BE1 Numerical Protection Systems

BE1 Numerical Protection System navigation

BE1 Numerical Protection Systems are available in rack mount or retrofit friendly packages for any application. Visit the Logic Library for common application examples and BESTlogicPlus programmable logic files.

BE1-11i Intertie Protection System

Product Bulletin	Instruction Manual	Protocol Manuals	Product Software	Application Guides	Guideform Specifications and Drawings
Bulletin URI(includes stylechart)	BE1-11i Manual	DNP3 Manual	BESTCOMSPlus™	Generator Protection	BE1-11i Specs
		Modbus Manual	BEST61850	Transformer Protection	BE1-11i Specs
		IEC 61850 Manual			Product Drawings
Click here for Application Notes and other Resources

The BE1-11i is a multifunction numeric Intertie Protection relay that meets protection and control requirements outlined in the Intertie Protection Standard IEEE Standard No.: 1547-2003, and California Energy Commission Rule 21 for the majority of applications. The BE1-11i provides three phase, ground, and negative sequence directional or non-directional overcurrent protection with four shot recloser, forward or reverse power protection, breaker failure, over/underfrequency, over/undervoltage and sync check, breaker monitoring and control, sequence-of-events recording, fault reporting, rate-of-change frequency, and metering functions, all in an integrated system.


	Available in fully drawout half rack case

Standard features include:

Each overcurrent element can be individually set for forward or reverse directional or non-directional control for maximum flexibility in any application.
Includes distance to the fault to aid in timely fault location and service restoration.
BESTlogicPlus 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.










Device Functions


















		See How to Verify Your Settings the EASY way

Large high-contrast programmable 128x64 LCD display allows the relay to replace local indication and control functions, such as metering, alarm annunciation, and control switches.
Four "Table Lookup" time curves create custom curve shapes using 2-40 points
Three independent communication ports with protocol support allows integration with distributed control systems.
Optional RS-485 and copper or fiber Ethernet communications, Modbus™, and DNP3 protocols
Available with optional IEC 61850 implementation
Web page and user-selectable email triggers for remote alarm reporting
High-speed BESTCOMSPlus™ user interface via USB
Power Quality reporting
Non-volatile expanded event memory
Includes Real Time Clock with 8 hour capacitor ride through and battery backup.

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-59N01 - A discussion of two methods to determine the zero sequence component of the line voltage and tripping with the 59N function
- Mathcad file for PC-59N01
- 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-2502 - Understanding and applying the sync check (25) phase angle compensation in Basler numeric relays.
- Application Note PC-IPS01 - An under frequency load shedding protection solution that meets NPCC regulatory change in the Northeast United States.
- Application Note PC-ArcFlash - Arc Flash Hazard Mitigation Through Relaying

Technical Papers
- Protective Relaying Methods for Reducing Arc Flash Energy
- A Review of Negative Sequence Current
- Load Shedding for Utility and Industrial Power System Reliability
- Reliability Considerations of Multifunction Protection
- Myths of Protecting the Distributed Resource To Electric Power System Interconnection
- Distributive Generation and Interconnection: Protection, Monitoring, and Interconnection Opportunities
- 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
- Effects of Distributed Generation on Utility Protection Schemes

Other Resources
- BNS Time Current Characteristic Spreadsheet
- Electric Calculations Spreadsheet