Siemens Reyrolle 7SR158 Voltage & Frequency Protection Relay
The Siemens Reyrolle 7SR158 Argus is a numerical voltage and frequency protection relay designed for connection to voltage transformers. It provides under/over-voltage and frequency protection, rate of change detection, and voltage vector shift monitoring. The relay includes data storage, programmable logic, and communication interfaces for SCADA integration, ensuring reliability and advanced functionality in modern electrical systems
Technical Specifications
Model: 7SR158 Argus – 3xV
Protection Functions:
• Under/Over Voltage (27/59)
• Under/Over Frequency (81)
• Rate of Change of Frequency (81R)
• Negative Phase Sequence Voltage
• Neutral Voltage Displacement
• Voltage Vector Shift (78)
Supervision Functions:
• Trip and Close Circuit Supervision
• Lockout
Monitoring Functions:
• Primary/Secondary Line & Phase Voltages
• Historical Demand Record
• PPS, NPS & ZPS Voltage
Additional Features:
• Four Setting Groups
• Two-Level Password Protection
• Self-Monitoring
• Fault, Event & Waveform Records
• Programmable Logic & Virtual I/O
• Front USB & Rear RS485 Communication (MODBUS RTU / IEC 60870-5-103 / DNP 3.0)
• Size: E4 case (3 voltage inputs, 6 binary inputs, 8 binary outputs)
Protection Functions:
• Under/Over Voltage (27/59)
• Under/Over Frequency (81)
• Rate of Change of Frequency (81R)
• Negative Phase Sequence Voltage
• Neutral Voltage Displacement
• Voltage Vector Shift (78)
Supervision Functions:
• Trip and Close Circuit Supervision
• Lockout
Monitoring Functions:
• Primary/Secondary Line & Phase Voltages
• Historical Demand Record
• PPS, NPS & ZPS Voltage
Additional Features:
• Four Setting Groups
• Two-Level Password Protection
• Self-Monitoring
• Fault, Event & Waveform Records
• Programmable Logic & Virtual I/O
• Front USB & Rear RS485 Communication (MODBUS RTU / IEC 60870-5-103 / DNP 3.0)
• Size: E4 case (3 voltage inputs, 6 binary inputs, 8 binary outputs)
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