ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Product Type | Automatic Voltage Regulator |
| Model | UNS 0121 A-Z,V1 |
| Ordering Number | 3BHE035301R0004 |
| Main Function | Automatic voltage regulation and excitation control |
| Regulation Function | Maintains generator voltage within the configured control range |
| Control Function | Monitors voltage feedback and adjusts the excitation control output |
| System Application | Generator excitation and voltage control systems |
| Control Mode | Automatic voltage regulation |
| Feedback Function | Voltage sensing and regulation feedback |
| System Integration | Interfaces with compatible generator excitation and control equipment |
| Installation | Industrial control cabinet / excitation system installation |
| Typical Applications | Power generation, generator excitation, voltage stabilization, and industrial power systems |
| Operating Role | Provides continuous voltage regulation during generator operation |
| Dimensions | 302 × 170 × 85 mm |
| Weight | 2.8 kg |
FAQ
1. What is the ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator used for?
The ABB UNS 0121 A-Z,V1 is an automatic voltage regulator designed to maintain stable generator voltage during operation. It monitors voltage feedback and adjusts the excitation control process to compensate for changes in generator load and operating conditions.
2. What is the difference between UNS 0121 A-Z,V1 and 3BHE035301R0004?
UNS 0121 A-Z,V1 is the model designation of the automatic voltage regulator, while 3BHE035301R0004 is the corresponding ABB ordering number. The model identifies the equipment type, while the ordering number is mainly used for procurement, spare-part management, and replacement identification.
3. How does an automatic voltage regulator control generator voltage?
The regulator continuously monitors the generator voltage through its sensing circuit and compares the measured value with the configured reference. When a voltage deviation is detected, it adjusts the excitation control output so that the generator voltage can return toward the required operating level.
4. What problems can occur if the UNS 0121 A-Z,V1 has a fault?
A regulator fault may result in unstable generator voltage, incorrect excitation response, voltage alarms, poor regulation performance, or difficulty maintaining the required voltage under changing load conditions. Before replacing the regulator, the voltage sensing circuit, excitation system, wiring, auxiliary power supply, and related control components should also be checked.
5. What should be checked when generator voltage fluctuates abnormally?
First check the regulator status, voltage feedback signals, configured reference values, and relevant alarm information. It is also important to inspect sensing connections and excitation components, because unstable feedback or problems elsewhere in the excitation circuit can produce symptoms that appear similar to an AVR malfunction.
6. What should be checked before replacing the ABB UNS 0121 A-Z,V1?
Confirm that the replacement matches model UNS 0121 A-Z,V1 and ordering number 3BHE035301R0004 and verify compatibility with the existing excitation system. The equipment should be safely isolated before replacement, and existing wiring, connectors, configuration parameters, and terminal assignments should be documented to reduce the risk of incorrect installation.
7. Can an AVR fault affect generator excitation performance?
Yes. The automatic voltage regulator is directly involved in controlling the excitation response, so an abnormal regulator or voltage feedback signal can cause incorrect excitation behavior. Depending on the fault, the generator may experience poor voltage regulation, excessive or insufficient excitation response, or protective system activation.
8. What tests should be performed after replacing the UNS 0121 A-Z,V1?
After installation, verify all wiring, terminals, feedback connections, and configuration settings before starting the generator. The system should then be tested under controlled conditions by checking voltage feedback, excitation response, voltage stability, alarms, and protection functions, followed by operation under representative load conditions to confirm reliable regulation.
ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
Successfully served more than 500 customers in more than 100 countries and regions including Saudi Arabia, UAE, the United States, Europe, Africa, and Southeast Asia
Our Mission
Provide customers with the best quality PLC spare parts and the fastest delivery service to ensure that their industrial automation systems are always in the best operating condition.
We provide a 1-year warranty service, and we support returns and exchanges for any issues to ensure your rights and interests are fully protected.
We can provide detailed product images upon request, and our team can arrange warehouse photos for confirmation to ensure you have all the information you need before making a purchase.
Shipping times vary depending on your location. With the support of our 16 global warehouses, we strive to deliver orders as quickly as possible. Contact us to get an estimated delivery time for your specific location.
The minimum order quantity (MOQ) is typically one unit. However, for larger orders, please contact us for potential discounts and pricing details.
Yes, we offer competitive pricing for bulk purchases. Please reach out to our sales team with the specifics of your order to receive a custom quote.
We accept various payment methods for wholesale orders, including bank transfers (T/T), letters of credit, and other options upon agreement. For large transactions, please contact us directly for payment terms.
Yes, we offer flexible ordering options for both small and large quantities. Whether youre looking for a single unit or a large batch, we can accommodate your needs.
We occasionally offer promotional discounts for new wholesale customers. Contact us to learn more about any current offers available for first-time buyers.
If you are unsure of compatibility with your existing setup please provide your system details and our support team can verify compatibility prior to purchase.
Returns are accepted within 30 days if the product is unused, unopened, and in its original packaging. Please note that return shipping and associated costs are the buyer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s responsibility.
Yes, we offer technical support for the installation and integration of our products. Our team can assist with setup, configuration, and troubleshooting to ensure a smooth installation.
