BASLER ELECTRIC BE1-51A / BE151A

BASLER ELECTRIC BE1-51A / BE151A

Clock

A real-time clock is included with a capacitor backup and is available with an optional battery backup.

Depending upon conditions, capacitor backup maintains timekeeping during an eight to 24 hour loss of

operating power. Battery backup maintains timekeeping when operating power is removed for five years

or longer.

IRIG

A standard IRIG input is provided for receiving time synchronization signals from a master clock.

Automatic daylight saving time compensation can be enabled. Time reporting is settable for 12 or 24-hour

format. The date can be formatted as mm/dd/yy or dd/mm/yy.

General Status Reporting

The BE1-951 provides extensive general status reporting for monitoring, commissioning, and

troubleshooting. Status reports are available from the front panel HMI or communication ports.

Demand Reporting

Ampere demand registers monitor phase A, B, C, Neutral, ±Power (kW), ±Reactive Power (kvar), and

Negative-Sequence values. The demand interval and demand calculation method are independently

settable for phase, neutral, and negative measurements. Demand reporting records today’s peak,

yesterday’s peak, and peak since reset with time stamps for each register.

Breaker Monitoring

Breaker statistics are recorded for a single breaker. They include the number of operations, accumulated

interrupted I or I2. and breaker time to trip. Each of these conditions can be set to trigger an alarm.

Trip Circuit Monitoring

A trip circuit monitor function is provided to monitor the trip circuit of a breaker or lockout relay for loss of

voltage (fuse blown) or loss of continuity (trip coil open). The monitoring input is internally connected

across OUT1. Additional trip or close circuit monitors can be implemented in BESTlogic using additional

inputs, logic timers, and programmable logic alarms.

Fault Reporting

Fault reports consist of simple target information, fault summary reports, and detailed oscillography

records to enable the user to retrieve information about disturbances in as much detail as is desired. The

relay records and reports oscillography data in industry standard IEEE Comtrade format to allow using

any fault analysis software. Basler Electric provides a Windows® based program called BESTwave™ that

can read and plot binary or ASCII format files that are in the COMTRADE format.

Sequence of Events Recorder

A 255 event Sequence of Events Recorder (SER) is provided that records and time stamps all relay

inputs and outputs as well as all alarm conditions monitored by the relay. Time stamp resolution is to the

nearest half-cycle. I/O and Alarm reports can be extracted from the records as well as reports of events

recorded during the time span associated with a specific fault report.

Alarm Function

Extensive self-diagnostics will trigger a fatal relay trouble alarm if any of the relay core functions are

adversely affected. Fatal relay trouble alarms are not programmable and are dedicated to the Alarm

output (OUTA) and the front panel Relay Trouble LED. Additional relay trouble alarms and all other alarm

functions are programmable for major or minor priority. Programmed alarms are indicated by major and

minor alarm LEDs on the front panel. Major and minor alarm points can also be programmed to any

output contact including OUTA. Over 20 alarm conditions are available to be monitored including user

definable logic conditions using BESTlogic.

Active alarms can be read and reset from the front panel HMI or from the communication ports. A

historical sequence of events report with time stamps lists when each alarm occurred and cleared. These

reports are available through the communication ports.

Version Report

The version of the embedded software (firmware) is available from the front panel HMI or the

communication ports. The unit serial number and style number is also available through the

communication port.