Siemens SIPROTEC 5 7SK82 Motor Protection Relay
Siemens SIPROTEC 5 7SK82 Motor Protection Relay Suppliers,Exporters in India
ARP IMPEX is a supplier and exporter of Siemens SIPROTEC 5 7SK82 Motor Protection Relays in India. We handle requirements for motor control panels, medium-voltage switchgear, industrial plants, pumping stations, retrofit projects and replacement of existing Siemens motor relays.
The Siemens SIPROTEC 7SK82 is a compact numerical relay for the protection and control of small and medium-sized motors. Siemens specifies the relay for motor applications from approximately 100 kW to 2 MW. It is commonly used where a basic overload relay cannot provide enough protection for an important pump, compressor, conveyor, fan or process motor.
The relay monitors the motor during starting and normal operation. It can detect thermal overload, excessive starting time, locked rotor, repeated starts, current unbalance, short circuit, earth fault and loss of load. These functions help reduce motor damage and unexpected plant shutdowns.
Optional voltage inputs allow the 7SK82 to cover undervoltage, voltage unbalance, power-related and additional network-protection functions. Temperature monitoring is also available through optional RTD inputs or an external temperature-monitoring unit.
ATEX-certified versions are available for motors operating in areas where an explosive atmosphere may be present. The required certification and complete Siemens article number should always be confirmed before quotation.
The relay works with Siemens DIGSI 5 for settings, logic and commissioning. IEC 61850 communication is available through the integrated Ethernet interface, while optional communication modules can support other plant and substation communication requirements.
For the Siemens SIPROTEC 7SK82 price, availability or export quotation, share the complete Siemens article number, required quantity and destination country.
Technical Specifications
- Brand: Siemens
- Product family: SIPROTEC 5
- Model: 7SK82
- Product type: Numerical motor protection relay
- Main application: Protection and control of small and medium-sized motors
- Typical motor range: Approximately 100 kW to 2 MW
- Current inputs: Four CT inputs
Voltage inputs: Four optional VT inputs - Binary inputs: 11 or 23, depending on the hardware version
- Binary outputs: 9 or 16, depending on the hardware version
- Temperature monitoring: Optional integrated RTD inputs or external RTD unit
- Rated frequency: 50/60 Hz
Display: Small or large display, depending on the version - Engineering software: Siemens DIGSI 5
- Communication: Ethernet with optional communication modules
- IEC 61850: Available for substation and plant communication
- Control functions: Motor start and stop control, switchgear interlocking and programmable logic
- Recording: Fault, event and disturbance records
- Certification: ATEX-certified variants available
- Housing: Compact SIPROTEC 5 base-module construction
The current and voltage inputs, binary contacts, display, temperature channels, certification and communication interfaces depend on the full Siemens MLFB or article number.
Main Motor Protection Functions
Depending on the selected configuration, the Siemens SIPROTEC 7SK82 can provide:
- Thermal overload protection for the motor stator and rotor
- Excessive starting-time protection
- Locked-rotor and load-jam protection
- Restart-inhibit protection
- Starts-per-hour supervision
- Current-unbalance protection
- Directional and non-directional overcurrent protection
- Sensitive earth-fault protection
- Undercurrent and loss-of-load protection
- Undervoltage and overvoltage protection
- Motor winding and bearing temperature monitoring
- Arc protection
- Active- and reactive-power protection
- Circuit-breaker control and switchgear interlocking
The enabled functions depend on the ordered relay configuration. A current-only model may not provide the same voltage, power or communication functions as a 7SK82 supplied with voltage inputs and additional modules.
Features
- Protects the motor during starting and normal operation
- Detects prolonged starting and locked-rotor conditions
- Thermal monitoring helps prevent damage caused by overloading
- Restart inhibit can block another start until the motor has cooled
- Current unbalance protection helps identify phase loss and unequal loading
- Undercurrent protection can detect dry running or loss of mechanical load
- Sensitive earth-fault protection helps identify motor stator earth faults
- Optional RTD inputs monitor motor windings and bearing temperatures
- Voltage inputs are available for additional voltage and power protection
- ATEX-certified versions suit applicable hazardous-area motor installations
- Motor start and stop control can be included within the relay
- Programmable logic supports panel control and interlocking
- DIGSI 5 is used for relay settings and commissioning
- IEC 61850 supports connection with modern plant and substation systems
- Fault and disturbance records help maintenance teams investigate trips
- Compact construction suits new motor panels and retrofit projects
- Standard coating of the electronic modules supports demanding industrial environments
- Suitable for the replacement of older Siemens motor protection relays
Applications
Siemens SIPROTEC 5 7SK82 Motor Protection Relays are commonly used for:
- Small and medium-sized induction motors
- Medium-voltage motors
- Large low-voltage motors
- Water and process pumps
- Boiler feed pumps
- Cooling-water pumps
- Compressors
- Industrial fans and blowers
- Conveyors and material-handling systems
- Crushers and mills
- Mixers and agitators
- Motor control centres
- Industrial switchgear panels
- Oil and gas installations
- Refineries and petrochemical plants
- Steel and cement plants
- Mining and mineral-processing facilities
- Water and wastewater treatment plants
- Power-plant auxiliary motors
- Hazardous-area motor applications
- Motor protection-panel retrofit projects
The Siemens 7SK82 is particularly useful for pump and compressor applications where loss of load, dry running, motor overheating or repeated starting can affect plant operation.
Selecting the Correct Siemens 7SK82 Relay
The description “Siemens SIPROTEC 7SK82” does not identify a standard relay. Models can differ by voltage inputs, binary contacts, display type, temperature inputs, communication modules and ATEX certification.
For an accurate quotation, share:
- Complete Siemens article number or MLFB
- Required quantity
- Destination country
- Communication requirement, where applicable
For replacement enquiries, also share clear photographs of the existing relay nameplate and rear terminal arrangement.
If the Siemens article number is unavailable, share the existing relay model and whether the requirement includes voltage inputs, RTD temperature monitoring or ATEX certification.
Siemens SIPROTEC 5 7SK82 Supplier and Exporter in India
ARP IMPEX supplies Siemens SIPROTEC 5 7SK82 Motor Protection Relays for switchgear manufacturers, EPC contractors, panel builders, power plants and industrial maintenance companies.
We handle enquiries for:
- Siemens SIPROTEC 5 7SK82 Motor Protection Relays
- Motor thermal overload protection relays
- Locked-rotor and excessive-start protection relays
- Motor relays with RTD temperature monitoring
- Protection relays for pumps and compressors
- ATEX-certified Siemens motor protection relays
- SIPROTEC motor relays with IEC 61850
- Replacement Siemens motor protection relays
- Motor control-panel retrofit requirements
- Industrial and medium-voltage motor protection projects
The Siemens SIPROTEC 7SK82 price depends on the complete article number, voltage inputs, binary I/O, temperature-monitoring arrangement, certification and communication modules.
Send the complete Siemens part number, required quantity and destination country for price, availability and export quotation.
