
Introduction
1.3 Characteristics
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
26
Flexible Protective Functions
• Up to 20 protection functions which can be set individually to operate in three-phase or single-phase mode;
• Any calculated or directly measured value can be evaluated on principle;
• Standard protection logic function with definite time characteristic;
• Internal and configurable pickup and dropout delay;
• Modifiable message texts.
RTD-Boxes
• Detection of any ambient temperatures or coolant temperatures by means of RTD-Boxes and external tem-
perature sensors.
Phase Rotation
• Selectable ABC or ACB by setting (static) or binary input (dynamic).
Circuit-Breaker Maintenance
• Statistical methods to help adjust maintenance intervals for CB contacts according to their actual wear;
• several independent subfunctions have been implemented (
Σ
I
-procedure,
Σ
I
x
-procedure, 2P-procedure
and
I
2
t-procedure);
• Acquisition and conditioning of measured values for all subfunctions operates phase-selective using one
procedure-specific threshold per subfunction.
User-defined Functions
• Internal and external signals can be logically combined to establish user-defined logic functions;
• All common Boolean operations are available for programming (AND, OR, NOT, Exclusive OR, etc.);
• Time delays and limit value interrogation;
• Processing of measured values, including zero suppression, adding a knee curve for a transducer input, and
live-zero monitoring;
Breaker Control
• Circuit breakers can be opened and closed via specific process control keys (models with graphic displays
only), the programmable function keys on the front panel, via the system interface (e.g. by SICAM or
SCADA), or via the front PC interface using a personal computer with DIGSI);
• Circuit breakers are monitored via the breaker auxiliary contacts;
• Plausibility monitoring of the circuit breaker position and check of interlocking conditions.
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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 ...