Siemens offers a complete spectrum of multifunctional, numerical relays for all applications in the field of network and machine protection. Uniform design and electromagnetic-interference free construction in metal housings with conventional connection terminals in accordance with public utility requirements guarantee simple system design and usage just as with conventional relays. Numerical measurement techniques ensure precise operation and necessitate less maintenance thanks to their continuous self-monitoring capability. The integration of additional protection and other functions, such as real-time operational measurements, event and fault recording, all in one unit economizes on space, design and wiring costs.
State of the art
Mechanical and solid-state (static) relays have been almost completely
phased out of out production because numerical relays are now preferred
by the users due to their decisive advantages:
- Compact design and lower cost due to integration of many functions into one relay
- High availability even with less maintenance due to integral self-monitoring
- No drift (aging) of measuring characteristics due to fully numerical processing
- High measuring accuracy due to digital filtering and optimized measuring algorithms
- Many integrated add-on functions, for example, for load-monitoring and event/fault recording
- Easy and secure read-out of information via serial interfaces with a PC, locally or remotely
- Possibility to communicate with higher level control systems
Modern protection management
All the functions, for example, of a line protection scheme can be incorporated
in one unit :
- Distance protection with associated add-on and monitoring functions
- Universal teleprotection interface
- Autoreclose and synchronism check
- Distance to fault
- Fault currents and voltages
- Relay operation data (fault detector pickup, operating times etc)
- Set values
- Line load data (kV, A, MW, kVAr)
The whole SIPROTEC product family for
line, motor and generator protection offers you an integrated solution
which starts with extensive protection and control functionality, enthuses
with flexible communication possibilities and convinces by means of one
single operation program DIGSI for all SIPROTEC protection relays.The
whole SIPROTEC product family for line, motor and generator protection
offers you an integrated solution which starts with extensive protection
and control functionality, enthuses with flexible communication possibilities
and convinces by means of one single operation program DIGSI for all SIPROTEC
protection relays.
