2-6
Quick Start
TP1-1021
These settings include protection and control, operating and logic, breaker monitoring, metering, and fault
recording. Engineering personnel can develop, test, and replicate the settings before exporting it to a file
and transmitting the file to technical personnel in the field. On the field end, the technician simply imports
the file into the BESTCOMS database and uploads the file to the relay where it is stored in nonvolatile
memory.
The GUI also has the same preprogrammed logic schemes that are stored in the relay. This gives the
engineer the option (off-line) of developing his setting file using a preprogrammed logic scheme, customizing
a preprogrammed logic scheme, or building a scheme from scratch. Files may be exported from the GUI to
a text editor where they can be reviewed or modified. The modified text file may then be uploaded to the
relay. After it is uploaded to the relay, it can be brought into the GUI, but it cannot be brought directly into
the GUI from the text file. The GUI logic builder uses basic AND/OR gate logic combined with point and click
variables to build the logic expressions. This reduces the design time and increases dependability.
The GUI also allows for downloading industry standard COMTRADE files for analysis of stored oscillography
data. Detailed analysis of the oscillography files may be accomplished using Basler Electric's BESTwave
software. For more information on Basler Electric's Windows® based BESTCOMS (GUI) software or
BESTwave, contact your local sales representative or Basler Electric, Technical Support Services
Department in Highland, Illinois.
GETTING STARTED
If your relay has power supply option 1 or 2, it can be supplied by normal 120V ac house power. These two
power supply options (1 and 2) are the midrange and high range ac/dc power supplies. The contact sensing
inputs are half-wave rectified, opto-isolators. The default contact recognition and debounce settings enable
their use on ac signals as well as dc signals.
The BE1-951 measures the A phase, B phase, and C phase current magnitudes directly from the three
current sensing inputs. The neutral and negative sequence magnitudes are calculated from the fundamental
component of each of the three-phase currents. When evaluating the negative sequence functions, the relay
can be tested using a single-phase current source. To fully evaluate the operation of the relay in the power
system, it is desirable to use a three-phase current source.
Connect a computer to the front RS-232 port (refer to Section 12,
Installation, for connection diagrams).
Apply power and Enter A= to gain setting access. Set the clock using the RG-TIME= and RG-DATE=
commands (refer to Appendix D,
Setting Terminal Communications, and Section 11, ASCII Command
Interface, for additional information).
Entering Test Settings
Enter SG (Setting General) to get a listing of the general setting commands with default parameters and put
them in a text file as described previously in Batch Command Text File Operations. Then enter S0 (Setting
group 0) to get a listing of the group 0 protection setting commands with default parameters and put them
in a text file also. With these two sub-groups of settings, you will not see the global security settings, user
programmable BESTlogic settings, settings for protection setting groups 0 and 1, settings for alarm
functions, and the settings for breaker monitoring functions.
Open the SG file in a text editor, change settings as required, and save the changes. For example:
•
The ratios for the phase and neutral current transformers (CTP, CTG).
•
The demand interval and CT circuit to monitor for the phase, neutral, and negative sequence
currents (DIP, DIN, DIQ).
•
The nominal system frequency (FREQ).
•
The normal phase sequence (ABC or ACB) for the system (PHROT).
•
Open the S0 file in a text editor, change settings as required, and save the changes.
Do not forget to add E;Y (Exit; Save Settings? Yes) to the end of both files. Enter A= to gain setting access
and then send each of these text files to the relay as described above under Batch Command Text File
Operations.
