SEL-849 | Schweitzer Engineering Easy-to-Install Motor Control Center Relay

Description 

The SEL-849 by Schweitzer Engineering is an easy-to-install Motor Control Center Relay. Designed for simplicity, it ensures seamless integration and reliable motor protection in diverse industrial applications.

Technical Specifications 

Information About SEL-849

MULTIPLE APPLICATIONS
The SEL-849 offers low-voltage motor protection in virtually all applications, including pumping, air-based, chiller, and bulk-material applications. It can be configured as a motor, variable-frequency drive (VFD) motor, or feeder protection relay. It can also be used as a telemetry device for monitoring, metering, and control.

COMPACT DESIGN FOR MCCS
A primary application for the SEL-849 is for overload and arc-flash protection of MCCs. In this application, the SEL-849 operates the contactor, controlling the start and stop of the motor. The SEL-849 receives start/stop commands with Ethernet-based industrial control protocols, contact inputs, or the remote HMI Start and Stop pushbuttons. The compact form-factor—71.1 mm (2.8 in) X 127.0 mm (5 in) X 152.4 mm (6 in)—easily installs in MCC drawers and buckets. Built-in current transformers save room and reduce installation time.

TELEMETRY FUNCTIONALITY
The SEL-849 is an excellent choice for telemetry applications for monitoring, metering, and control. Its small size, low cost, multiple communications options, and remote HMI options make the relay a perfect option for power distribution systems for such uses as end-of-line monitoring and power metering.

EASY-TO-USE WEB INTERFACE
The web interface makes it easy for electricians and technicians to configure and monitor the SEL-849.

EASY INTEGRATION WITH CONTROL SYSTEMS
Several communications protocol options, such as IEC 61850 Edition 1 and EtherNet/IP, allow the SEL-849 to be used with old and new control systems. Pick multiple sessions of Modbus TCP, Modbus serial, DNP3 LAN/WAN, or DNP3 serial for custom configuration of your applications. When dual Ethernet ports are selected, the relay also supports IEC 62439 PRP and fast failover switching. For maximum flexibility, the SEL-849 includes options for internally wetted or externally wetted contact inputs.

ARC-FLASH HAZARD PROTECTION
MCCs typically have large fault-current potential, resulting in increased arc-flash hazards. The SEL-849 relay’s arc-flash detection capability significantly reduces total arc-flash energy.

RUGGED HARDWARE YOU CAN RELY ON
All SEL relays are designed to operate in harsh environments where other relays may fail. The SEL-849 operates in extreme conditions, with an operating temperature of –40° to +85°C, and is designed and tested to exceed applicable standards, including vibration, electromagnetic compatibility, and adverse environmental conditions.

Manufacturer information

Schweitzer Engineering Laboratories, Inc. (SEL) is a leading manufacturer of power system protection, control, and automation solutions. Renowned for innovation, SEL products enhance the reliability and efficiency of electric power systems worldwide.

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