SIEMENS 7SR105 REYROLLE MOTOR PROTECTION RELAY

Product Description

Siemens 7SR105 Reyrolle Motor Protection Relay

Reyrolle 7SR105 Rho motor protection relay is a numericalprotection relay intended for use in the motor protection applications. Itprovides a highly comprehensive functional software package with a range ofintegral application functions aimed at reducing installation, wiring, andengineering time.The Reyrolle 7SR105 platform is a compact motor protectionrelay in a Non draw out case with 6BI/Os, Serial interface, RTD inputs withCurrent based motor protection algorithms - simplest and comprehensive motorprotection relay.The device is housed in a 4U high, size 4 non drawn-out caseand these relays provide protection, monitoring, instrumentation, and meteringwith integrated input and output logic, data logging and fault reports.Communication access to the relay functionality is via a front USB port forlocal PC connection or rear electrical RS485 port for remote connection.A widerange of measured values can be viewed on the front LCD or remotely via thecommunications channel. The integrated control feature allows the safeoperation of a motor and monitoring its start and stop operations.

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

MAIN FEATURES

• Optional RTD inputs
• Cold Load Settings
• Two Settings Groups
• Password Protection
• Self Monitoring
• Circuit Breaker Trip Counter
• Fault, event and waveform records