Description
RELIANCE VZ3000 UAZ3455/3475 Product Description
Product Overview
RELIANCE VZ3000 UAZ3455/3475 is a high-power AC drive converter/power unit belonging to the Reliance Electric VZ3000 adjustable-frequency drive family. Available technical references identify the UAZ3455/3475 as a three-phase, common-type converter unit used within VZ3000 drive systems, with versions associated with 200/400 VAC supply classes. One detailed listing specifies a 400 VAC, 50/60 Hz configuration with approximately 168 A input and 143 A output current.
The RELIANCE VZ3000 UAZ3455/3475 is intended for high-power motor-drive applications where controlled acceleration, deceleration, speed regulation and torque performance are required. The VZ3000 architecture uses separate converter/inverter configurations as well as integrated arrangements, allowing the power section to be matched with the required control and motor hardware.
For legacy industrial drive systems, VZ3000 UAZ3455/3475 is valuable as a replacement power-conversion assembly because it can preserve an existing Reliance VZ3000 drive architecture. Correct voltage, current, frame, converter/inverter arrangement and complete nameplate designation should be verified before replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | VZ3000 UAZ3455/3475 |
| Manufacturer | Reliance Electric |
| Product Series | VZ3000 |
| Product Type | AC Drive Converter / Power Unit |
| Unit Configuration | Separate Converter Unit |
| Power Phase | 3-Phase |
| Nominal Supply | 200–400 VAC class |
| Frequency | 50/60 Hz |
| 400 VAC Input Current | Approx. 168 A |
| 400 VAC Output Current | Approx. 143 A |
| Motor Power Class | High-power industrial drive |
| Drive Architecture | Converter + inverter / motor system |
| Control Technology | Adjustable-frequency/vector drive architecture |
| Installation | Control cabinet |
| Cooling | Forced-air industrial drive cooling |
| Associated Software | VZterm for Windows |
| Operator Interface | OPCU-2 |
| Application | High-power AC motor control |
| Hardware Reference | UAZ3455/3475 |
The available VZ3000 reference identifies UAZ3455/3475 as a separate three-phase converter unit for the common-type drive, with 400 VAC supply, 168 A input and 143 A output. Other sources describe the broader VZ3000 family as supporting 200–230 VAC and 380–460 VAC hardware variants, so the exact nameplate should be used when determining the installed voltage class.
Main Features and Advantages
High-Power AC Drive Architecture
The RELIANCE VZ3000 UAZ3455/3475 is designed for demanding motor-drive applications rather than low-power machine control. Its converter section forms the high-energy power-conversion stage of the VZ3000 system, supplying the DC-link power required by the associated inverter section.
VZ3000
Three-Phase Power Conversion
The UAZ3455/3475 is identified as a three-phase converter unit, making it suitable for industrial plants using three-phase AC distribution. Its high-current design supports large motor applications such as production machinery, rolling equipment and other continuous-duty industrial loads.
Flexible VZ3000 Configuration
A key advantage of the VZ3000 architecture is its modular power structure. The converter and inverter can be configured as separate units, allowing the drive system to be engineered around the motor rating and application requirements. The VZ3000 documentation also distinguishes dedicated and common-type hardware versions.
Controlled Motor Performance
The VZ3000 family provides adjustable-frequency motor control and supports high-performance control strategies for industrial AC motors. This allows operators to regulate motor speed and torque according to production requirements while reducing the mechanical and electrical stresses associated with direct-on-line starting.
Industrial Protection
The VZ3000 drive platform incorporates protection and monitoring functions intended to protect the power electronics and connected motor against abnormal operating conditions. Available references describe functions including overload, short-circuit, ground-fault, overvoltage and undervoltage protection.
Serviceability of Legacy Systems
The modular converter architecture makes the UAZ3455/3475 particularly useful for maintenance of older Reliance VZ3000 installations. Replacing the appropriate power unit can be considerably less disruptive than redesigning the complete motor-control system, especially where the original VZ3000 control software and cabinet wiring remain serviceable.
Engineering and Operator Tools
VZ3000 systems can be configured and monitored using VZterm for Windows, while the OPCU-2 operator terminal provides a local interface for drive operation and adjustment. These tools support commissioning, parameter management and troubleshooting of compatible VZ3000 systems.
Application Fields
RELIANCE VZ3000 UAZ3455/3475 is intended for high-power industrial motor-drive applications where reliable speed and torque control are required. Its three-phase converter architecture is suitable for large AC motors used in continuous-production and heavy-duty machinery.
In metallurgical and steel-processing plants, VZ3000 drive systems can be applied to large rollers, conveyors, processing lines and other high-power rotating equipment. The adjustable-frequency architecture allows motor speed to be matched to production requirements and process conditions.
In paper, converting and material-processing equipment, the drive can provide controlled power for large rotating machines, supporting stable production speeds and coordinated operation with upstream and downstream equipment. Similar applications can be found in industrial manufacturing and automated production lines.
The VZ3000 UAZ3455/3475 can also be encountered in machine tools, processing equipment, pumps, fans, conveyors and other industrial motor applications requiring substantial drive capacity. Its cabinet-mounted construction makes it suitable for centralized industrial motor-control panels.
For replacement projects, engineers should not rely solely on the VZ3000 series name. UAZ3455/3475, input voltage, current rating, converter/inverter configuration and motor data should all be compared with the original drive nameplate and system documentation before commissioning.
Related Products
- UAZ3455/3475 — The complete Reliance VZ3000 converter-unit designation; verify the exact nameplate configuration before replacement.
- VZ3000 — Reliance Electric adjustable-frequency AC drive family to which the UAZ3455/3475 belongs.
- VZ3000G — Related VZ3000-generation drive platform supported by the VZterm and OPCU-2 tools.
- OPCU-2 — VZ3000/VZ3000G operator terminal used for local drive operation and parameter access.
- VZterm for Windows — PC-based terminal software used for configuration, commissioning and service of compatible VZ3000 drives.
- UAZ3022 — Smaller VZ3000 drive hardware option for lower-power applications.
- UAZ3030 — Related VZ3000 AC drive hardware for applications below the UAZ3455/3475 power class.
- UAZ3037 — Another VZ3000 drive configuration used for industrial AC motor control.
- UVZC3007 — VZ3000 hardware configuration used in the broader drive family.
- VZ7000 — Related Reliance digital AC servo-drive family for applications requiring a different drive architecture.
