MULTILIN SR745 manages relays

MULTILIN SR745 manages relays

Product Details Introduction

The Multilin SR745 is an advanced management relay designed for feeder protection and management in power systems. It provides a wide range of protection, control, and monitoring functions to ensure the stable operation of the system and rapid response in case of faults.

Product Overview

Model: SR745

Brand: Multilin

Product type: Feedline protection and management relay

Application area: Protection and control of power transmission and distribution systems

major function 

Overcurrent protection:

Provide overcurrent protection for phase to phase, grounding, and neutral wires.

Support multiple time current characteristic curves (such as IEC and ANSI standards) to meet different protection requirements.

Overvoltage/undervoltage protection:

Monitor system voltage, provide overvoltage and undervoltage protection to prevent equipment damage due to abnormal voltage.

Circuit breaker failure protection:

Provide circuit breaker failure protection function to quickly isolate the fault area when the circuit breaker cannot operate normally.

Automatic reclosing function:

Support automatic reclosing function to quickly restore power supply after transient faults.

Frequency protection:

Provide frequency protection, monitor changes in grid frequency, and prevent damage to equipment caused by frequency anomalies.

Event and fault records:

Record detailed event and fault information for easy fault analysis and system maintenance.

Communication function:

Supports multiple communication protocols, such as Modbus, DNP3, and IEC 61850, for data communication and remote monitoring through RS485 or Ethernet interfaces.

technical specifications

Power supply voltage: Multiple power supply options, commonly including 24VDC, 48VDC, and 110VDC.

Input voltage range: Suitable for different voltage levels of the power grid.

Protection function: Supports overcurrent, overvoltage, undervoltage, frequency protection, circuit breaker failure protection, etc.

Output contacts: Provide multiple output contacts for controlling circuit breakers and other devices.

Communication interface: Supports RS485 and Ethernet interfaces, compatible with multiple industrial communication protocols.

Environmental adaptability: Designed for industrial environments, capable of stable operation under a wide temperature range and high humidity conditions.

Installation method: Supports panel installation and DIN rail installation for easy installation and maintenance.

application area 

Transmission and distribution system protection: used for feeder protection in transmission and distribution networks to ensure the safe operation of the system.

Industrial power system protection: Protecting key equipment and lines in the industrial power system to ensure the stability of the production process.

Distribution station protection: used for feeder protection in distribution stations to prevent large-scale power outages caused by faults.

Power facility protection: Provide protection and monitoring functions in power plants, substations, and other power facilities.

Installation and maintenance

Installation:

Location: Installed inside the distribution cabinet or control cabinet, connected to the protected equipment and system.

Method: Supports panel installation and DIN rail installation to ensure easy and secure installation.

maintain:

Regular inspection: Regularly check the connection and operation status of the relay to ensure its normal operation.

Firmware update: Perform firmware updates as needed to enhance functionality and performance.

Fault diagnosis: Utilize the diagnostic function of relays to promptly identify and solve potential problems.

advantage

High reliability: Provide high reliability protection functions to ensure the safe operation of the power system.

Flexibility: Supports multiple protection functions and communication protocols to adapt to different application requirements.

Data recording: Provide detailed event and fault records for easy analysis and maintenance.

High integration: seamlessly integrated with other Multilin protection devices to form a complete protection and control solution.

summary

The Multilin SR745 Management Relay is a high-performance power system protection device that provides comprehensive protection, control, and monitoring functions. Its reliable performance and flexible application options make it an ideal choice in the field of power system protection.

Product image

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