BE1-11t Transformer Protection System is designed with features to address issues with reliability arising from the complexity of programming.
With BESTspace™ files, multiple BESTlogic™Plus preprogrammed logic schemes, and associated application notes, you can be confident that you have the complete transformer protection you need.
Features
Proven algorithms based on more than 50 years of relaying experience and more than 30 years of reliable digital relaying design.
One relay for most applications.
One proven, stable firmware package for all BE1-11 series relays.
Differential protection with dual slope for quick and selective protection against internal faults.
Advanced differential protection with saturation detection algorithm.
Automated tap calculation simplifies setup and detailed differential reports provide confirmation of a properly connected relay.
Transformer through-fault monitoring tracks external faults to which the transformer has been subjected to provide data for wear-based maintenance.
Distance protection option uses calculated fault impedance on a power line to determine fault distance.
Sync check protection option provides anticipatory closing signals by considering breaker closing time and frequency to minimize closing angle.
Automatic reclosing option provides for quick re-establishment of power.
Three Communication Ports: Front USB, rear RS-485 and Ethernet RJ45 or fiber optic are available for BESTCOMSPlus®, BESTnet™Plus, Modbus®, DNP, and IEC 61850 protocols, also featuring user configurable email notifications.
Enhanced I/O options available with the J-style case: 10 inputs with 5 outputs or 7 inputs with 8 outputs.
Benefits
The Offline Simulator, in BESTlogic™Plus, reduces commissioning errors by providing the ability to test and troubleshoot logic without the need for expensive physical hardware.
Complete transformer protection system for applications including generation step up transformers, intertie installations, network transformers and distribution feeder step down transformers.
BESTCOMSPlus® software, provided free of charge, makes it easy to enter protection settings with confidence with its intuitive settings, built-in error checking, and summary screens.
Complex protection is easy to configure and understand with preprogrammed schemes, drag-and-drop logic, user labels, and notes provided by BESTlogic™Plus.
Quick and reliable fault clearing with minimal false operations.
Easily navigate settings and metering with the intuitive HMI menu and large display.
Customize displayed information to meet different application needs with user-defined indicators and labels.
Select and Operate buttons, on the front panel, provide direct control of internal logic.
Optional remote RTD module provides RTDs and analog input and output channels for expanded protection and control possibilities.