ABB SPAU 341 C Voltage Regulator Relay

ABB SPAU 341 C Voltage Regulator Relay Supplier and Exporter in India

ABB SPAU 341 C Replacement – Current ABB Voltage Regulator Options

ABB SPAU 341 C is an older SPACOM voltage regulator used with power transformers fitted with an on-load tap changer (OLTC). ABB lists SPAU 341 C as not active since 2012, so enquiries today are generally for replacement of an existing regulator, matching legacy spares, maintenance requirements or modernisation of an old transformer control panel.

For new or modernisation requirements, ABB REU615 Configuration B is a current ABB voltage protection and control relay specifically intended for automatic and manual voltage regulation of power transformers with motor-driven on-load tap changers. However, it should be treated as an engineered replacement rather than a simple drop-in substitute for SPAU 341 C.

For an ABB SPAU 341 C replacement enquiry, please send:

• Complete SPAU 341 C order number
• SPAU 341 C1 or SPAU 341 C3
• Clear photograph of the existing nameplate
• Rated voltage: 100 V, 110 V or 120 V
• CT secondary: 1 A or 5 A, where used
• 50 Hz or 60 Hz
• Auxiliary supply voltage
• Existing tap changer details
• Existing settings, if available
• Required quantity
• Destination country

ARP IMPEX handles enquiries for ABB SPAU 341 C replacement relays, SPAU 341 C1 and C3 legacy units, OLTC voltage regulator requirements and modern ABB voltage regulator alternatives from India.

Description

ARP IMPEX supplies and exports ABB SPAU 341 C voltage regulator relays for existing transformer panels, substations and maintenance requirements.

SPAU 341 C was developed for automatic and manual voltage regulation of power transformers fitted with on-load tap changers. In a single-transformer installation, the regulator can operate mainly from voltage measurement. For transformers operating in parallel, voltage and current measurements are used along with the selected parallel-control method.

The regulator controls the tap changer to keep the transformer output voltage within the required range. It also supports line-drop compensation and can supervise tap changer position.

For parallel transformers, SPAU 341 C supports three operating principles:

• Master/slave
• Negative reactance
• Minimising circulating current

ABB states that up to three transformers can operate in parallel when using the minimising circulating current principle. The master/slave and negative-reactance methods can be applied to a larger number of parallel transformers.

Request a Quote for ABB SPAU 341 C

For pricing and availability, please send:

• ABB SPAU 341 C complete order number
• SPAU 341 C1 or C3
• Quantity
• Destination country
• Required delivery schedule
• Nameplate photograph for replacement requirements

If the order number is unavailable, please also mention:

• Voltage input
• Current input
• Auxiliary voltage
• Frequency
• Existing transformer rating
• Tap changer make/model, if available

For a modern replacement enquiry, existing panel drawings or a wiring diagram can also help with selection.

Why Buy ABB SPAU 341 C from ARP IMPEX?

• Support for legacy ABB SPACOM requirements
• SPAU 341 C1 and SPAU 341 C3 identification
• Part-number and nameplate checking
• Matching spare enquiries
• Support for discontinued ABB regulator requirements
• Single-unit and project quantity quotations
• Assistance with modern ABB voltage-regulator options
• Technical datasheets with quotation
• Export packing and international shipping support
• Supply support for utilities, EPC contractors and industrial plants

ABB SPAU 341 C Models

SPAU 341 C is a small product family with two main versions: SPAU 341 C1 and SPAU 341 C3. ABB’s product guide confirms that the difference is mainly in the regulator modules fitted.

ABB SPAU 341 C1

SPAU 341 C1 is the more fully equipped version and includes:

• SPCU 1D50 automatic voltage regulator module
• SPCN 1D56 manual voltage regulator module

It supports automatic transformer tap control as well as dedicated local manual raise/lower control through the manual regulating module.

ABB documented order numbers including:

• RS 488 003-AA
• RS 488 003-CA
• RS 488 003-DA
• RS 488 003-FA

Versions supplied with the RTXP18 test adapter were listed under the RS 488 203 series.

ABB SPAU 341 C3

SPAU 341 C3 includes:

• SPCU 1D50 automatic voltage regulator module

It does not include the dedicated SPCN 1D56 manual voltage-regulating module fitted in C1.

ABB documented order numbers including:

• RS 488 005-AA
• RS 488 005-CA
• RS 488 005-DA
• RS 488 005-FA

Versions with RTXP18 were listed under the RS 488 205 series.

For an exact SPAU 341 C replacement, the C1/C3 version and complete RS order number should be checked from the existing nameplate.

