Description
⚙️ Product Introduction
The NEGISHI SEISAKUSHO LTD. NTA-5V-21T is an Automatic Voltage Regulator (AVR) designed for electrical power and generator control applications.
The regulator is intended to maintain stable voltage output by automatically adjusting the excitation or voltage-control circuit of a compatible generating system. It can be used as a replacement component in industrial, marine, and generator-related electrical systems where the original AVR specification matches.
The NTA-5V-21T is identified as a NEGISHI SEISAKUSHO LTD. product with Japan as its country of origin. Available listings identify the unit as New – Open Box / unused inventory.
🔧 Key Features
• Automatic voltage regulation
• NEGISHI SEISAKUSHO LTD. design
• Model NTA-5V-21T
• Suitable for generator and electrical control applications
• Designed for voltage stabilization and excitation control
• Compact industrial control component
• Suitable for replacement and maintenance inventory
• Japan-origin equipment
📋 Technical Data
| Parameter | Value |
|---|---|
| Brand | NEGISHI SEISAKUSHO LTD. |
| Model | NTA-5V-21T |
| Series | NTA Series |
| Product Name | Automatic Voltage Regulator |
| Product Type | AVR / Voltage Regulator |
| Application | Generator / Electrical Control |
| Control Function | Automatic Voltage Regulation |
| Country of Origin | Japan |
| Dimensions | Not specified; verify from physical unit |
| Condition / Status | New – Open Box |
⚡ Application
The NTA-5V-21T can be used in generator and electrical power-control systems where automatic regulation of generator voltage is required. It is particularly suitable for maintenance teams looking for an original replacement AVR for an existing NEGISHI SEISAKUSHO system.
Before installation, the AVR’s electrical characteristics should be compared with the original unit, including sensing voltage, excitation requirements, terminal configuration, generator rating, and wiring arrangement.
🛠️ Installation & Maintenance
Verify the complete model number and terminal markings before installation. Disconnect the generator and associated control power before replacing the AVR.
Inspect terminals, connectors, wiring, and the regulator housing for oxidation, contamination, or mechanical damage. After installation, perform voltage and excitation checks according to the generator manufacturer’s commissioning procedure.
⚠️ Compatibility Note
An AVR should not be selected only by physical appearance or model-family similarity. Confirm the generator type, sensing circuit, excitation system, voltage range, frequency, terminal arrangement, and adjustment requirements before applying the NTA-5V-21T.
❓ FAQ
Q: What is the NTA-5V-21T?
A: It is an Automatic Voltage Regulator manufactured by NEGISHI SEISAKUSHO LTD.
Q: What is the main function of an AVR?
A: An AVR regulates generator voltage by controlling the excitation system according to the generator’s operating conditions.
Q: Where can this unit be used?
A: It can be used in compatible generator, marine, industrial, and electrical control systems.
Q: Is the NTA-5V-21T new?
A: The referenced inventory is listed as New – Open Box, with seller information describing the unit as unused.
Q: Can it directly replace another AVR?
A: Direct replacement should only be confirmed after comparing the complete model number, electrical specifications, terminal configuration, and generator application.
Q: Is the country of origin Japan?
A: Yes. Available product specifications identify Japan as the country of origin.
🔄 10 Related NEGISHI SEISAKUSHO Models
- NEGISHI SEISAKUSHO NTA-5V-21T
- NEGISHI SEISAKUSHO NTA Series AVR
- NEGISHI SEISAKUSHO Automatic Voltage Regulator
- NEGISHI SEISAKUSHO Generator AVR
- NEGISHI SEISAKUSHO Voltage Regulator Unit
- NEGISHI SEISAKUSHO Excitation Controller
- NEGISHI SEISAKUSHO Generator Control Unit
- NEGISHI SEISAKUSHO Automatic Regulator Unit
- NEGISHI SEISAKUSHO Generator Excitation Module
- NEGISHI SEISAKUSHO Voltage Control Unit
