Siemens Siprotec 4 SIPROTEC 7UM61 Protection Relay
The SIPROTEC 4 7UM61 is a multifunctional protection relay designed for small and medium-sized generators. It provides comprehensive protection against earth faults, short-circuits, overloads, overvoltage, and frequency deviations, while also offering automation and monitoring features
Technical Specifications
Stator earth-fault and overload protection
Directional and inverse-time overcurrent protection
Over/undervoltage and over/underfrequency protection
Reverse power and overexcitation protection
Forward power, underexcitation, and negative-sequence protection
Breaker failure and inadvertent energization protection
100% stator earth-fault protection with 3rd harmonic
Impedance and motor protection functions
Communication interfaces: IEC 60870-5-103, PROFIBUS-DP, MODBUS RTU, DNP 3.0
Monitoring: trip circuit, fuse failure, self-supervision, oscillographic fault records
Programmable logic (CFC) and DIGSI 4 engineering compatibility
Directional and inverse-time overcurrent protection
Over/undervoltage and over/underfrequency protection
Reverse power and overexcitation protection
Forward power, underexcitation, and negative-sequence protection
Breaker failure and inadvertent energization protection
100% stator earth-fault protection with 3rd harmonic
Impedance and motor protection functions
Communication interfaces: IEC 60870-5-103, PROFIBUS-DP, MODBUS RTU, DNP 3.0
Monitoring: trip circuit, fuse failure, self-supervision, oscillographic fault records
Programmable logic (CFC) and DIGSI 4 engineering compatibility
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