7UM61 Generator And Motor Protection Relay
The SIPROTEC 4 7UM61 protection relays can do more than just protect. They also offer numerous additional functions. Be it earth faults, short-circuits, overloads, over voltage, over frequency or under frequency, protection relays assure continued operation of power stations.The SIPROTEC 4 7UM61 protection relay is a compact unit which has been specially developed and designed for the protection of small and medium-sized generators.They integrate all the necessary protection functions and are particularly suited for the protection of:-Hydro and pumped-storage generators-Co-generation stations-Private power stations using regenerative energy sources such as wind or biogases-Diesel generator stations-Gas-turbine power stations-Industrial power stations-Conventional steam power stationsThe device can also be used for protecting synchronous and asynchronous motors.The integrated programmable logic functions (continuous function chart CFC) offer the user high flexibility so that adjustments can easily be made to the varying power station requirements, on the basis of special system conditions.The flexible communication interfaces are open for modern communication architectures with the control system.
Stator earth-fault protection
Sensitive earth-fault protection
Stator overload protection
Overcurrent-time protection (either definite-time or inverse-time)
Definite-time overcurrent-time protection, directional
Undervoltage and overvoltage protection
Underfrequency and overfrequency protection
Reverse power protection
Overexcitation protection
External trip coupling
STANDARD VERSION - SCOPE OF BASIC VERSION PLUS
Forward-power protection
Underexcitation protection
Negative-sequence protection
Breaker failure protection
FULL VERSION - SCOPE OF STANDARD VERSION PLUS:
Inadverdent energization protection
100%- stator earth-fault protection with 3rd harmonic
Impedance protection
ASYNCHRONOUS MOTOR - SCOPE OF STANDARD VERSION PLUS
Motor starting time supervision
Restart inhibit (without underexcitation protection)
MONITORING FUNCTIONS
Trip circuit supervision
Fuse failure monitor
Operational measured values V, I, f,…
Every metering value Wp,Wq
Time metering of operation hours
Self-supervision of relay
8 oscillographic fault records
COMMUNICATION INTERFACES
System interface
- IEC 60870-5-103 protocol
- PROFIBUS-DP
- MODBUS RTU
- DNP 3.0