ABB REJ517 Directional Earth-Fault Relay

ABB REJ517 Directional Earth-Fault Relay Supplier and Exporter in India

ABB REJ517 Legacy Relay – Price, Availability and Replacement Enquiries

ABB REJ517 is a directional or non-directional earth-fault protection relay used in distribution substations, feeder protection systems and industrial electrical networks. For price and availability, send the complete ABB order code, nameplate photograph, quantity and destination country.

Description

ARP IMPEX supplies and exports ABB REJ517 directional earth-fault relays for existing substations, switchgear panels, industrial power systems and legacy ABB protection installations.

REJ517 is used where earth-fault protection needs more than simple residual-current measurement. The relay measures earth-fault current, zero-sequence voltage and their phase relationship, allowing it to determine the direction of an earth fault. It can also be configured for non-directional operation where directional discrimination is not required.

The relay has a low-set and a high-set earth-fault stage. Both stages can operate directionally or non-directionally. The low-set stage supports definite-time or IDMT operation, while the high-set stage uses definite-time operation. ABB also provided intermittent earth-fault protection, circuit-breaker failure protection and disturbance recording in the REJ517.

REJ517 was mainly used for earth-fault protection and supervision of distribution substations, but ABB also documents applications involving generators, motors and transformers.

For ABB REJ517 price, old stock availability or replacement enquiries, send the full relay code from the marking strip or nameplate. This helps confirm the exact hardware before quotation.

Technical Specifications

• Brand: ABB
• Model: REJ517
• Product type: Directional / non-directional earth-fault protection relay
• Product status: Not active since 2009
• Main protection: Directional earth-fault
• Non-directional earth-fault mode: Available
• Low-set earth-fault stage: I₀>
• High-set earth-fault stage: I₀>>
• Zero-sequence voltage stage: U₀b>
• Low-set timing: Definite-time or IDMT
• High-set timing: Definite-time
• Directional measurement: Earth-fault current, zero-sequence voltage and phase angle
• Intermittent earth-fault protection: Available
• Circuit-breaker failure protection: Included
• Disturbance recorder: Included
• Rated frequency: 50 / 60 Hz selectable
• Communication: Optical PC interface / SPA communication
• Self-supervision: Continuous hardware and software supervision

ABB documentation shows REJ517A 407-BAA as an ordering example. The relay uses a 0.2/1 A current measuring input and a 100 V voltage input in the documented hardware arrangement.

Features

• Directional earth-fault protection
• Non-directional earth-fault operation when required
• Two earth-fault current stages
• Sensitive low-set earth-fault protection
• High-set earth-fault protection
• Zero-sequence voltage supervision
• Definite-time and IDMT operation
• Intermittent earth-fault protection
• Forward or reverse directional operation
• Circuit-breaker failure protection
• Disturbance recording
• Configurable trip and signalling outputs
• Two setting groups
• Optical connection for relay settings and data
• Continuous internal self-supervision

An interesting feature of REJ517 is that its earth-fault stages can also be configured as voltage stages, giving the relay a three-stage voltage-monitoring arrangement when required.

Applications

ABB REJ517 can be used for:

• Medium-voltage feeder earth-fault protection
• Directional feeder earth-fault protection
• Distribution substations
• Industrial power-distribution networks
• Isolated-neutral networks
• Resonant-earthed networks
• Compensated networks
• Cable feeder protection
• Generator earth-fault protection
• Motor earth-fault protection
• Transformer earth-fault protection
• Switchgear protection panels
• Intermittent earth-fault detection
• Existing ABB REJ-series protection installations

For directional operation, ABB documents basic-angle characteristics suitable for isolated-neutral and resonant-earthed networks, as well as sin(φ) or cos(φ) operating characteristics.

ABB REJ517 vs ABB REJ511

These two relays should not be treated as the same product.

ABB REJ511 is mainly a non-directional earth-fault relay.

ABB REJ517 adds directional earth-fault protection using earth-fault current, zero-sequence voltage and phase-angle measurement. It can also be programmed for non-directional operation.

For a plant or switchgear panel originally fitted with REJ517, it is therefore important to confirm whether directional protection is actually being used before selecting a replacement relay.

ABB REJ517 and REJ527

ABB grouped REJ517 and REJ527 as directional earth-fault relays within its older multipurpose numerical protection relay series. Both provide directional/non-directional earth-fault functions.

The wider ABB series also included:

• REJ511 / REJ521 – Earth-fault relays
• REJ513 / REJ523 – Overcurrent relays
• REJ515 / REJ525 – Overcurrent and earth-fault relays
• REJ517 / REJ527 – Directional earth-fault relays
• REU513 / REU523 – Voltage protection relays

REJ517 itself is a specific relay model rather than a family with C1, C2 or similar variants.

ABB REJ517 Part Number Identification

ABB documentation gives the following ordering example:

REJ517A 407-BAA

The complete order number identifies the relay hardware, analogue interface, binary input arrangement and auxiliary supply configuration.

For an ABB REJ517 replacement or spare requirement, send:

• Complete ABB REJ517 order code
• Clear nameplate photograph
• Quantity required
• Destination country
• Required delivery date

If the order number is not readable, clear photographs of the front and rear relay markings can help with identification.

Why Buy ABB REJ517 from ARP IMPEX?

ARP IMPEX supplies ABB protection relays for utilities, industrial plants, power companies, EPC contractors, panel builders, maintenance companies and electrical traders.

We can assist with:

• ABB REJ517 part-code checking
• Legacy relay availability
• Existing relay matching
• Directional earth-fault relay enquiries
• Single-unit and multiple-quantity requirements
• ABB technical documentation
• Export packing
• International shipment

Request a Quote for ABB REJ517

For ABB REJ517 price and availability, send the complete part number, relay nameplate, quantity and destination country.

Send your ABB REJ517 part code and quantity to ARP IMPEX for legacy spare availability, replacement enquiry and export quotation.