEC 61850 (ed. 1 & 2), IEC 60870‑5‑101, DNP3, Modbus TCP, Ethernet/IP
• Networking: Supports redundancy via RSTP and PRP
• Cybersecurity: Port hardening and password protection

��️ Control & Diagnostics

• Switchgear Control: Local and remote operation, interlocking, single-line diagram control keys
• Web Server & App Integration: Easergy SmartApp and embedded HTTP server
• Programmable Logic & I/O: Custom relay logic, setting groups, breaker wear and condition monitoring

�� Logging & Record-keeping

• Capture and store event logs, disturbance recordings, trip contexts
• Provides CT/VT and trip-circuit supervision diagnostics

�� Form Factor & Use

• Design: 4‑unit height panel-mount, ring-lug CT/VT terminal connections
• Known for high reliability in medium-voltage feeder applications and protection coordination scenarios

✅ Summary

The REL52008 Easergy P3U series is a full-featured, IEC/SI-compliant protection relay offering:

 

• Broad overcurrent, earth fault, motor, and transformer protection
• Advanced measurement and fault-location capabilities
• Rich communications with redundancy and cybersecurity features
• Comprehensive control, diagnostics, and logging

Additional Information:

• Delivery Time: Ex stock

Product Details:

Overview & Model Info

• Series: PowerLogic P3 (Easergy P3U30)
• Model: REL52047 (P3U30‑6AAA1BBAA)
• Function: Universal protection relay for medium-voltage feeder applications—ideal for buildings, utilities, industrial plants, and large processes

🔌 Power Supply & I/O

• Auxiliary Supply: 48–230 V AC/DC; digital inputs support 24–230 V DC/AC
• Measurement Inputs:
  • CT: 3 phase + 1 residual (1 A/5 A)
  • VT: 4 channels (100/110 V)
• Digital I/O: 16 digital inputs, 8 digital outputs + 1 watchdog output
• Comms Ports: 1 front USB, 1 RS‑485 on the rear

🛡️ Protection Features

Includes robust protection for feeder circuits:

• Overcurrent: Phase (50/51), directional (67)
• Earth faults: 50N/51N, directional (67N), transient (67NI)
• Breaker failure (50BF), broken conductor (46), cold-load pick-up (23)
• Recloser (79), syn‑check (25), under/over-voltage (27/59), frequency relays (81/81N/81R), and capacitor unbalance (51C)
• Motor/transformer: Locked-rotor (48/51LR), negative sequence overcurrent (46), motor restart inhibition (66)
• Additional: Fault locator, CT/VT supervision, arc detection (H₂/H₅) programmable stages up to 99

📏 Measurements & Diagnostics

• Measures voltages, currents, sequence components, power, energy, frequency.
• Offers phasor diagrams, fault reactance calculation, relay diagnostics (trips, breaker wear)

🌐 Communications & Cybersecurity

• Protocols: IEC 60870‑5‑101/103, DNP3, Modbus RTU, DeviceNet, SPAbus
• Includes password protection and port hardening features

🧩 User Interface & Mounting

• Features a user-friendly LCD interface with intuitive navigation
• Designed for panel mounting: 4U height, ring-lug wired CT/VT terminals
• Compact dimensions (~275 × 160 × 215 mm) and weight (≈3.5 kg)

🌍 Environmental & Packaging

• Packaged in at least 70% recycled cardboard (varies by region)
• Platforms built for reliability in harsh environments (industrial grade).

✅ Summary

The REL52047 is a versatile, feature-rich relay built for medium‑voltage feeder protection, combining:

• Comprehensive ANSI/IEC protection (overcurrent, earth fault, breaker failure, recloser, motor/transformer, arc flash detection)
• Extensive measurement, fault location, and diagnostics
• Modern communications and cybersecurity safeguards
• User‑friendly UI, compact form factor, and durable design

 

Additional Information:

• Packaging Details: Standard Packing available

Product Details:

 

Overcurrent protection

SIPROTEC 7SJ80

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. The SIPROTEC 7SJ80 features "flexible protection functions". Up to 20 additional protection functions can be created by the user. Therefore, protection of change for frequency or reverse power protection can be realized, for example. The relay provides circuit-breaker control, further switching devices and automation functions. The integrated programmable logic (CFC) allows the user to add own functions, e.g. for the automation of switchgear (interlocking). The user is also allowed to generate user-defined messages.

Features

Hardware 

• 4 current transformers
• 0/3 voltage transformers
• 3/7/11 binary inputs (thresholds configurable using software)
• 5/8 binary outputs (2 changeover / form C contacts)
• 1 life contact
• Pluggable current and voltage terminals.

