Sel SEL-DTA2, Инструкция по эксплуатации

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5.4
SEL-DTA2 Instruction Manual
Date Code 20020329
Maintenance and Testing
Introduction
Step 10. Press the “FAULTS” switch. Since no faults have yet been
reported to the SEL-DTA2 by the relay, the instrument displays
the following message:
When the switch is released, the display reverts to its original
status.
Step 11. The SEL-DTA2 is shipped with demonstration settings; inspect
these with the SHOWSET command. Type SHOWSET
<ENTER> to display the settings:
=
>SHOWSET
ID
=
SEL-DTA Display/Transducer Adapter
TIME1
=
0
LOCK
=
300.0 RESET
=
120
MINW
=
-10.0 MAXW
=
100.0
QUA1
=
VAB MIN1
=
-250 MAX1
=
500.0
QUA2
=
IA MIN2
=
0.0 MAX2
=
1200.0
QUA3
=
IB MIN3
=
0.0 MAX3
=
1200.0
QUA4
=
IC MIN4
=
0.0 MAX4
=
1200.0
QUA5
=
P MIN5
=
0.0 MAX5
=
-200.0
QUA6
=
P MIN6
=
0.0 MAX6
=
200.0
QUA7
=
Q MIN7
=
-200.0 MAX7
=
200.0
QUA8
=
FL MIN8
=
0.0 MAX8
=
100.0
The SHOWSET command description includes a detailed
explanation of SEL-DTA2 settings. Briefly, the first line shows
the SEL-DTA2 identification string; the second shows the
timeout for Port 1. The third line shows the contact and analog
output fault lockout period and automatic reset timeout, while
the fourth indicates the fault window settings. The remaining
lines contain measured quantity and scaling information for the
eight analog output channels.
Step 12. Turn the relay power off and connect a source of three-phase
voltages and currents to the relay inputs. Set up a typical set of
test currents and voltages at the test source outputs.
Step 13. Turn the relay power back on.
Step 14. Press the “METER” switch and verify correspondence of
displayed data and test quantities. Using an ammeter and
voltmeter, make sure the currents and voltages delivered to the
analog outputs agree with displayed data. Refer to
Section 1:
Introduction for pin configuration information and output
quantity equations.
Step 15. Set up test quantities corresponding to a forward fault. Shortly
after the relay elements respond to the fault condition, the
display shows a message of the following format:
The contents of the second line vary according to test
quantities. Faults outside the set fault window are not displayed
or maintained in the fault history.
FAULT HISTORY EMPTY
P=0.00 Q=0.00
NEW FAULT
01 01/02/90 22:33:51.812 1BG 74.54