Siemens Reyrolle 7SR157 Check Synchronising Relay

Siemens Reyrolle 7SR157 Check Synchronising Relay Argus – 2xV

The Siemens Reyrolle 7SR157 Check Synchronising Relay Numerical Protection Relay is a trusted solution for overcurrent and earth fault protection. Moreover, designed with advanced numerical technology to ensure reliable performance in modern power systems. Ideal for distribution networks and industrial applications. Additionally, the Argus 7SR157 relay offers accurate fault detection, enhanced system safety, and easy integration with existing setups. The Reyrolle 7SR157 Argus is a combined check and system synchronising relay designed to carry out controlled closing of a circuit breaker. Specifically,  using measurements of the line and bus voltages. 

Monitoring Functions:

• Undervoltage detector?(25)
• Differential-voltage detector (25)
• Voltage Levels (live and dead status)(25)
• Close-circuit supervision (74)
• VT Fail (60)

Control Functions:

• Voltage trim (magnitude and phase) (25)
• System-split detector (25)
• Check synchronizing (25)
• Check synchronizing close guard (25)
• System synchronizing (25)
• Close on zero synchronizing (25)
• System-split lockout (25)
• Synchronizing bypass (25)

Features:

• The relay will prevent the closure of a circuit breaker if the differences in phase angle, slip frequency, or magnitude of the voltage fall outside prescribed limits.
• If the parameters are within limits, the relay will issue an output which can be used to close the circuit breaker directly or in conjunction with an auto-reclose scheme.
• Housed in a 4U high, size E4 case, the relay provides instrumentation and fault data with integrated input and output logic, data logging, and fault reports. Moreover, communication access to the relay functionality is via a front USB port for local PC connection or rear electrical RS485 port for remote Connection.

For industries in Mumbai, we provide authentic Siemens Reyrolle relays at competitive prices with fast delivery and expert technical support. As trusted local suppliers and distributors, we ensure genuine stock, reliable installation guidance, and dedicated after-sales service. Whether you need a single relay or bulk orders, the Siemens Reyrolle 7SR157 Check Synchronising Relay is available with quick turnaround across Mumbai and Maharashtra.