Description
Product Overview
The ABB UN1000B-Z.V6104 is identified with the UNITROL 1000 family of automatic voltage regulation and excitation-control equipment. An AVR regulates the terminal voltage of a synchronous generator by adjusting the excitation supplied to its field system. This control is important when generator loading changes, because excitation affects terminal voltage and reactive power behavior. ABB describes the UNITROL 1000 family for synchronous machines ranging from 100 kVA to 80 MVA, with applications across power generation, marine systems, and industrial installations. These family-level capabilities should not be treated as confirmation of every function available in this particular legacy configuration.
In operation, an excitation controller uses electrical measurements and configured control parameters to determine the required excitation response. Depending on the installed hardware and software, UNITROL 1000 systems can support voltage regulation and additional control functions. The exact interfaces, I/O allocation, excitation-current capability, and available control modes must be established from the applicable documentation for the installed unit. ABB documentation distinguishes UNITROL 1005, UNITROL 1010, and UNITROL 1020 hardware types, so specifications from one model should not be transferred to another without verification.
For maintenance and procurement, the key issue with the ABB UN1000B-Z.V6104 is exact identification. The supplied part number ends in R6140, while the available references connect the V6104 designation with 3BHE014557R6104. That difference must be resolved before purchase or installation. Check the nameplate, serial number, hardware revision, configuration files, excitation-system drawings, and existing controller settings. A similar model designation alone does not establish that a unit is electrically or functionally interchangeable. Confirm actual condition with supplier and request supporting test or inspection records for used or repaired equipment.
Product Introduction
The ABB UNITROL 1000 is an automatic voltage regulation and excitation-control platform for synchronous generators and motors. It adjusts excitation to support generator voltage regulation and stable operation under changing load conditions.
The supplied UN1000B-Z.V6104 designation appears in references associated with order number 3BHE014557R6104. Because the provided number is 3BHE014557R6140, verify the exact part number and installed configuration before sourcing a replacement.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Product family | UNITROL 1000 |
| Model designation | UN1000B-Z.V6104, as supplied |
| Part number | 3BHE014557R6140, supplied number not independently verified |
| Related documented order number | 3BHE014557R6104 |
| Product type | Automatic voltage regulator / excitation controller |
| Main function | Synchronous-machine excitation and voltage regulation |
| Application | Generator and industrial power systems |
| Supported machine capacity | UNITROL 1000 family: 100 kVA–80 MVA; exact applicability depends on configuration |
| Excitation-current rating | Verify for the exact hardware and excitation system |
| Supply voltage | Verify from the unit nameplate and applicable manual |
| Analog and digital I/O | Configuration-dependent; verify exact hardware |
| Communication interfaces | Verify installed interface options and software configuration |
| Operating temperature | Verify for the exact legacy unit |
| Mounting and dimensions | Verify using the applicable outline drawing |
| Firmware / control software | Confirm installed revision and compatibility |
| Condition | Confirm actual condition with supplier |
Procurement note: The exact electrical ratings and interface details for 3BHE014557R6140 remain unverified. The UNITROL 1000 family includes multiple hardware variants, and published specifications for current 1010/1020 products should not be assumed to apply to this specific legacy designation.
UNITROL1000
Related Products
These products are related to ABB excitation control; they are not confirmed direct replacements for the supplied part number.
| Product | Description |
|---|---|
| ABB UNITROL 1000 | Excitation-control family for synchronous generators and motors. |
| ABB UNITROL 1010 | UNITROL 1000 hardware variant with its own electrical and I/O specifications. |
| ABB UNITROL 1020 | UNITROL 1000 hardware variant with a different feature and interface configuration from the 1010. |
| ABB UNITROL 1005 | Compact UNITROL 1000 variant with a distinct excitation-current rating and I/O arrangement. |
| ABB UNITROL 6000 | Separate excitation-system family for applications with different system requirements. |
Frequently Asked Questions
Q1: Is 3BHE014557R6140 the correct part number for UN1000B-Z.V6104?
I could not confirm that exact combination. Available references associate UN1000B-Z, with 3BHE014557R6104. Check the physical nameplate and original documentation before placing an order.
Q2: What does this controller do?
It belongs to the automatic voltage regulator and excitation-control category. Its main role is to regulate the excitation of a synchronous machine to help maintain generator terminal voltage.
Q3: Can it replace another UNITROL 1000 controller?
Not automatically. Compare the complete order number, hardware variant, excitation-current requirements, measurement inputs, control outputs, communications, and application configuration before approving a replacement.
Q4: Does replacing the controller require configuration or software work?
Potentially. The installed control software, parameter set, measurement scaling, excitation limits, and protection settings may need to be preserved or restored. Back up existing configuration data and follow the applicable commissioning instructions.
Q5: Can the unit be hot-swapped?
Do not assume hot-swap capability. Excitation equipment can affect generator voltage control and protection. Follow the approved shutdown, isolation, and commissioning procedures for the specific installation.
Q6: How should the buyer verify the unit’s condition?
Request nameplate photos, serial number, hardware revision, connector and terminal photos, and any available inspection or functional-test report. Confirm whether the unit is new, used, repaired, or refurbished.
Q7: What information is needed to confirm compatibility?
The most useful records are the existing unit’s full nameplate, excitation-system drawings, generator data, controller configuration, and the exact ABB order number. These details are more reliable for confirming a replacement than a similar model name alone.
