SIPROTEC 4 Devices
4-2 7SJ62 Manual
C53000-G1140-C121-1
4.1 General
The SIPROTEC
®
4 family is an innovative product series of numerical protective and
control devices with open communication interfaces for remote control and remote
setting, ergonomically designed control panels, and highly flexible functionality.
4.1.1 Protection and Control
The devices utilize numerical measuring techniques. Complete numerical signal pro-
cessing offers high measurement accuracy and long-term consistency, as well as re-
liable handling of harmonics and transients. Digital filtering techniques and dynamic
stabilization of measured values ensure the highest security in establishing the devic-
es’ correct responses. Device errors are recognized and quickly annunciated by inte-
grated self-monitoring routines. Failure of protection during a fault is therefore almost
entirely prevented.
The user can choose devices with separate protective and process control functions,
or select a solution that implements both requirements.
The following solutions are available:
q
Protection and control in separate devices,
q
Protective devices that provide the capability of control of a circuit breaker or prima-
ry switching equipment through a communication interface,
q
Devices with combined features that, in addition to protective functions, offer on-site
operation for several circuit breakers and primary switching equipment and exten-
sive process control functions.
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