ABB SPAU 320 C Overvoltage, Undervoltage and Residual Voltage Relay

ABB SPAU 320 C Overvoltage, Undervoltage and Residual Voltage Relay Supplier and Exporter in India

ABB SPAU 320 C Replacement – REX615 Retrofit

ABB SPAU 320 C is a legacy SPACOM voltage protection relay. ABB lists the product as not active since 2009, so most current requirements are for existing relay replacement, matching spares, plant shutdowns or modernisation of older protection panels.

ABB’s current SPACOM-to-REX615 Relay Retrofit Program specifically includes SPAU 320 C1. The retrofit package uses a REX615 relay with a retrofit connector kit and is intended to reduce major rewiring when supported SPACOM relays are replaced.

For other SPAU 320 C variants such as SPAU 320 C, C3, C4 and C5, the exact replacement should be checked from the existing order code, installed relay modules and required protection functions before a modern relay is selected.

For an ABB SPAU 320 C replacement or REX615 retrofit enquiry, please send:

• Complete SPAU 320 C order code
• Exact variant – C, C1, C3, C4 or C5
• Clear photograph of the existing relay nameplate
• 100 V or 110 V rated voltage
• 50 Hz or 60 Hz
• Auxiliary supply voltage
• Existing settings, if available
• Required quantity
• Destination country

ARP IMPEX handles enquiries for ABB SPAU 320 C replacement relays, SPAU 320 C1 retrofit requirements, legacy SPACOM spares and old voltage relay replacements from India.

Description

ARP IMPEX supplies and exports ABB SPAU 320 C voltage relays for existing substations, medium-voltage switchgear, industrial distribution systems and replacement requirements.

SPAU 320 C is an older ABB SPACOM relay used for overvoltage, undervoltage and residual voltage supervision. Its main application is monitoring substation busbar phase-to-phase voltage together with residual voltage of the distribution network.

The relay has also been used for protection and supervision of:

• Motors
• Transformers
• Capacitor banks
• Distribution busbars
• Industrial power systems

ABB describes SPAU 320 C as a general-purpose voltage relay for applications requiring overvoltage, undervoltage and/or residual overvoltage supervision.

Because SPAU 320 C is now a legacy product, buyers normally search for it when they need an exact spare, a replacement for a failed unit or a retrofit of existing switchgear.

If you are looking for an ABB SPAU 320 C supplier in India, SPAU 320 C price, SPAU 320 C1 replacement, discontinued ABB voltage relay, or SPAU 320 C1 to REX615 retrofit, send the complete relay code or existing nameplate for checking.

Request a Quote for ABB SPAU 320 C

For price and availability, please share:

• Complete ABB SPAU 320 C order code
• Exact model variant
• Required quantity
• Destination country
• Required delivery schedule

For an existing replacement, also send a clear photograph of the relay nameplate.

When the full code is unavailable, please mention:

• 100 V or 110 V rated voltage
• 50 Hz or 60 Hz
• Auxiliary supply
• Required protection functions
• Original SPAU relay or retrofit requirement

Why Buy ABB SPAU 320 C from ARP IMPEX?

• Support for legacy ABB SPACOM relay enquiries
• Part-code and nameplate checking
• Identification of SPAU 320 C variants
• Matching spare and replacement requirements
• Quotations for single units and multiple quantities
• Support for discontinued ABB relay enquiries
• SPAU 320 C1 to REX615 retrofit enquiries
• Technical datasheets with quotation
• Export packing and international shipping assistance
• Supply support for utilities, EPC contractors and industrial maintenance buyers

ABB SPAU 320 C Models and Variants

SPAU 320 C is a product family with different module combinations rather than only one hardware arrangement.

ABB documentation lists the following versions:

ABB SPAU 320 C

The fully equipped SPAU 320 C includes:

• One SPCU 1C6 residual overvoltage module
• Two SPCU 1C1 overvoltage/undervoltage modules

This version provides the complete combination of overvoltage, undervoltage and residual voltage supervision.

ABB SPAU 320 C1

SPAU 320 C1 includes:

• One SPCU 1C6 residual overvoltage module
• One SPCU 1C1 overvoltage/undervoltage module

This variant is particularly relevant for replacement enquiries because SPAU 320 C1 is specifically included in ABB’s current SPACOM-to-REX615 retrofit program.

ABB SPAU 320 C3

SPAU 320 C3 includes:

• One SPCU 1C6 residual overvoltage module only

This version is used where residual voltage supervision is the main requirement.

ABB SPAU 320 C4

SPAU 320 C4 includes:

• Two SPCU 1C1 overvoltage/undervoltage modules

It does not include the SPCU 1C6 residual voltage module.

ABB SPAU 320 C5

SPAU 320 C5 includes:

• One SPCU 1C1 overvoltage/undervoltage module

This is the simpler overvoltage/undervoltage version within the SPAU 320 C family.

For an exact replacement, the C/C1/C3/C4/C5 designation should always be checked from the relay order code or module arrangement.

