ABB UN 0940a-P VAR.1 Angle Measure Transducer Module

Key Features

Technical Specifications

Applications

The UN 0940a-P VAR.1 is utilized in power generation and industrial synchronization systems:

• Power Generation: Synchronous generator synchronization and paralleling

• Industrial Drives: Large synchronous motor synchronization systems

• Utility Substations: Grid connection and phase angle monitoring

• Marine Applications: Shipboard power generation synchronization

Important Notes

• Legacy Component: This module is part of a legacy ABB product line. Verify exact compatibility with your specific SYNCHROTACT or UNITROL system model and hardware revision before ordering.

• Part Number Variations: The part number may appear in supplier listings as UN0940A-PV1, UN 0940a-P VAR.1, or with alternate references HEIR444414R1 / HIER444414 R1 . These variations typically refer to the same underlying product.

• Repair and Exchange: Due to the specialized nature of this module, repair and exchange services are available from industrial electronics repair specialists.

• Warranty: Standard warranties on repaired/exchanged units vary by supplier. Confirm warranty terms before purchase.

• Documentation: For definitive technical specifications, refer to ABB's official SYNCHROTACT and UNITROL system documentation for your specific application.

FAQ

Q1: What is the primary function of the ABB UN 0940a-P VAR.1 module?

A: It is an Angle Measure Transducer Module used in ABB SYNCHROTACT 3 and UNITROL systems. Its primary function is to provide precise phase angle measurement for generator synchronization, enabling safe and accurate paralleling of synchronous generators with the electrical network.

Q2: What is the difference between UN 0940a-P and UN 0940a-P VAR.1?

A: The "VAR.1" designation indicates a specific hardware revision variant. The base model number identifies the module type, while the variant suffix indicates compatibility with defined SYNCHROTACT or UNITROL system configurations.

Q3: What does the alternate part number HEIR444414R1 refer to?

A: HEIR444414R1 (also written as HEIR444414R0001 or HIER444414 R1) is an internal ABB ordering or reference number for this specific module variant . It may be used interchangeably with UN 0940a-P VAR.1 when sourcing the component.

Q4: Is this module still in production?

A: This is a legacy component. Availability is typically limited to existing stock, refurbished units, or repair services from industrial automation aftermarket suppliers.

Q5: How can I verify compatibility with my SYNCHROTACT or UNITROL system?

A: Consult your system documentation or contact ABB technical support with your specific system model and serial number. The VAR.1 designation indicates compatibility with particular hardware revisions.

Q6: Can this module be repaired?

A: Yes. Industrial electronics repair specialists offer repair and exchange services for the UN 0940a-P module. Completed repairs typically include a warranty (varies by provider).