Multilin 3 Series

Intuitive industrial and utility protective relays for feeders, motors and transformers

The 3 Series family of protection relays are functional and economical protection solutions for feeders, motors and transformers. By providing protection, control, monitoring and metering, and both local and remote user interfaces in one assembly, the 3 Series family effectively eliminates the need for expensive discrete components. The 3 Series family provide extensive diagnostic information allowing users to troubleshoot and minimize downtime. The SR 3 Series streamlines work flow processes and simplifies engineering tasks such as configuration, wiring, testing, commissioning, and maintenance.

Key Benefits

  • Easy to use and cost effective
  • Effortless draw-out construction
  • Environmental monitoring system to alarm on destructive operating conditions
  • Easy to use interface and set up in one step
  • Accelerated Life Cycle tested to ensure reliability under abnormal conditions
  • Advanced diagnostics to increase reliability
  • Large backlit display with 40 characters
  • Flexible communications with multiple ports & protocols to allow seamless integration
  • Easy access to information via multiple communication network options
  • Powerful Security Audit Trail

Applications

Multilin 3 Series

Intuitive industrial and utility protective relays for feeders, motors and transformers

The 3 Series family of protection relays are functional and economical protection solutions for feeders, motors and transformers. By providing protection, control, monitoring and metering, and both local and remote user interfaces in one assembly, the 3 Series family effectively eliminates the need for expensive discrete components. The 3 Series family provide extensive diagnostic information allowing users to troubleshoot and minimize downtime. The SR 3 Series streamlines work flow processes and simplifies engineering tasks such as configuration, wiring, testing, commissioning, and maintenance.

Key Benefits

  • Easy to use and cost effective
  • Effortless draw-out construction
  • Environmental monitoring system to alarm on destructive operating conditions
  • Easy to use interface and set up in one step
  • Accelerated Life Cycle tested to ensure reliability under abnormal conditions
  • Advanced diagnostics to increase reliability
  • Large backlit display with 40 characters
  • Flexible communications with multiple ports & protocols to allow seamless integration
  • Easy access to information via multiple communication network options
  • Powerful Security Audit Trail

Applications


Key Features		  
 
  • Event Recorder: 256 events with 1ms time stamping
  • Oscillography with 32 samples per cycle and digital states
  • IRIG-B clock synchronization
 
  • Motor health diagnostics
  • Security audit trail

 

monitoring & metering

 

 

Preventative Maintenance:
The 3 Series allows users to track relay exposure to extreme environmental conditions by monitoring and alarming at high temperatures. This data allows user to proactively schedule regular maintenance work and upgrade activities.

 

Failure Alarm
The 3 Series detects and alarms on communication port and IRIG-B failures. The 3 Series also enables users to analyze system performance via diagnostics information such as event records, oscillography, etc.

 

Statistical Data
The 3 Series records statistical data in order to assist in diagnosing common motor faults, as well as assisting in planning preventative maintenance.

 

Advanced Device Health Diagnostics
The 3 Series performs comprehensive device health diagnostic tests during startup and continuously at runtime to test its own major functions and critical hardware. These diagnostic tests monitor for conditions that could impact and present device status

 


 


Key Features		 
 
  • 4 X20 character LCD display
  • Control panel with up to 12 LED indicator
  • Front USB and rear serial, Ethernet and Fiber ports
  • Multiple protocols - IEC 61850, ModBus™ RTU, ModBus™ TCP/IP, DNP 3.0, IEC60870-5-104, IEC60870-5-103
 
advanced communications
 
advanced drawout construction



The 3 Series’s advanced draw-out construction allows removal without disconnecting rear communications cables.

 front panel 
 front panel display

 

Display
A 4 line liquid crystal display (LCD) allows visibility under
varied lighting conditions. When the keypad and display
are not being used, system information is displayed by
scrolling through a maximum of 30 user-defined default
messages. These default messages appear only after a
user-defined period of inactivity. The metering summary
page is displayed to show original metered values.

 
EnerVista software
 
The EnerVista suite is an industry leading set of software programs that simplifies every aspect of using a 3 Series Relay. The EnerVista suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate the information measured into DCS or SCADA monitoring systems. Convenient COMTRADE and sequence of event viewers are an integral part of the set up software and are included to ensure proper protection and system operation. Learn More
 
EnerVista software screens
 
security - enabling NERC CIP compliance
 
Access Control
Multilin devices and relays are designed with simple but powerful security to enable reliability and compliance for virtually any project or implementation. With support for multi-level permissions and multi-factor supervisory controls, Multilin devices can help you manage the integrity of your system during commissioning, testing, implementation, and beyond. The 3 Series family provides separate authentication for settings and commands to the system. In addition, as discrete authentications for local and remote access, it also provides a supervisory control factor that can lock or unlock a device for configuration changes and other modifications.
 
Intrusion Detection
Multilin’s family of protection and control products can also help enable your security perimeter and intrusion detection programs. By providing essential alarming and logging of critical events, Multilin devices can help you detect potential breaches within your system and allow you to respond quickly and effectively. Specifically, unsuccessful access attempts are logged, alarmed, and lead to potential attackers being locked out. This ensures the reliability of your system during questionable activity control factor that can lock or unlock a device for configuration changes and other modifications.
 
  
Auditing and Reporting
With the Security Audit Trail reporting feature and support for Event logging of key activities such as configuration changes, Multilin devices can help ensure device and protection system integrity, and perform forensic auditing of activities and changes for compliance.		auditing and reporting
 

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Typical applications

Select a typical application to view the associated one line diagram, functions, and produ