Introduction; Applications - Basler BE1-11g Instruction Manual

9424200994 Rev U

Introduction

The BE1-11g Generator Protection System provides flexible, reliable, and economical protection, control,
monitoring, and measurement functions for small, medium, and large generators. The BE1-11g offers
vector jump, out of step, distance, phase and neutral current differential, overexcitation (V/Hz),
overcurrent, directional overcurrent, over/undervoltage, over/underfrequency, sync-check, RTD
(Resistance Temperature Detector) with remote module, breaker failure, and fuse loss protection. It offers
breaker- and trip-circuit monitoring, and oscillography and sequential events recording. Control features
include virtual selector switches, circuit breaker control, virtual lockout, and variable-mode timers. An auto
synchronizer is optional. System metering, status information, and fault locating are available at the
BE1-11g front panel and through the BE1-11g communication ports. The capabilities of the BE1-11g
make it suitable for detecting generator faults and abnormal operating conditions in an integrated system.
Suitable BE1-11g applications include large power generation, distributed generation, local backup
generation, and intertie protection applications.
A front-panel USB port or optional rear Ethernet port enables local communication between the BE1-11g
and a PC operating with BESTCOMSPlus® software. BESTCOMSPlus software simplifies the
commissioning process by providing a graphical interface for setting the BE1-11g and configuring a
protection and control scheme for your application. Through BESTCOMSPlus, all BE1-11g settings and
logic can be retained in a file for printing or uploading to other BE1-11g protection systems. Oscillography
and sequential events records can be retrieved from a BE1-11g, viewed, and printed.
Front-panel features include a large, backlit alphanumeric display and LED indicators that display system
parameters, BE1-11g settings, and BE1-11g status. Pushbuttons enable navigation through the display
menu, changes to settings, resetting of targets (with password access), and direct access to virtual
switches.

Applications

The capabilities of the BE1-11g make it ideally suited for applications with the following attributes:
•
Generator specific protection and control elements including loss of field, out of step, stator
ground protection, and sync check or synchronizer
•
Generator focused protection including reverse power, negative-sequence, overexcitation, and
differential
•
Isolation between the RTDs and the BE1-11g due to distance between the BE1-11g package and
the RTD module
•
Low burden to extend the linear range of CTs
•
The flexibility provided by wide setting ranges, multiple setting groups, and multiple coordination
curves in one unit
•
The economy and space savings provided by a multifunction, multiphase unit. This one unit can
provide all of the protection, control, metering, and local and remote indication functions required
for typical applications.
•
Directional control and fault recording
•
High-speed Ethernet communications and protocol support
•
The capabilities of a numeric multifunction relay
•
The small size and limited behind-panel projection facilitates modernizing protection and control
systems in existing equipment
•
Detection of low ground current levels (SEF option)
•
IEC 61850 functionality
•
Logic library with logic schemes for basic low Z grounded generator protection, low Z grounded
generator with sequential trip, low Z grounded generator with sequential trip and sync check,
basic high Z grounded generator protection, high Z grounded generator protection
BE1-11g
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Introduction