Siemens Siprotec 5 7UM85 Motor & Generator Protection Relays

The generator protection device, SIPROTEC 7UM85 Motor & Generator Protection relay is especially designed for the protection of generators and power units. It contains all required main protection functions and numerous additional protection and monitoring functions. Thanks to its modularity and flexibility and the powerful engineering tool DIGSI 5, SIPROTEC 7UM85 devices offer future-oriented system solutions with high investment security and low operating costs. Main function: Typical generator protection functions Inputs and outputs:-3 predefined standard variants with 8 current transformers, 8 voltage transformers, 7 to 15 binary inputs, 9 to 20 binary outputs, 2 further standard variants with additional 4 transducers are in preparation. Hardware flexibility: Flexible, adaptable and expandable I/O quantity structure within the scope of the modular SIPROTEC 5 building blocks, 1/6 expansion modules can be added Available with large or small display or without display Width of housing:1/3 19 inch to 2/1 19 inch

With DIGSI 5, all functions can be configured freely according to the requirements

• Stator ground-fault protection (90% non-directional or directional, 100% with 3rd harmonic, real 100% protection with 20-Hz voltage interference)
• Rotor ground-fault protection with different measuring methods (ground-current or ground-resistance Monitoring)
• High-precision reverse-power protection and universal power protection
• Underexcitation and overexcitation protection
• Unbalanced-load protection
• Overload protection and temperature monitoring via external RTD unit (with PT 100, for example)
• Overload protection up to the 50th harmonic and temperature monitoring via Thermo box (e.g. with PT 100)
• Out-of-Step Protection
• Rotor and stator overload protection with cold gas consideration (coolant temperature)
• Power plant decoupling protection
• Shaft-current protection (in particular with hydropower applications)
• Universal overvoltage and undervoltage protection with different measuring methods
• Overfrequency and underfrequency protection, frequency change protection and monitoring of dwell time in frequency bands as turbine protection (protection against abnormal frequencies)
• Protection functions for network decoupling (voltage and frequency protection, directional reactive-power undervoltage protection (QU protection and vector jump protection))
• Switching protection to detect incorrect activation of the circuit breaker
• Circuit breaker failure protection
• Circuit breaker reignition monitoring
• Single-channel parallel connection function (synchronization) with adjustment commands for rotational speed (frequency) and voltage
• Graphical logic editor to create powerful automation functions in the device
• Integrated electrical Ethernet RJ45 for DIGSI 5 and IEC 61850 (reporting and GOOSE)
• Optional pluggable communication modules, usable for different and redundant protocols (IEC 61850, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO)
• Secure serial protection data communication, even over great distances and all available physical media (optical fiber cable, 2- wire connections and communication Networks)
• Redundancy protocols PRP and HSR
• Cyber security to NERC CIP and BDWE Whitepaper requirements
• Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
• Time synchronization with IEEE 1588
• Capturing operational measured variables and protection function measured values to evaluate the plant state, to support commissioning, and to analyze faults
• Powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
• Auxiliary functions for easy tests and commissioning
• Flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system

SIPROTEC 5 is part of the new generation of incomparable modular, flexible, and intelligent digital field devices. With modularly designed hardware and software and its high-performance DIGSI 5 engineering tool, the SIPROTEC 5 product family of field devices are perfect for protection, control, monitoring, and measuring applications in electrical energy systems. SIPROTEC 5 offers a wide product range with modular elements for every application and requirement.