Catalogs >
Siemens Energy automation and smart grid >
7SR105 – Rho Motor protection relay

7SR105 – Rho Motor protection relay
2Pages

Catalog excerpts

Protecting your electrical assets... today and tomorrow The 7SR105 Rho motor protection relay is developed by using the latest generation of hardware technology. The device is housed in a 4U high, size 4 non draw-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. 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. 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. Key Features ■ 4 CT - 6 AC/DC Binary Inputs/6 Binary Outputs, 9 Tri Color Programmable LEDs ■ LCD 4 Line x 20 Characters ■ 6 RTD Input (Optional) ■ Front USB port + Rear RS485 port ■ Protocols - IEC60870-5-103, DNP3.0 or Modbus RTU

Open the catalog to page 1

NOTE: The use of functionality is dependent on external connections to the relay i.e. some functions are mutually exclusive Control functions Stall Protection Phase Unbalance Protection ¡ otor Start / Stop Control M Thermal Overload Start Protection ¡ G Open / CB Closed fascia key control C Instantaneous Overcurrent Protection Instantaneous Earth Fault Time Delayed Overcurrent Protection T ime Delayed Derived/Measured Earth Fault Protection Feature functions ¡ wo Settings Groups T ¡ assword Protection – 2 levels P ¡ ser Programmable Logic U ¡ elf Monitoring S Supervision functions ¡ ircuit...

Open the catalog to page 2