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BE1 Numerical Protection Systems
 
BE1 Numerical Protection Systems


BE1 Numerical Protection Systems are available in rack mount or retrofit friendly packages for any application. Their BESTlogic programmable logic provides the user with flexibility, while common protocols aid integration. Click here to see communications capabilities for the entire line.
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BE1-851
Overcurrent Protection System
 

Product Bulletin

Instruction Manual

Protocol Manuals

Product Software

Application Guides

Guideform Specifications

Bulletin UHM
(includes stylechart)

BE1-851 Manual

DNP3 Manual

BESTCOMS

Generator Protection

MicrosoftWorddoc BE1-851 Specs

 

 

Modbus Manual

BESTprint

Transformer Protection

AdobeReaderlogo BE1-851 Specs

 

 

 

 

 

 

Click here for Application Notes and Technical Papers and other Resources

 

The BE1-851 multifunction, numerical relay that provides three phase and ground or three phase, ground, and negative sequence overcurrent protection together with four shot recloser, breaker failure, breaker monitoring, control, and metering functions in an integrated system.
BE1-851 Family
Available in three
fully drawout
case configurations
Protective Relays
Application Table
Application Engineers
Regional Sales Managers
Sales Reps
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Device Functions
 
50 - Instantaneous Overcurrent 51 - AC Time Overcurrent 62 - Time Delay
BF - Breaker Failure 79 - AC Reclosing
Modbus TCP Option
Modbus RTU Option


Standard features include:

  • Allows the user to select the optimal response characteristic separately for phase and ground elements.
  • BESTlogic provides the user with complete flexibility in configuring a protection and control system. User programmable variable and switch names make these relays completely self documenting.
  • Available in three case configurations to fit any installation requirements. All three are fully drawout and one includes test paddle for testing in case.
  • BESTCOMS GUI software available to aid in setup.
     

Application Notes and Technical Papers and other Resources

Application Notes
- Application Note PC-COM01 - Basic instructions for setting up HyperTerminal and Terminal
- Application Note PC-51Q01 - Consideration on applying negative sequence overcurrent elements and
  Negative Sequence Time Overcurrent Coordination Example- Application Note PC_RTF Compare - Instructions for an easy way to quickly and accurately compare two numeric relay settings files using BESTCOMS and Microsoft® Word.
- Application Note PC-ArcFlash - Arc Flash Hazard Mitigation Through Relaying
- Application Note PC-ETHERNET - Accessing BESTCOMS data from Ethernet network using Serial to Ethernet Converter

Technical Papers
- Protective Relaying Methods for Reducing Arc Flash Energy
- Load Shedding for Utility and Industrial Power System Reliability
- Reliability Considerations of Multifunction Protection
- Protective Relaying When Distributed Generation is Added to Your Circuit
- Intertie Requirements for DGs Connected to Radial Distribution Feeders
- Breaker Monitoring with Numerical Relay
- Commissioning Numerical Relays

Other Resources
- BE1-851 DNP Certification Report
- BNS Time Current Characteristic Spreadsheet
- Electric Calculations Spreadsheet

ISO Certificate Link


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