Technical Specifications

• Brand: ABB
• Series: SPACOM / SPAU
• Product family: SPAU 341 C
• Product type: Transformer voltage regulator
• Product status: Legacy / not active since 2012
• Main models: SPAU 341 C1 and SPAU 341 C3
• Main application: Voltage regulation of power transformers with OLTC
• Automatic regulator module: SPCU 1D50
• Manual regulator module: SPCN 1D56 on SPAU 341 C1
• Voltage input: Selectable 100 V, 110 V or 120 V
• Current inputs: 1 A or 5 A
• Rated frequency: 50 Hz or 60 Hz depending on order
• Automatic regulator operating-time setting: 0–300 seconds
• Tap changer control: Raise and lower commands
• Tap changer position input: 0–20 mA input available
• Line-drop compensation: Available
• Overcurrent blocking: Available
• Undervoltage blocking: Available
• Parallel transformer control: Supported
• Parallel methods: Master/slave, negative reactance and minimising circulating current
• Maximum transformers with minimising circulating current: Three
• Serial communication: SPA fibre-optic bus
• Communication speed: 4800 or 9600 baud
• Wide auxiliary supply: 80–265 V AC/DC
• Low-voltage auxiliary supply: 18–80 V DC
• External control inputs: 18–250 V DC or 80–250 V AC
• Output contact nominal voltage: 250 V AC/DC
• Self-supervision: Built-in
• Operating temperature: -10°C to +55°C
• Panel protection: IP54 when flush mounted
• Approximate fully equipped weight: 5.5 kg

The exact frequency, auxiliary supply and module arrangement should always be checked from the complete ABB order number.

Features

• Automatic transformer voltage regulation
• Manual voltage regulation on SPAU 341 C1
• Control of motor-driven on-load tap changers
• Raise and lower tap changer commands
• Single-transformer voltage regulation
• Parallel-transformer voltage regulation
• Master/slave control
• Negative-reactance control
• Minimising circulating-current control
• Line-drop compensation
• Tap changer position measurement
• Three-phase overcurrent blocking
• Undervoltage blocking
• Local push-button operation
• Digital display of settings and measured values
• SPA serial communication
• Fibre-optic communication
• Continuous internal self-supervision
• 100 V, 110 V and 120 V voltage-input selection
• 1 A and 5 A current inputs
• 50 Hz and 60 Hz versions

For buyers replacing an old unit, the important points are usually the SPAU 341 C1/C3 version, order number, voltage and current inputs, auxiliary supply and existing OLTC control arrangement.

Applications

SPAU 341 C is mainly found in:

• Power transformer voltage regulation
• On-load tap changer control
• Distribution substations
• Utility substations
• Industrial substations
• Single-transformer installations
• Parallel transformer installations
• Transformer control panels
• Bus voltage regulation
• Automatic tap changer control
• Manual tap changer control
• Line-drop compensation applications
• Existing ABB SPACOM installations
• Old transformer-panel maintenance
• Plant shutdown spare requirements
• SPAU 341 C1 replacement
• SPAU 341 C3 replacement
• Transformer voltage-regulator modernisation

ABB specifically designed SPAU 341 C for power transformers with OLTCs in distribution substations, including both single-transformer and parallel-transformer arrangements.

ABB SPAU 341 C Replacement

Since SPAU 341 C has been inactive since 2012, current requirements are mostly connected with existing installations.

Buyers may require:

• Original SPAU 341 C1 spare
• Original SPAU 341 C3 spare
• Replacement for a failed voltage regulator
• Maintenance spare
• Shutdown spare
• Existing transformer-panel replacement
• Modern OLTC voltage regulator upgrade

For an exact legacy replacement, provide:

• Complete RS order number
• SPAU 341 C1 or C3
• Nameplate photograph
• Required quantity
• Destination country

The complete order number also helps identify the frequency and auxiliary-supply version. ABB’s documented suffixes include AA, CA, DA and FA combinations covering 50/60 Hz and the two auxiliary supply ranges.

Modern ABB Alternative for SPAU 341 C

For modernisation projects, ABB REU615 Configuration B is highly relevant because ABB currently positions it for automatic and manual voltage regulation of power transformers fitted with motor-driven on-load tap changers.

REU615 Configuration B supports functions including:

• Automatic OLTC voltage regulation
• Manual OLTC control
• Parallel-transformer operation
• Master/follower operation
• Minimising circulating-current control
• Negative-reactance control
• Line-drop compensation
• Tap changer position supervision
• Overcurrent blocking
• Undervoltage blocking
• IEC 61850 communication

However, REU615 should not be described as a plug-and-play SPAU 341 C replacement. Existing CT/VT circuits, control outputs, tap changer wiring, parallel operation method, panel dimensions and settings need to be reviewed before a replacement is finalised.

Also, ABB’s current SPACOM-to-REX615 retrofit list contains SPAA 341 C, not SPAU 341 C. These are different products, so I would avoid advertising “SPAU 341 C to REX615 retrofit” unless ABB confirms the specific project.

Information Required for ABB SPAU 341 C Quotation

For most legacy spare enquiries, please send:

• Complete ABB SPAU 341 C order number
• SPAU 341 C1 or SPAU 341 C3
• Clear relay/regulator nameplate photograph
• Quantity
• Destination country
• Required delivery schedule

For replacement or modernisation, also provide where available:

• Transformer rating
• OLTC make and model
• 100 V / 110 V / 120 V voltage input
• 1 A / 5 A current input
• 50 Hz / 60 Hz
• Auxiliary supply
• Existing tap changer position signal
• Existing control wiring
• Parallel transformer requirement
• Existing SPAU 341 C settings

ARP IMPEX accepts enquiries against an ABB order number, nameplate photograph, BOQ or existing transformer-control panel details.

Contact ARP IMPEX for ABB SPAU 341 C price, SPAU 341 C1 replacement, SPAU 341 C3 availability, discontinued ABB SPAU 341 C voltage regulator, ABB OLTC voltage regulator supplier in India, transformer tap changer controller replacement or modern ABB REU615 voltage regulator requirements.