Reyrolle 7SR105 Rho - Motor and Generator Protection

4XI

Reyrolle 7SR105 Rho motor protection relay is a numerical protection relay intended for use in the motor protection applications. It provides a highly comprehensive functional software package with a range of integral application functions aimed at reducing installation, wiring, and engineering time.

Features

The device is housed in a 4U high, size 4 non-withdrawable case and these relays provide protection, monitoring, instrumentation, and metering with integrated b and output logic, data logging and fault reports. Communication access to the relay functionality is via a front USB port for local PC connection or rear electrical RS485 port for remote connection. 

A wide range of measured values can be viewed on the front LCD or remoby via the communications channel. The integrated control feature allows the safe operation of a motor and monitoring its start and stop operations. 

• Optional RTD bs
• Cold load settings
• Two settings groups
• Password protection
• Self-monitoring
• Circuit breaker trip counterFault, event and waveb records

Product homepage - downloads from the internet (catalogs, certificates, firmware, manuals,...)

www.siemens.com/7SR105

Protection Functions

• Stall Protection (14)
• Undercurrent (37)
• Current Unbalance Protection (46)
• Phase Reversal (46Ph Rev)
• Start Protection (48/66)
• Motor Thermal Overload (49R)
• Time-overcurrent Protection (50/51)
• Earth Fault (50/51G/N)
• Backspin Protection (81B)
• Temperature Inputs (RTD)

Supervision Functions

• Circuit Breaker Fail (50BF)
• CT Supervision (60CTS)
• Trip Circuit Supervision (74T/CCS)

Monitoring Functions

• Instrumentation