Universal Protection, Control and Automation Device
SIPROTEC 5 base module with large display
The SIPROTEC 7SK82 motor protection has been designed particularly for a cost-optimized and compact utilization of small to medium-sized motors. With its flexibility and the powerful DIGSI 5 engineering tool, SIPROTEC 7SK82 offers future-oriented system solutions with high investment security and low operating costs.
For motors in explosive environments, the SIPROTEC 7SK82 is also available with EN 60079-14 or Verband der Elektrotechnik, Elektronik und Informationstechnik 0165, Part 1 (ATEX) certification.
Motor protection for small to medium-sized motors (100 KW to 2 MW)
Inputs and outputs:
4 current transformers, 4 voltage transformers(optional), 11 or 23 binary inputs, 9 or16 binary outputs, 12 RTD inputs (optional)
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.
Width of housing:
1/3 × 19 inches
Compact and low-cost motor protection
Safety due to powerful protection functions
Data security and transparency over the entire lifecycle of the plant, saving time and money
Purposeful and easy handling of devices and software thanks to a user-friendly design
Increased reliability and quality of the engineering process
Cyber security in accordance with NERC CIP and BDEW White- paper requirements
Highest availability even under extreme environmental conditions by “conformal coating“ of electronic boards
Powerful communication components warrant safe and effective solutions
Full compatibility between IEC 61850 Editions 1 and 2
High investment security and low operating costs due to future-oriented system solutions.
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.
Sensitive ground-fault protection (non-directional, directional) to detect stator ground faults
Directional and non-directional overcurrent protection (short- circuit protection) with additional functions
Detection of ground faults of any type in compensated or isolated electrical power systems using the following func-tions: 3I0>, V0>, fleeting contact, cos φ, sin φ, harmonic, dir. Detection of intermittent ground faults and admittance
Ground fault detection using the pulse detection method
Overvoltage and undervoltage protection
Power protection, configurable as active or reactive power protection
Detection of current and voltage signals up to the 50th harmonic with high accuracy for selected protectionfunctions (such as thermal overload protection) and operational measured values
Control, synchrocheck and switchgear interlocking protection
Graphical logic editor to create powerful automation functions in the device
Single line representation in small or large display
Integrated electrical Ethernet RJ45 for DIGSI 5 and IEC 61850 (reporting and GOOSE)
2 optional pluggable communication modules, usable for different and redundant protocols (IEC 61850,IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO)
Reliable data transmission via PRP and HSR redundancy protocols
Extensive cyber security functionality, such as role-based access control (RBAC), protocolling security-related events or signed firmware
Simple, quick and secure access to device data via a standard Web browser – without additional software
Secure serial protection data communication, also over great distances and all available physical media (optical fiber, two-wire connections and communication networks)
Capturing operational measured variables and protection function measured values for the evaluation of the systems,to support commissioning, and to analyze faults
Integrated RTD inputs (optional) for thermal motor monitoring
Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
Powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
Auxiliary functions for simple tests and commissioning.
Protection against thermal overload of the stator from over- current, cooling problems or pollution
Protection against thermal overload of the rotor during startup due to frequent startups, excessively long startups orblocked rotor
Monitoring for voltage unbalance or phase outage
Monitoring the thermal state and the bearing temperatures with temperature measurement
Detection of idling drives of pumps and compressors, for example
Detection of ground faults in the motor
Protection against motor short circuits
Protection against instability due to undervoltage.
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