Basler Electric BE1-11d DC Power Protection System

Introduction

The BE1-11d DC Power Protection System provides flexible, reliable, and economical dc power

protection, control, monitoring, and measurement functions. The capabilities of the BE1-11d make it well

suited to provide comprehensive dc power protection. The BE1-11d offers dc overcurrent,

over/undervoltage, rate of rise, power, and thermal overload protection functions as well as breaker

reclosing and RTD (Resistance Temperature Detector) inputs with remote module. 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. System metering and

status information are available at the BE1-11d front panel and through the BE1-11d communication

ports. The system is suitable for mounting in OEM cubicle or retrofit switchgear applications.

A front-panel USB port or optional rear Ethernet port enables local communication between the BE1-11d

and a PC operating with BESTCOMSPlus® software. BESTCOMSPlus software simplifies the

commissioning process by providing a graphical interface for setting the BE1-11d and configuring a

protection and control scheme for your application. Through BESTCOMSPlus, all BE1-11d settings and

logic can be retained in a file for printing or uploading to other BE1-11d protection systems. Oscillography

and sequential events records can be retrieved from a BE1-11d, viewed, and printed.

Front-panel features include a large, backlit alphanumeric display and LED indicators that display system

parameters, BE1-11d settings, and BE1-11d 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 BE1-11d make it ideally suited for applications with the following attributes:

• Isolation between the IT-D and the BE1-11d via fiber optic communications

• The flexibility provided by wide setting ranges, multiple setting groups, and multiple coordination

curves in one unit

• The economy provided by a multifunction unit. This one unit can provide all of the protection,

control, metering, and local and remote indication functions required for typical applications.

• The small size and limited behind-panel projection facilitates modernizing protection and control

systems in existing equipment

• Coordinated protection with other BE1-11 protection systems on both ac and dc sides of a

rectifier

• High-speed Ethernet communications and protocol support

• The capabilities of a numeric multifunction relay

• IEC 61850 functionality

Features

The BE1-11d protection system includes many features for the protection, monitoring, and control of dc

switchgear. These features include protection and control functions, metering functions, and reporting and

alarm functions. A highly flexible programmable logic system called BESTlogic™Plus allows the user to

apply the available functions with complete flexibility and customize the system to meet the requirements

of the protected dc switchgear. Programmable I/O, extensive communication features, and an advanced

user interface provide easy access to the features provided.

The following information summarizes the capabilities of this multifunction device. Each feature, along

with its setup and use, is described in detail in the later chapters of this manual.

General Features

HMI (Human-Machine Interface)

Each BE1-11d has a front-panel display and 12 LED indicators: Power Supply Status, Relay Trouble

Alarm, Minor Alarm, Major Alarm, Trip, and Indicator 1 through 7 (programmable in BESTlogicPlus). The

backlit, liquid crystal display (LCD) allows the BE1-11d to replace local indication and control functions

such as panel metering, alarm annunciation, and control switches. Four scrolling pushbuttons enable

navigation through the LCD menu tree. Parameters are changed using the Edit pushbutton. Targets,

alarms, and other registers are cleared with the Reset pushbutton. In Edit mode, the scrolling

pushbuttons provide data entry selections. Edit mode is indicated by an LED on the Edit pushbutton.