Functions

·         Definite

Product Details:

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.

• 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.

Product Details:

Advanced Protection Capabilities:

• The SIPROTEC-7RW80 continuously monitors voltage and frequency levels within the electrical system. If it detects any deviations from the permitted limits, such as overexcitation or significant fluctuations in frequency, it responds according to the predefined settings. This proactive monitoring helps prevent system instability and potential failures.

System Decoupling and Load Shedding:

• In scenarios where there is a risk of system collapse due to excessive frequency drops, the relay can initiate system decoupling and load shedding to maintain overall stability. This functionality is crucial for protecting critical system components and ensuring continued operation under adverse conditions.

Integrated Load Restoration Function:

• The SIPROTEC-7RW80 includes an integrated load restoration function that facilitates the re-establishment of the power system once the frequency has recovered, allowing for a smooth transition back to normal operations.

Flexible Protection Functions:

• The relay supports flexible protection functions, allowing users to create up to 20 additional protection functions tailored to specific needs. For instance, users can implement a rate of change of frequency function or a reverse power function, enhancing the adaptability of the device to various operational requirements.

Comprehensive Control Capabilities:

• The SIPROTEC-7RW80 offers control for circuit breakers and can manage additional primary switching devices such as grounding switches, transfer switches, and isolating switches. This capability simplifies operations and enhances overall system automation.

Programmable Logic Functionality:

• The integrated programmable logic (CFC) allows users to implement custom functions for switchgear automation, including interlocking, transfer schemes, and load shedding scenarios. This eature provides flexibility in system design and enhances operational efficiency.

User-Defined Messaging:

• Users can generate customized messages within the relay, facilitating better communication and monitoring of system status.

Communication Module:

• The communication module is designed to be independent from the protection functions. This modularity enables easy upgrades to future communication protocols, ensuring long-term compatibility and functionality.

Hardware Specifications:

Inputs:

• Supports 3 voltage transformers for accurate voltage measurement.
• Configurable 3/7 binary inputs that can be adjusted through software, allowing users to set specific thresholds based on their requirements.

Outputs:

• Equipped with 5/8 binary outputs, including 2 changeover contacts, providing flexibility for control and signaling.

Additional Features:

• Includes 1 life contact for monitoring device status.
• Features pluggable terminal blocks, simplifying installation and maintenance processes.

Product Details:

• The SIPROTEC-7UT85 serves as the main protection device for two-winding transformers, featuring differential protection with additional stabilization to handle various transformer configurations.
• Supports up to 2 restricted ground-fault protection functions, enhancing security and ensuring reliable fault detection.

Versatile Application:

• The device includes backup protection functions that can be used for cables, lines, and shunt reactors, making it a versatile solution for different system components.
• Interoperability with SIPROTEC 5 and SIPROTEC 4 line protection devices, enabling the use of line differential protection functions.

Modular and Flexible Design:

• The SIPROTEC 7UT85 benefits from a modular structure that allows for flexible customization and integration. Its compatibility with the DIGSI 5 engineering tool facilitates modern protection, control, automation, and monitoring applications.
• Expandable I/O structure within the SIPROTEC 5 modular system, ensuring adaptability for future needs.

Extensive Measuring Capabilities:

Equipped with:

• 5 three-phase current measuring points.
• 5 one-phase current measuring points.
• 5 three-phase and 5 one-phase voltage measuring points.
• Expandable to support 3-sided transformer protection, providing coverage for complex setups.

Inputs and Outputs:

The SIPROTEC 7UT85 comes in 2 standard variants, with:

• 8 current transformers.
• 7 to 19 binary inputs and 7 to 23 binary outputs, allowing for extensive control and monitoring.

Compact and Adaptable Hardware:

• Flexible housing width ranging from 1/3 × 19 inches to 2/1 × 19 inches, making it suitable for various installation environments.
• The device is designed to withstand extreme environmental conditions through conformal coating of electronic boards.

Applications:

Special Transformer Protection:

• Ideal for special transformers, including phase shifters, FACTS and converter transformers, arc furnace transformers, and HVDC transformers, ensuring reliable performance across diverse use cases.

Backup Protection:

• Can act as a backup protection device for motor and generator differential protection applications.

Short Cable and Line Protection:

• Provides protection for short cables and lines, offering additional security for various system components.

Voltage Control:

• Enables voltage control for two- and three-winding transformers, including parallel control setups.

Additional Line Protection:

• Supports distance and line differential protection, further extending its application range
• Reliable and Powerful Protection:

• The SIPROTEC-7UT85 ensures fast and stable fault detection for transformers, minimizing the risk of damage and ensuring quick recovery.