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SIEMENS 7UM85 Protection Relay
Product Overview
SIEMENS 7UM85 is a SIPROTEC 5 modular generator and motor protection relay designed for comprehensive protection, control, automation, and monitoring of generators, motors, transformers, and associated power system equipment. It is mainly used in power plants, substations, and industrial power distribution systems.
The 7UM85 provides flexible hardware configuration and advanced protection functions, supporting modern communication standards such as IEC 61850 for integration into digital substations and automation systems.
Specifications
- Brand: SIEMENS
- Series: SIPROTEC 5
- Model: 7UM85
- Product Type: Generator Protection Relay / Motor Protection Relay
- Application: Generator, Motor, Transformer & Power System Protection
- Protection Functions:
- Generator differential protection
- Overcurrent protection
- Voltage protection
- Frequency protection
- Reverse power protection
- Loss of excitation protection
- Negative sequence protection
- Thermal overload protection
- Synchronism check
- Communication Interfaces:
- IEC 61850 Ethernet
- PROFINET (option depending on configuration)
- IEC 60870-5-103
- Modbus (option depending on configuration)
- Inputs/Outputs:
- Configurable binary inputs and outputs
- Flexible analog measurement inputs
- Mounting: Panel mounting / 19-inch rack or flush mounting (depending on configuration)
- Platform: SIPROTEC 5 modular protection platform
Advantages & Features
- High-performance protection for generators and motors
- Modular hardware design for flexible configuration
- Supports advanced power system protection functions
- Provides reliable fault detection and fast tripping
- Integrated control, automation, and monitoring functions
- Supports IEC 61850 digital substation communication
- Suitable for conventional and renewable energy applications
- High reliability for critical power systems
Applications
- Power generation plants
- Hydroelectric generator protection
- Thermal power plant systems
- Industrial generator sets
- Large synchronous motors
- Transformer-generator protection systems
- Substation automation systems
- Energy and utility facilities
Precautions
- Confirm the exact hardware configuration before replacement
- Verify auxiliary power supply voltage
- Check CT/PT wiring and protection settings
- Ensure correct communication protocol configuration
- Backup relay parameters before replacement
- Protection settings should only be modified by qualified personnel
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