Siemens SIPROTEC 5 7SJ85 Feeder and Overcurrent Protection Relay

Siemens SIPROTEC 5 7SJ85 Feeder and Overcurrent Protection Relay Suppliers,Exporters in India

ARP IMPEX is a supplier and exporter of Siemens SIPROTEC 5 7SJ85 Feeder and Overcurrent Protection Relays in India. We handle requirements for switchgear manufacturers, EPC contractors, panel builders, utility substations, industrial power systems and replacement projects.

The Siemens SIPROTEC 7SJ85 is a modular protection relay used for feeders, distribution lines and capacitor-bank applications. It combines protection, circuit-breaker control, measurements, event recording and communication within one device.

Depending on the selected configuration, the relay can provide directional and non-directional overcurrent protection, earth-fault protection, voltage protection, load shedding, automatic reclosing and switchgear control. Siemens also offers capacitor-bank protection functions within the 7SJ85 platform.

The modular design is useful for projects that require more inputs, outputs or communication options than a fixed compact relay can provide. Expansion modules can be added, and the relay is available with a small display, a large display or without a display, depending on the panel requirement.

Applicable configurations can protect several feeders through one device. Siemens lists support for up to nine feeders with up to 40 analogue inputs, although the actual capacity depends on the ordered hardware and protection scheme.

The 7SJ85 works with Siemens DIGSI 5 for settings, logic and commissioning. IEC 61850 and other communication options are available for integration with SCADA, protection networks and substation automation systems.

Buyers looking for Siemens SIPROTEC 5 7SJ85 Relays can share the complete Siemens article number for price, availability and export quotation.

Technical Specifications

• Brand: Siemens
• Product family: SIPROTEC 5
• Model: 7SJ85
• Product type: Modular feeder and overcurrent protection relay
• Main applications: Feeders, lines and capacitor banks
• Protection direction: Directional and non-directional
• Current and voltage inputs: Depend on the selected hardware
• Binary inputs and outputs: Expandable according to the relay configuration
• Hardware options: Predefined variants with optional expansion modules
• Display options: Small display, large display or no display
• Rated frequency: 50/60 Hz
• Engineering software: Siemens DIGSI 5
• Communication: Ethernet, serial or fibre-optic options
• IEC 61850: Available on applicable configurations
• Control functions: Circuit-breaker control and switchgear interlocking
• Logic: User-programmable protection and automation logic
• Recording: Fault, event and disturbance records
• Environmental protection: Coated electronic modules for demanding installations
• Mounting: Protection, control and switchgear panels

Siemens provides several standard hardware variants with expandable I/O arrangements. The exact inputs, outputs, communication modules and protection functions must be checked against the complete Siemens MLFB or article number.

Main Protection Functions

Depending on the selected configuration, the Siemens SIPROTEC 7SJ85 can provide:

• Directional and non-directional phase overcurrent protection
• Directional and non-directional earth-fault protection
• Sensitive earth-fault protection
• Detection of intermittent earth faults
• Undervoltage and overvoltage protection
• Automatic reclosing
• Underfrequency load shedding
• Circuit-breaker failure protection
• Synchrocheck and switching supervision
• Arc protection
• Backup protection for transformers, generators, motors and busbars
• Capacitor-bank protection on applicable configurations
• Circuit-breaker control and programmable logic

The capacitor-bank functions available within the 7SJ85 range include overcurrent, overload, current-unbalance, peak-overvoltage and differential protection, depending on the ordered configuration.

Features

• Combines feeder protection, control and monitoring in one relay
• Supports directional and non-directional overcurrent protection
• Suitable for radial, ring and parallel feeder networks
• It can protect overhead lines and underground cable feeders
• Detects earth faults in isolated and compensated networks
• Modular I/O arrangement suits simple and complex protection panels
• Expansion modules can be added where more contacts or inputs are required
• Applicable configurations can protect multiple feeders
• Automatic reclosing supports overhead-line applications
• Load-shedding functions support industrial and utility power systems
• Synchrocheck supports controlled circuit-breaker closing
• Capacitor-bank protection can be included where required
• DIGSI 5 is used for settings, logic and commissioning
• IEC 61850 supports modern substation communication
• Fault and disturbance records help investigate relay operation
• Coated electronic modules suit demanding industrial environments
• Suitable for new panels, retrofit projects and protection-system upgrades
• Can be considered for replacing older Siemens feeder protection relays

Siemens positions the 7SJ85 as a modular overcurrent protection device for projects requiring flexible protection, control and automation. The coated electronic boards are intended to improve availability in harsh operating conditions.

Applications

Siemens SIPROTEC 5 7SJ85 Feeder Protection Relays are commonly used for:

• Incoming feeder protection
• Outgoing feeder protection
• Overhead distribution lines
• Underground cable feeders
• Radial distribution systems
• Ring distribution networks
• Parallel feeder protection
• Lines supplied from one or two ends
• Utility substations
• Industrial substations
• Power-generation plants
• Captive power systems
• Renewable-energy feeder connections
• Transformer backup protection
• Generator backup protection
• Motor and busbar backup protection
• Underfrequency load-shedding systems
• Automatic switchover schemes
• Capacitor-bank protection
• Multi-feeder protection panels
• Switchgear control and interlocking
• Protection-panel retrofit projects

Siemens lists feeder and line protection, backup protection, capacitor-bank monitoring, load shedding and automatic switchover among the main 7SJ85 applications.

ARP IMPEX supplies Siemens SIPROTEC 7SJ85 Relays for directional overcurrent protection, earth-fault protection, multi-feeder panels, capacitor-bank protection and IEC 61850 substation projects.

Selecting the Correct Siemens 7SJ85 Relay

The description “Siemens SIPROTEC 7SJ85” does not identify a standard relay. Models can differ by analogue inputs, binary contacts, expansion modules, display type, communication ports 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 application, such as feeder protection, multi-feeder protection, earth-fault protection or capacitor-bank protection.

Siemens SIPROTEC 5 7SJ85 Supplier and Exporter in India

ARP IMPEX supplies Siemens SIPROTEC 5 7SJ85 Feeder and Overcurrent Protection Relays for switchgear manufacturers, EPC contractors, panel builders, utilities, power plants and industrial maintenance companies.

We handle enquiries for:

• Siemens SIPROTEC 5 7SJ85 Protection Relays
• Modular feeder protection relays
• Directional overcurrent protection relays
• Earth-fault protection relays
• Multi-feeder protection relays
• Overhead-line and cable protection relays
• Capacitor-bank protection relays
• SIPROTEC relays with IEC 61850
• Replacement Siemens numerical relays
• Substation protection-panel retrofit requirements

The Siemens SIPROTEC 7SJ85 price depends on the complete article number, hardware configuration, expansion modules, enabled protection functions, communication interface and ordered quantity.

Send the complete Siemens part number, required quantity and destination country for price, availability and export quotation.