
Functions
2.6 Motor Protection
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
116
B) Above the thermal restarting limit:
1.
A startup brings the machine from load operation into a temperature range far above the thermal restarting
limit and the machine is stopped. The minimum inhibit time and the equilibrium time are started and
„66
TRIP“
is reported. The temperature cool-down below the restarting limit takes longer than
4310
and
T
MIN. INHIBIT
and
4304
T Equal
, so that the time passing until the temperature falls below the tem-
perature limit is the decisive factor for clearing the message
„66 TRIP“
. The thermal replica remains "fro-
zen" while the equilibrium time expires (see Figure 2-35, to the left).
2.
A startup brings the machine from load operation into a temperature range just above the thermal restarting
limit and the machine is stopped. The minimum inhibit time and the equilibrium time are started and
„66
TRIP“
is reported. Although the temperature soon falls below the restarting limit, the blocking
„66 TRIP“
is preserved until the equilibrium time and the minimum inhibit time have expired (see Figure 2-35, to the
right).
Figure 2-35
Starting up according to examples B.1 and B.2
Содержание SIPROTEC 7SJ61
Страница 368: ...Technical Data 4 22 Dimensions SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 368 ...
Страница 436: ...Appendix A 11 Measured Values SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 436 ...
Страница 438: ...Literature SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 438 ...
Страница 450: ...Glossary SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 450 ...
Страница 454: ...Index SIPROTEC 7SJ61 Manual C53000 G1140 C210 1 Release date 02 2008 454 ...