Atec Megger-MPRT8445 - Manual (Page 13)

MPRT
Megger Protective Relay Test System
13
Typical Phase to Phase Characteristic Test
Test History for IAC77 Relay
Resized Differential Slope Test Screen
Differential Wizard - Perform automatic winding pickup,
differential characteristic (slope) test and harmonic restraint
tests. In the figure below, the test result screen was resized
using the mouse and the windows drag and drop feature.
This allows the operator to more closely examine test
points and results. The user may then generate a test
report with the test results showing pass/fail based upon
input by the user.
Distance Wizard - Perform automatic reach, max angle of
torque and characteristic tests on single phase, three phase
open delta or three phase Y connected relays. User may
choose between fixed voltage and vary current or fix
current and vary voltage. In addition, the user may select
mho, lens, tomato or other basic distance characteristics
using a pull-down menu. The test report will provide
pass/fail information based upon user data input.
Directional Wizard - Perform automatic pickup test on
directional elements. A report will provide test result.
Import, Save, Execute Test Modules
AVTS Basic users can import test modules generated by
Megger, or someone else using the Advanced or
Professional versions of AVTS. The user can execute the
tests, save results and print results. In addition, users can
playback a Digital Fault Record, which has been generated
by the Professional version of AVTS 3.0.
Database
The database is Windows Access compatible. Data is saved
in a conventional tree format to facilitate ease of use.
The following figure illustrates the AVTS navigator Relay
tab when AVTS is opened for use. The Relay has been
expanded to illustrate the Organization.
The Organization is the method used to geographically
locate the relays installed in this database.
This example has the Organization tree by Region, then
Substation, then Line, then panel and finally the relay in
the panel. The relays installed are then listed under that
location. As part of the installation process of AVTS, the
default Organization tree comes with three levels and may
either be accepted or a new Organization tree may be
edited with up to five levels.
In addition to showing the location of the relays in your
system, it can also be used to look at the historical test
records of any individual relay. By clicking on the box, it
expands the selected relay’s test history.
Test Reports
Individual test results can be viewed by double clicking on
the desired result file. The test report can either be printed,
or exported to Microsoft Word for user customized report
generation using company logo, company standard format etc.