Siemens SIPROTEC 5 7SJ86 Backup Overcurrent Protection Relay
Siemens SIPROTEC 5 7SJ86 Backup Overcurrent Protection Relay Suppliers,Exporters in India
ARP IMPEX is a supplier and exporter of Siemens SIPROTEC 5 7SJ86 Backup Overcurrent Protection Relays in India. We handle requirements for line protection panels, utility substations, industrial power networks, switchgear projects and replacement of existing Siemens protection relays.
The Siemens SIPROTEC 7SJ86 is mainly used as backup or emergency protection for overhead lines, cable circuits and other line-protection schemes. If the main line protection does not operate as expected, the 7SJ86 can detect the fault and initiate three-pole tripping to clear the affected circuit.
The relay can protect lines supplied from one end or two ends, parallel lines and ring networks. Directional comparison and protection-data communication can also be used to improve fault-clearing time, depending on the selected scheme and relay configuration.
The 7SJ86 is useful in applications where a standard feeder relay does not provide enough backup functionality. It can detect phase faults, earth faults and abnormal voltage or frequency conditions while also supporting circuit-breaker control, load shedding and switchgear interlocking.
Different hardware versions are available with varying binary inputs, output contacts and communication modules. Siemens DIGSI 5 is used for relay settings, logic and commissioning. IEC 61850 communication is supported through the integrated Ethernet interface, with additional communication modules available for applicable configurations.
Buyers looking for Siemens SIPROTEC 5 7SJ86 Relays can share the complete Siemens article number for price, availability and export quotation.
Technical Specifications
- Brand: Siemens
- Product family: SIPROTEC 5
- Model: 7SJ86
- Product type: Modular backup overcurrent protection relay
- Main use: Backup and emergency protection for line-protection devices
- Network application: Lines and electrical networks across different voltage levels
- Tripping arrangement: Three-pole tripping
- Current inputs: Four CT inputs
- Voltage inputs: Four VT inputs
- Binary inputs: 11 to 23, depending on the hardware variant
- Binary outputs: 9 to 25, depending on the hardware variant
- Hardware versions: Three predefined standard variants
- Engineering software: Siemens DIGSI 5
- Communication: Ethernet and optional plug-in communication modules
- IEC 61850: Supported on applicable configurations
- Control: Circuit-breaker control and switchgear interlocking
- Logic: Programmable protection, control and automation logic
- Recording: Fault, event and disturbance records
- Construction: Modular and expandable SIPROTEC 5 hardware
The exact inputs, outputs, housing size, communication modules and enabled protection functions depend on the complete Siemens MLFB or article number.
Main Protection Functions
Depending on the ordered configuration, the Siemens SIPROTEC 7SJ86 can provide:
- Directional and non-directional overcurrent protection
- Backup and emergency line protection
- Directional and non-directional earth-fault protection
- Ground-fault detection in isolated and compensated networks
- Undervoltage and overvoltage protection
- Underfrequency and overfrequency protection
- Frequency-change protection for load shedding
- Active- and reactive-power protection
- Arc protection
- Circuit-breaker failure protection
- Synchrocheck and switching supervision
- Trip-circuit and circuit-breaker monitoring
- Automatic reclosing on applicable schemes
- Backup protection for transformers, generators, motors and busbars
The required functions should be confirmed before the quotation. A 7SJ86 selected for line backup protection may not have the same communication or automation arrangement as a model configured for power-system backup duties.
Features
- Designed specifically for backup and emergency line protection
- Supports selective three-pole tripping
- Suitable for lines supplied from one or two ends
- Can be used on parallel lines and ring networks
- Directional comparison can help reduce fault-clearing time
- Protection-data communication supports coordinated line protection
- Detects earth faults in isolated and arc-suppression-coil networks
- Voltage and frequency functions support system backup protection
- Load-shedding functions can support industrial and utility networks
- Circuit-breaker failure protection provides additional backup tripping
- Synchrocheck supports controlled circuit-breaker closing
- Programmable logic supports switchgear control and interlocking
- DIGSI 5 is used for relay settings, engineering and commissioning
- IEC 61850 supports modern substation automation systems
- Fault and disturbance records help engineers investigate relay operations
- Modular hardware allows the I/O and communication arrangement to match the project
- Coated electronic modules suit demanding operating environments
- Suitable for new protection panels, retrofit work and relay replacement
Siemens positions the 7SJ86 for backup protection of lines and other primary equipment, including transformers, generators, motors and busbars.
Applications
Siemens SIPROTEC 5 7SJ86 Backup Protection Relays are commonly used for:
- Backup protection for transmission lines
- Backup protection for distribution lines
- Overhead-line protection
- Underground cable circuits
- Lines supplied from one end
- Lines supplied from two ends
- Parallel line protection
- Open and closed ring networks
- Utility substations
- Industrial substations
- Breaker-and-a-half switchgear schemes
- Transformer backup protection
- Generator backup protection
- Motor backup protection
- Busbar backup protection
- Ground-fault protection
- Underfrequency load shedding
- Circuit-breaker control and interlocking
- Protection-panel retrofit projects
- Replacement of older Siemens numerical relays
ARP IMPEX supplies Siemens SIPROTEC 7SJ86 Relays for backup line protection, emergency overcurrent protection, earth-fault protection and IEC 61850 substation projects.
Selecting the Correct Siemens 7SJ86 Relay
The description “Siemens SIPROTEC 7SJ86” does not identify a standard configuration. Models can differ by binary inputs and outputs, communication modules, display arrangement and enabled protection functions.
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 terminal arrangement.
If the Siemens article number is unavailable, share the existing relay model and the main requirement, such as line backup protection, earth-fault protection, breaker failure protection or transformer backup protection.
Siemens SIPROTEC 5 7SJ86 Supplier and Exporter in India
ARP IMPEX supplies Siemens SIPROTEC 5 7SJ86 Backup Overcurrent Protection Relays for utilities, switchgear manufacturers, EPC contractors, panel builders, power plants and industrial maintenance companies.
We handle enquiries for:
- Siemens SIPROTEC 5 7SJ86 Protection Relays
- Backup overcurrent protection relays
- Emergency line protection relays
- Three-pole line protection relays
- Directional overcurrent and earth-fault relays
- Ground-fault protection relays
- Circuit-breaker failure protection relays
- SIPROTEC relays with IEC 61850
- Replacement Siemens numerical relays
- Substation protection-panel retrofit requirements
The Siemens SIPROTEC 7SJ86 price depends on the complete article number, hardware configuration, enabled protection functions, communication modules and ordered quantity.
Send the complete Siemens part number, required quantity and destination country for price, availability and export quotation.
