Siemens Motor Protection Relay

Reyrolle 7SR105 Siemens Motor Protection Relay

Reyrolle 7SR105 Rho Siemens Motor Protection Relay is a numerical protection relay intended for use in 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.The Reyrolle 7SR105 platform is a compact motor protection relay in a Non draw out case with 6BI/Os, Serial interface, RTD inputs with Current based motor protection algorithms – simplest and comprehensive motor protection relay.The device is housed in a 4U high, size 4 non drawn-out case and these relays provide protection, monitoring, instrumentation, and metering with integrated input 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 remotely via the communications channel. The integrated control feature allows the safe operation of a motor and monitoring its start and stop operations.

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Features of Siemens Motor Protection Relay

These relays offer protection, monitoring, instrumentation, and metering with integrated input and output circuitry, data logging, and fault reports. The device is contained in a 4U high, size 4 non-withdrawable cabinet. A rear electrical RS485 port allows for a distant connection, or a front USB port allows for a local PC connection to access the relay capability.

Via the communications channel, a broad variety of measured values can be seen remotely or on the front LCD. A motor can be used safely and its start and stop actions may be monitored thanks to the integrated control feature.

  • RTD inputs that are optional
  • Settings for cold loads
  • Two configuration groupings
  • password security
  • Self-awareness
  • Trip counter for circuit breakers
  • Event, waveform, and fault logs

Specification of Siemens Motor Protection Relay

Product Family

(Auxiliary powered)

 Motor Protection Relay
Case and LEDs Non Draw-out Polycarbonate case (Size 4 standard, Non Draw-out design), 10 LEDs
Measuring Inputs

(Current)

 1 A/5 A, 50 Hz/60 Hz
Auxiliary Voltage 60 V – 240 V AC/DC

24 V – 60 V DC
Communication Default front communication port (IEC 60870-5-103 or MODBUS RTU)

Rear port: RS485 (optional – IEC 60870-5-103 or Modbus RTU or DNP 3.0)
Protection Functions 14, 37, 48/66, 50, 50G/N, 51, 51G/N, 49, 46
Supervision and control functions 74 T/CCS, 86, 50 BCL, 81 B, 46 Ph Rev, 50BF, TEMP
Binary Input and Binary Output 6 BI and 6 BO (2 changeover contact) Threshold voltage

–  44 V AC/DC with 60 V – 240 V AC/DC power supply version

–  19 V DC with 24 V – 60 V DC power supply version
Temperature Inputs 6 inputs

Measuring Range -50ºC to +250ºC

 

Design Flush mounting, Non Draw-out Polycarbonate moulded case
Enclosure IP 54 (front panel)

IP 20 Protection for terminals (rear side) Depth is 199 mm
Weight 1.6 kgs (appx)

 

Current Inputs 12 position (Terminal X5), M4 Screw-type Barrier Terminal block suitable for 2.5 mm2/4 mm2 cable
Auxiliary Supply 3 position (Terminal X3), M3 screw-type plug-in terminals suitable for

2.5 mm2 cable
Rear Communication Port 4 position (Terminal X2), M2 screw-type plug-in terminals suitable for

1.5 mm2 cable
Front Communication Port USB, Type B
Binary Input 6 or 12 position (Terminal X1), M3 screw-type plug-in terminals suitable for 2.5 mm2 cable
Binary Output 8 or 14 position (Terminal X4), M3 screw-type plug-in terminals suitable for 2.5 mm2 cable
Temperature Inputs 18 position (Terminal X6, X7), M2 screw-type plug-in terminals suitable for 1.5 mm2 shielded cable

 

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