SIPROTEC 7SK85
The SIPROTEC 7SK85 motor protection device is designed specifically to protect motors of all sizes.
Its modular structure and flexibility, coupled with the high-performing DIGSI 5 engineering tool, allow the SIPROTEC 5 7SK85 to offer future-oriented solutions for protection, control, automation, monitoring, and Power Quality (PQ) basic.
It is also available with EN 60079-14 or Verband der Elektrotechnik, Elektronik und Informationstechnik 0165, Part 1 (ATEX) certification for motors in explosive environments.
Enquiry about SIPROTEC 7SK85
Basic Features
- Motor protection for motors of all sizes
- Certification for use in explosive environments (EN 60079-14 or Verband der Elektrotechnik, Elektronik und Informationstechnik 0165, Part 1, ATEX)
- Motor protection functions: Startup time monitoring, thermal overload protection for stator and rotor, restart inhibit, unbalanced-load protection, and load-jam protection
- Stator and bearing temperature monitoring via temperature sensors with external resistance temperature detectors (RTD) unit
- Differential motor protection as fast short-circuit protection for motors of high power
- Sensitive ground-fault protection (non-directional and directional) to detect stator ground faults
- Directional and non-directional overcurrent protection (short-circuit protection) with additional functions
- Uses pulse detection method to detect transient ground faults
- Protects from overvoltage and undervoltage
- Arc protection
- Configurable power protection (active or reactive)
- Control, synchrocheck and switchgear interlocking protection
- Up to 4 pluggable communication modules, usable for different and redundant protocols (IEC 61850-8-1, IEC 61850-9-2 Client, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET I/O, and PROFINET I/O S2 redundancy)
- Reliable data transmission via PRP and HSR redundancy protocols
- Extensive cybersecurity functionality (e.g. as role-based access control (RBAC), protocolling security-related events, signed firmware or authenticated network access IEEE 802.1X)
- Provides simple, quick and secure access to the device data via a standard Web browser to display all information, diagnostic data, vector diagrams, single-line diagrams, and device display pages
- Captures operational measured variables and protection function measured values for the evaluation of the systems to support commissioning and analyze faults
- Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
- Enables powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
- Flexible adjustment of I/O quantity structure within the scope of the SIPROTEC 5 modular system