11-30
Testing and Troubleshooting
Date Code 20010731
SEL-352-1, -2 Instruction Manual
programmed in Step 1. View the SER using the
SER
command. These time
stamps will also verify the FFpu and FPpu timers. The FFpu and FPpu times are
the times between the assertion of the current and the assertion of FOBF and
FOPF, respectively.
Note:
Because this test involves simultaneous application of voltage and current to the
relay, the breaker resistor thermal protection elements can acquire energy. To
reset resistor thermal model energies to zero, type
HEA R <ENTER>
after each
phase test.
F
LASHOVER
D
ETECTION
L
OGIC
, S
CHEME
2 L
OGIC
T
EST
Purpose: Verify Scheme 2 for current through an open breaker logic (Reference: Figure 3.22).
Method: 1. While the relay can use two different flashover detection schemes, only one is
enabled at a time. Select Scheme 2 by setting FOLOG = 2 in the relay setting
group. Using the
SET
command, set an output to close when the FOBF element
asserts, and set the SER to trigger for the elements listed below. Verify the
settings with the
SHO
command, and verify the
SHO G
command for TRIPA,
MCLOSE, CLOSE and 52AA.
Setting
Elements
FOLOG, FFpu,
FPpu, 59L, 50LD,
TRIPA, CLOSE,
MCLOSE, 52AA
50LD, X59HA, FOBF, FOPF, CLOSE,
MCLOSE, TRIPA, 52AA
2. Connect an external timer, and set it to start when you apply A-phase current and
stop when the programmable output you set in Step 1 asserts.
3. Apply 67 V, which should be higher than the 59L setting, to the X-side voltage
inputs of the phase under test.
4. Turn the voltage source off (0.0 V) as you apply phase current above the 50LD
setting. This action should start the external timer.
5. Shortly after you apply A-phase current, the programmable output contact set in
Step 1 should close, indicating FOBF bit assertion. This action should stop the
external timer. Record the timer reading. It should be close to the FFpu setting.
6. Shut off A-phase current.
7. Repeat Steps 3, 4, and 6 four times. During the first repetition, assert the TRIPA
input before applying phase voltage. During the second repetition, assert the
CLOSE input (but not the TRIP input) before applying phase voltage. During the
third repetition, assert the MCLOSE input, with no other inputs asserted, before
applying phase voltage. On the fourth repetition, assert the 52AA input (but no
other inputs) before applying phase voltage. In these repetitions, the relay should
not assert the FOBF bit.
Содержание SEL-352-1
Страница 8: ......
Страница 10: ......
Страница 12: ......
Страница 30: ......
Страница 68: ......
Страница 186: ......
Страница 292: ......
Страница 300: ...9 8 Front Panel Interface Date Code 20010731 SEL 352 1 2 Instruction Manual Figure 9 3 Front Panel Operation Map ...
Страница 302: ......
Страница 368: ......
Страница 370: ......
Страница 374: ......
Страница 380: ......
Страница 382: ......
Страница 384: ......
Страница 386: ......
Страница 396: ......
Страница 404: ......
Страница 422: ......
Страница 442: ......