Description
Product Overview
The ABB UNS0881B-PV2, part number 3BHE050077R0102, is a thyristor firing and pulse-control board associated with ABB generator excitation systems. It is used in compatible excitation converter assemblies to process firing commands from the excitation controller and generate appropriately timed trigger pulses for the power thyristors. These pulses regulate conduction in the rectifier bridge, helping control the DC excitation supplied to a synchronous generator’s field winding.
The board is associated with ABB UNITROL excitation equipment. Its exact platform compatibility should be confirmed before replacement, as supplier descriptions differ regarding the specific UNITROL series supported. Check the full part number, board revision, backplane connections, and excitation cabinet configuration against the existing hardware. Because this board participates in power-converter control, installation and testing should be performed by qualified personnel following the manufacturer’s safety procedures.
Product Datasheet
| Parameter | Details |
|---|---|
| Brand | ABB |
| Model | UNS0881B-PV2 |
| Part Number | 3BHE050077R0102 |
| Series | ABB UNS0881B-PV2 / Excitation Control |
| Product Name | Thyristor Firing Board / Pulse-Control Module |
| Product Type | Power semiconductor firing-control PCB |
| Application | Compatible generator excitation and thyristor converter systems |
| Place of Manufacture | Supplier listings vary; verify the individual unit’s label |
| Product Status | Supplier-dependent; confirm new, used, or refurbished condition |
| Dimensions | Approximately 255 × 102 × 22 mm in one supplier listing; verify before installation |
| Weight | Approximately 0.24–0.45 kg, depending on the listed assembly and packaging |
| Country of Origin | Not independently verified |
| Power Requirements | Confirm supply voltage and ratings from the applicable ABB documentation |
| Discontinued Status | Current lifecycle status not confirmed; check with ABB |
Recommended Related ABB Models
The following models and part numbers are related to ABB excitation controls and power electronics. They are not all direct substitutes for UNS0881B-PV2; confirm system compatibility and hardware revisions before ordering.
- UNS0881B-PV2 — Thyristor firing and pulse-control board identified by the supplied model.
- 3BHE050077R0102 — ABB order number associated with UNS0881B-PV2.
- UNS0881A-P — Earlier UNS0881-series board designation; verify compatibility before considering replacement.
- 3BHB006338R0001 — Part number associated with the UNS0881A-P designation in supplier references.
- PPD113B01-25-111000 — ABB AC 800PEC controller configuration used in compatible power-electronics applications.
- 3BHE023784R2530 — ABB order number associated with the PPD113B01 controller configuration.
- PPD539 A102 — ABB AC 800PEC controller for compatible power-electronics systems.
- 3BHE039770R0102 — ABB part number associated with PPD539 A102.
- PCD235A101 — ABB control module associated with excitation and power-electronics systems.
- 3BHE032025R0101 — ABB part number associated with PCD235A101.
- GVC736BE101 — ABB gate-control unit designation for compatible converter assemblies.
- 3BHE019719R0101 — ABB part number associated with GVC736BE101.
- UDC920BE01 — ABB control/interface module designation; verify its specific function.
- 3BHE034863R0001 — ABB part number associated with UDC920BE01.
- UNITROL 6000 — ABB excitation-system platform for compatible generator applications; verify the specific board and cabinet configuration.
