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. Additionally, 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.

• Provides stator ground-fault protection with 90% non-directional or directional detection, 100% third-harmonic protection, and full 100% protection using 20-Hz voltage interference.

• Supports rotor ground-fault protection using ground-current or ground-resistance monitoring methods.

• Includes high-precision reverse-power protection and universal power protection.

• Offers underexcitation and overexcitation protection to maintain generator stability.

• Detects unbalanced load conditions and protects equipment from damage.

• Provides overload protection and temperature monitoring through an external RTD unit such as PT100 sensors.

• Supports overload protection up to the 50th harmonic and temperature monitoring via a Thermo box.

• Includes out-of-step protection to maintain system stability during severe disturbances.

• Provides rotor and stator overload protection with coolant temperature (cold gas) consideration.

• Supports power plant decoupling protection for safe grid disconnection.

• Includes shaft-current protection, especially useful in hydropower applications.

• Offers universal overvoltage and undervoltage protection with multiple measurement methods.

• Provides overfrequency, underfrequency, and frequency-change protection, including dwell-time monitoring within frequency bands.

• Supports network decoupling protection with voltage, frequency, reactive-power undervoltage (QU), and vector-jump protection.

• Detects incorrect circuit-breaker operation through switching protection.

• Includes circuit-breaker failure protection and circuit-breaker reignition monitoring.

• Provides a single-channel synchronization function for generator parallel operation with speed and voltage adjustment commands.

• Features a graphical logic editor for creating advanced automation functions within the device.

• Includes integrated Ethernet RJ45 ports for DIGSI 5 engineering and IEC 61850 communication with reporting and GOOSE messaging.

• Supports optional pluggable communication modules for IEC 61850, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3, and PROFINET IO.

• Enables secure serial protection data communication over optical fiber, two-wire connections, and communication networks.

• Supports PRP and HSR redundancy protocols for reliable communication.

• Provides advanced cybersecurity features aligned with NERC CIP and BDWE recommendations.

• Functions as a Phasor Measurement Unit (PMU) using the IEEE C37.118 protocol.

• Supports precise time synchronization through IEEE 1588.

SIPROTEC 7UM85 Motor & Generator Protection Relay

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.