ABB SPAF 340 C Frequency and Load Shedding Relay

ABB SPAF 340 C Frequency and Load Shedding Relay Supplier and Exporter in India

ABB SPAF 340 C Replacement – REX615 Retrofit

ABB SPAF 340 C is a legacy frequency relay mainly used for automatic load shedding and frequency protection in power systems. ABB lists the product as not active since 2011, so most requirements today are for an existing relay replacement, plant shutdown spare or upgrade of an older SPACOM panel.

ABB also includes SPAF 340 in its SPACOM-to-REX615 retrofit program. This gives plants using the older SPAF relay an ABB-supported route to move to a current protection and control platform.

For an ABB SPAF 340 C replacement or retrofit quotation, please send:

• Complete ABB part or order code
• Clear relay nameplate photograph
• Required quantity
• Destination country
• Required delivery schedule

For most initial enquiries, these details are enough to start checking the correct relay or retrofit option.

ARP IMPEX supplies and exports ABB SPAF 340 C frequency relays for replacement and maintenance needs and can also assist with SPAF 340 C to REX615 retrofit enquiries.

Description

ARP IMPEX is a supplier and exporter of ABB SPAF 340 C frequency and load shedding relays for existing power plants, substations, industrial power systems and legacy ABB SPACOM installations.

SPAF 340 C was mainly developed for situations where the available generation is lower than the connected load. When this happens, system frequency starts to fall. The relay can disconnect selected loads in stages to help prevent a wider power-system disturbance.

The relay can control up to four circuit breakers for staged load shedding. It can operate according to:

• Underfrequency
• Overfrequency
• Rate of change of frequency
• A combination of frequency and rate-of-change criteria

This makes SPAF 340 C particularly relevant to older plants where staged load shedding is still handled by dedicated SPACOM relays.

Most buyers looking for SPAF 340 C today already have the relay installed. They normally need a replacement for a failed unit, an additional shutdown spare or a modern ABB retrofit.

If you have an existing SPAF 340 C, send us the part code or nameplate, and we can check the requirement.

Request a Quote for ABB SPAF 340 C

For price and availability, please send:

• ABB SPAF 340 C complete order code
• Quantity
• Destination country
• Required delivery date
• Clear nameplate photograph

If the full order number cannot be found, we can start with the relay nameplate.

For a REX615 retrofit, existing relay settings or panel information can also be shared if available.

Why Buy ABB SPAF 340 C from ARP IMPEX?

We can assist with:

• ABB part-code checking
• Existing relay nameplate matching
• Legacy SPAF 340 C spare supply
• Replacement for failed frequency relays
• Plant shutdown and maintenance stock
• Single-piece and multiple-quantity quotations
• REX615 retrofit enquiries
• Technical datasheets
• Export packing
• International shipping support

We handle requirements from power plants, utilities, EPC contractors, industrial plants, panel builders, maintenance companies and electrical traders.

ABB SPAF 340 C Model

SPAF 340 C belongs to ABB’s older SPACOM frequency relay range.

ABB’s detailed operating manual identifies SPAF 340 C3 as the relay version used for four-stage automatic load shedding. It uses the SPCF 1D15 combined frequency and rate-of-change-of-frequency module.

Common ABB documentation refers to the overall product as SPAF 340 C, while the detailed relay version appears as SPAF 340 C3.

For replacement supply, please check the complete order number or nameplate rather than assuming the version from the SPAF 340 C name alone.

Technical Specifications

• Brand: ABB
• Series: SPACOM / SPAF
• Product: SPAF 340 C
• Documented version: SPAF 340 C3
• Product type: Frequency and load shedding relay
• Product status: Legacy / discontinued
• Main function: Automatic load shedding
• Frequency protection: Underfrequency and overfrequency
• Rate-of-change protection: Positive and negative df/dt
• Frequency stages: Four
• Circuit-breaker control: Up to four load shedding breakers
• Undervoltage blocking: Available
• External blocking inputs: Available
• Communication: SPA serial communication
• Auxiliary supply: Different AC/DC versions available
• Self-supervision: Built-in

For an exact replacement, the complete ABB order code should be checked before quotation.

Features

• Four-stage frequency protection
• Automatic load shedding
• Underfrequency protection
• Overfrequency protection
• Rate-of-change-of-frequency protection
• Staged circuit-breaker tripping
• Separate operating times for protection stages
• Undervoltage blocking
• External blocking inputs
• Multiple trip and signalling outputs
• SPA communication
• Recorded system information
• Internal relay self-supervision

For most buyers, the important point is that SPAF 340 C can disconnect loads in stages when system frequency falls. Detailed frequency calculations are normally not needed for an initial spare enquiry.

Applications

SPAF 340 C is commonly used for:

• Automatic load shedding
• Underfrequency load shedding
• Power plant frequency protection
• Captive power plant load shedding
• Industrial power-system protection
• Generator frequency protection
• Large synchronous motor protection
• Substation load shedding schemes
• Islanding schemes
• Existing ABB SPACOM protection panels
• Legacy frequency relay replacement
• Plant shutdown spares

ABB specifically describes SPAF 340 C for staged load shedding when power demand exceeds available generation. It can also be used for overfrequency and underfrequency protection of generators, large synchronous motors and other electrical equipment.

ABB SPAF 340 C Replacement

Since SPAF 340 C is a legacy ABB product, replacement is now one of the main reasons buyers contact us for this relay.

Typical needs include:

• Replacement for a failed SPAF 340 C
• Matching spare for an existing load shedding panel
• Plant shutdown spare
• Maintenance stock
• Legacy ABB SPACOM frequency relay
• Upgrade of an old load shedding scheme

For an exact spare, send:

• Complete ABB order code
• Relay nameplate photograph
• Quantity
• Destination country

This helps us check the correct version before preparing the quotation.

ABB SPAF 340 C Replacement with REX615

ABB includes SPAF 340 in its current SPACOM-to-REX615 retrofit program. The program provides a REX615 relay together with a retrofit connector kit and documentation.

A REX615 retrofit can be considered when:

• The existing SPAF 340 C has failed
• Original relay availability is difficult
• Long-term ABB support is required
• The load shedding panel is being upgraded
• IEC 61850 communication is required
• Additional protection or monitoring functions are needed

ABB’s retrofit arrangement is intended to reduce the amount of new wiring required when an older SPACOM relay is replaced.

The existing SPAF 340 C application and panel details should still be checked before the REX615 replacement is finalised.

For an initial retrofit enquiry, send us:

• Existing SPAF 340 C nameplate
• Quantity
• Destination country
• Existing settings or panel details, if available

Information Required for ABB SPAF 340 C Quotation

For an Original SPAF 340 C Spare

Please send:

• Complete ABB part number
• Clear relay nameplate photograph
• Quantity
• Destination country
• Required delivery schedule

For REX615 Retrofit

If available, also share:

• Existing frequency settings
• Auxiliary supply
• Existing trip arrangement
• Panel drawing

Send your ABB SPAF 340 C part code, relay nameplate, quantity and destination country to ARP IMPEX for price, availability, replacement or REX615 retrofit quotation.

ARP IMPEX supplies ABB SPAF 340 C replacement relays, discontinued ABB load shedding relays and legacy SPACOM spares for international buyers.