Siemens Reyrolle 7SR157 Check Synchronising Relay Argus – 2xV
The Siemens Reyrolle 7SR157 Argus – 2xV is a numerical check and synchronising relay engineered for reliable circuit breaker control and power system protection. It provides overcurrent and earth fault protection with precision voltage measurement to ensure controlled synchronization between line and bus voltages. Designed for modern distribution and industrial networks, it enhances system safety, operational accuracy, and efficiency while offering easy integration with existing installations
Technical Specifications
Model: Reyrolle 7SR157 Argus – 2xV
Type: Numerical Check and Synchronising Relay
Protection: Overcurrent and Earth Fault
Case: 4U high, Size E4
Power Supply: Universal (AC/DC)
Communication: Front USB port and Rear RS485 port (MODBUS RTU / IEC 60870-5-103)
Functions: Integrated input/output logic, data logging, and fault reporting
Application: Distribution networks, industrial power systems, and substations
Monitoring Functions:
Undervoltage Detector (25) • Differential-Voltage Detector (25) • Voltage Level (Live/Dead) (25) • Close-Circuit Supervision (74) • VT Fail (60)
Control Functions:
Voltage Trim (Magnitude & Phase) (25) • System-Split Detector (25) • Check Synchronising (25) • Check Synchronising Close Guard (25) • System Synchronising (25) • Close on Zero Synchronising (25) • System-Split Lockout (25) • Synchronising Bypass (25)
Features:
Prevents circuit breaker closing if voltage, phase, or frequency exceed limits
Provides accurate synchronization and stable performance
Integrated data logging and fault monitoring
Local and remote communication via USB & RS485
Supplied and supported locally in Mumbai with fast delivery and technical assistance
Type: Numerical Check and Synchronising Relay
Protection: Overcurrent and Earth Fault
Case: 4U high, Size E4
Power Supply: Universal (AC/DC)
Communication: Front USB port and Rear RS485 port (MODBUS RTU / IEC 60870-5-103)
Functions: Integrated input/output logic, data logging, and fault reporting
Application: Distribution networks, industrial power systems, and substations
Monitoring Functions:
Undervoltage Detector (25) • Differential-Voltage Detector (25) • Voltage Level (Live/Dead) (25) • Close-Circuit Supervision (74) • VT Fail (60)
Control Functions:
Voltage Trim (Magnitude & Phase) (25) • System-Split Detector (25) • Check Synchronising (25) • Check Synchronising Close Guard (25) • System Synchronising (25) • Close on Zero Synchronising (25) • System-Split Lockout (25) • Synchronising Bypass (25)
Features:
Prevents circuit breaker closing if voltage, phase, or frequency exceed limits
Provides accurate synchronization and stable performance
Integrated data logging and fault monitoring
Local and remote communication via USB & RS485
Supplied and supported locally in Mumbai with fast delivery and technical assistance
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