Technical Specifications

• Brand: ABB
• Series: SPACOM / SPAU
• Product family: SPAU 320 C
• Product type: Overvoltage, undervoltage and residual voltage relay
• Product status: Legacy / not active since 2009
• Available variants: SPAU 320 C, C1, C3, C4 and C5
  Main application: Busbar voltage and residual voltage supervision
• Overvoltage function: Available depending on installed modules
• Undervoltage function: Available depending on installed modules
• Residual overvoltage function: Available depending on installed modules
• Overvoltage/undervoltage module: SPCU 1C1
• Residual voltage module: SPCU 1C6
• Rated voltage: 100 V or 110 V
• Rated frequency: 50 Hz or 60 Hz
• Overvoltage operation: Definite-time or inverse-time depending on setting
• Undervoltage operation: Definite-time or inverse-time depending on configuration
• Residual overvoltage stages: Two-stage where SPCU 1C6 is fitted
• External blocking: Available
• Trip and signalling outputs: Available
• Serial communication: SPA interface
• Fibre-optic communication: Available through applicable SPA bus module
• Wide auxiliary supply: 80–265 V AC/DC
• Low DC auxiliary supply: 18–80 V DC
• Measured and recorded values: Available through relay display
• Self-supervision: Built-in relay supervision
• Panel mounting: Flush, semi-flush or applicable 19-inch arrangements

ABB’s ordering information confirms both 50/60 Hz and the two main auxiliary supply ranges across the SPAU 320 C variants.

The exact module combination, voltage input, frequency and auxiliary supply should be confirmed from the complete order code before quotation.

Features

Depending on the selected SPAU 320 C variant, available functions include:

• Busbar overvoltage supervision
• Busbar undervoltage supervision
• Residual overvoltage supervision
• Earth-fault backup using residual voltage
• Protection of motors against abnormal voltage
• Transformer voltage supervision
• Capacitor bank protection
• Multiple independent voltage stages
• Definite-time operation
• Inverse-time overvoltage operation
• External blocking inputs
• Trip and alarm outputs
• Voltage measurement
• Recorded disturbance values
• Digital front indication
• SPA serial communication
• Fibre-optic substation communication
• Continuous relay self-supervision
• 100 V and 110 V versions
• 50 Hz and 60 Hz versions

ABB lists busbar voltage monitoring, general overvoltage/undervoltage supervision, fibre-optic serial communication and continuous self-supervision among the main SPAU 320 C features.

Applications

ABB SPAU 320 C is commonly found in:

• Substation busbar voltage supervision
• Overvoltage protection
• Undervoltage protection
• Residual overvoltage supervision
• Busbar earth-fault backup
• Medium-voltage switchgear
• Industrial distribution switchgear
• Motor voltage protection
• Transformer voltage protection
• Capacitor bank protection
• Incoming feeder voltage supervision
• Distribution substations
• Industrial substations
• Existing ABB SPACOM installations
• Legacy protection panels
• Plant shutdown spare requirements
• Existing SPAU 320 C replacement
• SPAU 320 C1 retrofit projects

ABB specifically identifies busbars, motors, capacitor banks and transformers among the applications for SPAU 320 C.

ABB SPAU 320 C Replacement

SPAU 320 C has been inactive since 2009, so replacement is now one of the main commercial requirements for this product family.

Buyers may require:

• Original SPAU 320 C spare
• SPAU 320 C1 replacement
• SPAU 320 C3 replacement
• SPAU 320 C4 replacement
• SPAU 320 C5 replacement
• Matching relay for existing switchgear
• Emergency shutdown spare
• Modern replacement for an old SPACOM relay

For an exact replacement, send:

• Complete order code
• Exact C/C1/C3/C4/C5 variant
• Clear nameplate photograph
• Required quantity
• Destination country

The module arrangement is particularly important because the different SPAU 320 C versions do not all contain the same protection functions.

ABB SPAU 320 C1 Replacement with REX615

ABB currently includes SPAU 320 C1 in its official SPACOM-to-REX615 retrofit program.

ABB’s retrofit program includes:

• REX615 relay
• Retrofit connector kit
• Documentation
• Configuration support options
• Installation accessories and support where required

The program is intended to reduce major new wiring and shorten shutdown time while updating older SPACOM installations.

A SPAU 320 C1 retrofit may be considered when:

• The original relay is difficult to source
• An installed SPAU 320 C1 has failed
• Old switchgear is being modernised
• Long-term relay support is required
• IEC 61850 communication is required
• Additional monitoring or protection functions are needed

Before finalising the retrofit, check:

• Existing SPCU modules
• 100 V or 110 V inputs
• Auxiliary supply
• Trip contacts
• Alarm contacts
• Blocking inputs
• Existing voltage settings
• Existing panel wiring

Important: ABB’s current retrofit list specifically names SPAU 320 C1, not SPAU 320 C, C3, C4 or C5 as a group. Those other versions should be reviewed individually before claiming a direct REX615 retrofit.

Information Required for ABB SPAU 320 C Quotation

For most enquiries, please send:

• Complete ABB SPAU 320 C order code
• Exact variant – C, C1, C3, C4 or C5
• Clear relay nameplate photograph
• Required quantity
• Destination country
• Required delivery schedule

If the complete code is unavailable:

• Installed relay modules, if visible
• 100 V or 110 V voltage input
• 50 Hz or 60 Hz
• Auxiliary supply voltage
• Original relay or retrofit requirement

ARP IMPEX accepts enquiries against an ABB order code, relay nameplate, BOQ or existing protection-panel information.

Contact us for ABB SPAU 320 C price, SPAU 320 C1 replacement relay, SPAU 320 C3/C4/C5 legacy spares, discontinued ABB SPAU 320 C availability, ABB voltage relay supplier in India or SPAU 320 C1 to REX615 retrofit quotation from India.