Overview
The ABB Unitrol UNS 4901 a V1000 is a controller module used within the Unitrol 6000 excitation system for synchronous generators and motors. It provides precise voltage regulation, fast dynamic response, and high reliability for demanding industrial and utility environments. Built on ABB’s modular digital control platform, it supports both automatic voltage regulation (AVR) and manual control, making it suitable for new installations as well as retrofit modernization projects.
Technical Data
| Parameter | Specification |
|---|---|
| Product ID | 3ADT220149R0001 |
| Type | Controller D5 UNS4901 a V1000 |
| System | Unitrol 6000 Excitation System |
| Net Dimensions | 320 × 165 × 48 mm |
| Net Weight | 10 kg |
Key Features
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High-precision voltage regulation for synchronous generators and motors
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Digital, modular control architecture for easy integration
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Fast response and robust performance under heavy load conditions
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Fully compatible with ABB Unitrol 6000 platforms
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Compact, service-friendly design
Application
This module is suitable for systems requiring stable, high-performance excitation control, specifically:
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Voltage regulation for synchronous generators
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Excitation control in industrial synchronous motors
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Upgrade/retrofit of legacy excitation systems
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Integration into modular Unitrol 6000 excitation architectures
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High-reliability applications where stable grid or plant operation is critical
Typical Applications
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Power generation plants (hydro, thermal, nuclear)
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Large industrial synchronous motors (steel, mining, cement)
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Utility grid and substation excitation systems
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Retrofit projects moving to modern Unitrol 6000 solutions
FAQ
Q1: What does the UNS 4901 a V1000 do in the Unitrol 6000 system?
It functions as a controller board managing excitation, voltage regulation, and system supervision for synchronous machines.
Q2: Is it suitable for retrofit work?
Yes. Its compatibility with Unitrol 6000 architecture makes it ideal for upgrading legacy excitation equipment.
Q3: Which industries use this module?
Power generation, utilities, and heavy industrial sectors that rely on stable, precise excitation control.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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