Thermal protection relay SIPROTEC 7 series

powertemperaturefor electric motors

The SIPROTEC 7SK82 and the SIPROTEC 7SK85 motor protection have been designed specifically for the protection of motors of all sizes. For the protection of generators and power-plant units the SIPROTEC 7UM85 generator protection device has been designed specifically. With its flexibility and the high performance DIGSI 5 engineering tool, the devices offer future-oriented system solutions with high investment security and low operating costs. For machines in explosive environments, the SIPROTEC 5 motor and generator protection devices are also available with EN 60079-14 or Verband der Elektrotechnik, Elektronik und Informationstechnik 0165, Part 1 (ATEX) certification. Features Main function: •Motor protection for small to medium-sized motors (100 KW to 2 MW). •Certification for use in explosive environments (EN 60079-14 or Verband der Elektrotechnik, Elektronik und Informationstechnik 0165, Part 1, ATEX) Inputs and outputs: •4 current transformers, •4 voltage transformers (optional), •11 or 23 binary inputs, •9 or 16 binary outputs, •12 RTD inputs (optional) Hardware flexibility: •Different hardware quantity structures for binary inputs and outputs are available in the 1/3 base module. Adding 1/6 expansion modules is not possible; available with large or small display. Functions DIGSI 5 permits all functions to be configured and combined as required. •Motor protection functions: Startup time monitoring, thermal overload protection for stator and rotor, restart inhibit, unbalanced-load protection, load-jam protection •Stator and bearing temperature monitoring via temperature sensors with optional temperature inputs or with external RTD unit.