Basler Electric BE1-11m - Manual (Page 13)

9424200996 Rev L 1
Introduction
The BE1-11m Motor Protection System provides flexible, reliable, and economical protection, control,
monitoring, and measurement functions for medium and large motors. The BE1-11m offers thermal
protection of the motor with a current-based thermal model that includes unbalanced current biasing,
custom voltage dependent curves, RTD biasing, and emergency start override. The system offers
differential and overcurrent protection for internal faults as well as overcurrent, voltage, frequency, and
power elements for protection against abnormal system and process conditions. The BE1-11m offers
motor maintenance data, learns and records start data, breaker- and trip-circuit monitoring, oscillography,
and sequential events recording. Control features include manual and emergency starting, thermal
capacity start inhibiting, start and stop buttons, virtual selector switches, virtual lockout, and variable-
mode timers. System metering and status information are available at the BE1-11m front panel and
through the BE1-11m communication ports. The capabilities of the BE1-11m make it appropriate for use in
medium and large motor applications and in critical small motor applications. BE1-11m applications
include utility power generation facilities, water treatment facilities, petroleum drilling and refining, pulp
and paper mills, and chemical plants.
A front-panel USB port or optional rear Ethernet port enables local communication between the BE1-11m
and a PC operating with BESTCOMSPlus
® software. BESTCOMSPlus software simplifies the
commissioning process by providing a graphical interface for setting the BE1-11m and configuring a
protection and control scheme for your application. Through BESTCOMSPlus, all BE1-11m settings and
logic can be retained in a file for printing or uploading to other BE1-11m protection systems. Oscillography
and sequential events records can be retrieved from a BE1-11m, viewed, and printed.
Front panel features include a large, backlit alphanumeric display and LED indicators that display system
parameters, BE1-11m settings, and BE1-11m status. Pushbuttons enable navigation through the display
menu, changes to settings, and resetting of targets (with password access).
Applications
The capabilities of the BE1-11m make it ideally suited for applications with the following attributes:
•
Applications with large motor or important process that require comprehensive motor protection
and control
•
Applications that require loss of excitation protection for synchronous motors
•
Applications requiring an interface between the protection and control package and the process
control systems
•
Isolation between the RTDs and the BE1-11m due to distance between the BE1-11m 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.
•
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
BE1-11m Introduction