Siemens SIPROTEC 5 7UT82 Transformer Differential Protection Relay
Siemens SIPROTEC 5 7UT82 Transformer Differential Protection Relay Suppliers,Exporters in India
ARP IMPEX is a supplier and exporter of Siemens SIPROTEC 5 7UT82 Transformer Differential Protection Relays in India. We handle requirements for transformer protection panels, substations, power plants, industrial electrical systems, retrofit projects and replacement of existing Siemens protection relays.
The Siemens SIPROTEC 7UT82 is primarily designed for the differential protection of two-winding transformers. It detects internal transformer faults by comparing the currents measured on both sides of the transformer and initiates tripping when the difference indicates a genuine internal fault.
The relay is used as the main protection for power transformers. Depending on the selected configuration, it can also provide restricted earth-fault protection and additional backup protection for nearby cables, short lines and shunt reactors. It supports standard transformers, certain autotransformer arrangements and special transformer applications.
The 7UT82 has a compact SIPROTEC 5 design, making it a practical choice where the project requires dependable transformer differential protection without the larger hardware arrangement of a more complex multi-winding transformer relay.
It can adapt to different transformer vector groups and operating conditions. Stabilisation during transformer energisation and current-transformer saturation helps prevent unwanted tripping during inrush current or external faults.
Siemens DIGSI 5 is used for protection settings, logic, testing and commissioning. Integrated Ethernet supports DIGSI 5 and IEC 61850, while optional communication modules are available for connection with SCADA and substation automation systems.
For the Siemens SIPROTEC 7UT82 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: 7UT82
- Product type: Transformer differential protection relay
- Main application: Protection of two-winding transformers
- Transformer types: Standard transformers and applicable autotransformer arrangements
- Main protection: One transformer differential protection function
- Restricted earth fault: Up to two functions, depending on configuration
- Current-measuring points: Two three-phase and two single-phase measuring points
- Current inputs: Eight CT inputs in the standard variant
- Binary inputs: Seven in the standard variant
- Binary outputs: Seven in the standard variant
- Display options: Small or large front display
- Housing: Compact one-third 19-inch base module
- Engineering software: Siemens DIGSI 5
- Communication: Integrated Ethernet with optional plug-in modules
- IEC 61850: Reporting and GOOSE communication
- Logic: Programmable protection, control and automation logic
- Recording: Fault, event and disturbance recording
- Construction: Coated electronic modules for demanding environments
The 7UT82 is supplied in a predefined compact hardware arrangement. The exact display, communication modules, protection functions and auxiliary supply must still be checked against the complete Siemens MLFB or article number.
Main Protection Functions
Depending on the selected Siemens configuration, the SIPROTEC 7UT82 can provide:
- Two-winding transformer differential protection
- Differential protection for applicable autotransformers
- Restricted earth-fault protection
- Stabilisation during transformer inrush current
- Protection during current-transformer saturation
- Adaptation to different transformer vector groups
- Protection for phase-angle regulating transformers
- Transformer overexcitation supervision
- Backup overcurrent and earth-fault protection
- Arc protection
- Protection and monitoring of short cables and lines
- Backup protection for shunt reactors
- Programmable trip and interlocking logic
The actual functions depend on the ordered relay configuration. Buyers should not select a 7UT82 only by the model name, as the communication arrangement and enabled protection functions can differ between article numbers.
Features
- Designed mainly for two-winding transformer protection
- Detects internal phase and earth faults quickly
- Restricted earth-fault protection improves sensitivity near the transformer neutral point
- Stabilisation helps prevent unwanted trips during transformer energisation
- Handles current-transformer saturation during external faults
- Adapts to different transformer vector groups
- Supports applicable tap-position compensation
- Can protect standard and special transformer applications
- Provides backup protection for short cables, lines and shunt reactors
- Compact construction saves space inside the protection panel
- Small and large display versions are available
- Programmable logic supports tripping, alarms and interlocking
- DIGSI 5 simplifies settings, testing and commissioning
- IEC 61850 supports digital substation communication
- Optional communication modules support different plant protocols
- Fault and disturbance records help investigate transformer trips
- Coated electronic boards support use in harsh electrical environments
- Suitable for new transformer panels and relay replacement projects
Siemens positions the 7UT82 as a compact and cost-effective transformer differential relay with protection, control, monitoring and communication functions within the SIPROTEC 5 platform.
Applications
Siemens SIPROTEC 5 7UT82 Transformer Differential Protection Relays are used for:
- Two-winding power transformers
- Distribution transformers requiring differential protection
- Medium-voltage transformer protection panels
- High-voltage power transformers
- Extra-high-voltage transformer applications
- Applicable autotransformer protection schemes
- Phase-shifting transformers
- Arc-furnace transformers
- Converter transformers
- HVDC transformers
- FACTS transformer applications
- Industrial substations
- Utility substations
- Captive power plants
- Generation and transmission substations
- Transformer protection-panel upgrades
- Replacement of older Siemens transformer relays
- Backup protection for short cables and lines
- Shunt-reactor backup protection
- Selected motor and generator differential backup duties
The 7UT82 is most relevant where the project requires a compact Siemens differential protection relay for a two-winding transformer. More complex transformers with additional windings or larger protection schemes may require another model from the SIPROTEC 7UT range.
Selecting the Correct Siemens 7UT82 Relay
The description “Siemens SIPROTEC 7UT82” does not identify the complete relay configuration. Communication modules, display type, protection functions, auxiliary voltage and terminal arrangement must match the project or existing panel.
For an accurate quotation, share:
- Complete Siemens article number or MLFB
- Required quantity
- Destination country
- Communication requirement, where applicable
For replacement requirements, also share clear photographs of the existing relay nameplate, front display and rear terminals.
If the Siemens article number is unavailable, share the existing relay model and confirm whether the transformer is a standard two-winding transformer, autotransformer or special transformer application.
Siemens SIPROTEC 5 7UT82 Supplier and Exporter in India
ARP IMPEX supplies Siemens SIPROTEC 5 7UT82 Transformer Differential Protection Relays for utilities, EPC contractors, switchgear manufacturers, panel builders, power plants and industrial maintenance companies.
We handle enquiries for:
- Siemens SIPROTEC 5 7UT82 Protection Relays
- Two-winding transformer differential protection relays
- Restricted earth-fault protection relays
- Transformer protection relays with IEC 61850
- Protection relays for power and distribution transformers
- Siemens relays for transformer protection panels
- Transformer differential relay replacement
- Substation protection-panel retrofit requirements
- Siemens 7UT82 price and availability
- Siemens transformer relay export requirements
The Siemens SIPROTEC 7UT82 price depends on the complete article number, enabled functions, display arrangement, communication modules and required quantity.
Send the complete Siemens part number, required quantity and destination country for price, availability and export quotation.
