AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
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AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
The Knowtek AVR R438 is an excellent voltage regulator for alternators with AREP or PMG excitation. It ensures that excitation current is controlled to maintain a steady output voltage.
AVR R438 Automatic Voltage Regulator for Generator Volt Regulation
Artigo n.º: 31236002

AVR R438 Automatic Voltage Regulator for Generator Volt Regulation

Artigo n.º: 31236002

MZN 4802

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The Knowtek AVR R438 is an excellent voltage regulator for alternators with AREP or PMG excitation. It ensures that excitation current is controlled to maintain a steady output voltage.
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O que se Destaca

Stable Voltage Control
Ensures consistent power output by stabilizing voltage levels, protecting sensitive equipment from fluctuations during generator operation.
Wide Compatibility
Designed to work with various generator models, making it a versatile choice for different applications and enhancing user convenience.
Robust Construction
Built to withstand harsh conditions and prolonged use, providing durability and reliability for both residential and commercial generators.

Detalhes do produto

Shop for Knowtek AVR R438 Automatic Voltage Regulator online at Ubuy Mozambique. Ensure stable generator volt regulation for uninterrupted power supply.
  • Voltage regulation: ± 0.5%
  • Simple to set and use, reliable performance
  • Compliant with I.E.C. 60034-1 and U.L. 508 / C.S.A. standards
  • Compatible with LSA42.3, LSA43.2, LSA44.3, LSA44.2 alternators
  • Features U/F and LAM functions, response time of 500 ms
  • Operating conditions: -40°C to +70°C, storage conditions: -55°C to +85°C, hygrometry: 98%
Package Dimensions7.05 x 5.47 x 2.91 inches (17.9 x 13.9 x 7.4 cm)
Item Weight1.52 pounds (690 grams)
ManufacturerKNOWTEK
Item model numberR438

Quem Deverá Comprar?

Suitable For
  • Generator Owners

    Ideal for individuals who own generators and require stable voltage regulation for reliable performance during power outages.

  • RV Enthusiasts

    Great for RV owners needing dependable voltage regulation for onboard generators, enhancing their travel experience with consistent power.

  • Industrial Use

    Useful for businesses that rely on generators for backup power, ensuring equipment operates smoothly without voltage fluctuations.

Not Suitable For
  • Small Generators

    Not suitable for small-scale generators, as it may be over-engineered and unnecessarily complex for basic requirements.

DESCRIÇÃO DO PRODUTO

Tem alguma Dúvida? Converse connosco

Perguntas e respostas do cliente

  • Pergunta: What is the AVR R438 Automatic Voltage Regulator used for?

    Resposta: The AVR R438 Automatic Voltage Regulator is primarily used to maintain stable voltage levels in generators. It ensures that the output voltage remains consistent, which is essential for protecting sensitive electronic equipment from voltage fluctuations. This regulator operates by continuously monitoring the generator's output and adjusting the excitation to maintain the desired voltage level, making it ideal for residential use, commercial applications, and powering machinery.
  • Pergunta: How does the AVR R438 improve generator performance?

    Resposta: The AVR R438 enhances generator performance by providing precise voltage regulation. When the load changes, this device quickly responds to fluctuations, ensuring that voltage output remains stable. This capability prevents equipment damage and allows generators to operate more efficiently, which is particularly beneficial in industrial settings where consistent power is vital for machine operation and productivity.
  • Pergunta: Is the AVR R438 compatible with all generator types?

    Resposta: The AVR R438 is compatible with a wide range of generators, especially those used in typical AC synchronous alternators. However, it is always best to check the specifications of your generator to ensure compatibility. This compatibility allows users to upgrade their existing generators with enhanced voltage regulation capabilities without needing to purchase new units.
  • Pergunta: What are the key technical features of the AVR R438?

    Resposta: The AVR R438 comes equipped with features like built-in protection against overvoltage and short circuits, which guarantee safe operation under various load conditions. Additionally, it includes a field flashing option for easy setup. These features contribute to ensuring the longevity of both the voltage regulator and the generator it is connected to, making it a reliable choice for consumers.
  • Pergunta: Can the AVR R438 be installed by a non-professional?

    Resposta: While the AVR R438 can technically be installed by someone with basic electrical knowledge, hiring a qualified technician is recommended to ensure proper installation. Correct setup is crucial for optimal performance and safety, particularly in applications where equipment is sensitive to voltage levels. An experienced technician can ensure that the installation meets safety standards and operates efficiently.
  • Pergunta: What applications benefit most from the AVR R438?

    Resposta: The AVR R438 is beneficial in scenarios requiring stable power supply, including residential backup systems, construction sites, and industrial operations. It is particularly advantageous for venues that depend on sensitive equipment, such as hospitals and data centers, where power integrity is critical. This versatility makes it a preferable choice for various users looking to enhance their generator's reliability.
  • Pergunta: How does the AVR R438 respond to fluctuating loads?

    Resposta: The AVR R438 automatically adjusts the generator's excitation based on load changes, ensuring that voltage output remains within specified limits. For example, when high-demand equipment (like welders) is turned on, the regulator instantly compensates to prevent voltage drops, protecting devices connected to the generator from potential damage due to low voltage conditions.
  • Pergunta: What are the dimensions of the AVR R438?

    Resposta: The AVR R438 typically has a compact design, measuring approximately 3.5 x 5.5 inches, making it easily integrable into various generator setups without needing excessive space. This compactness allows for flexible placements within generator enclosures, facilitating easier access for maintenance and monitoring, which can be beneficial in cramped or limited spaces.
  • Pergunta: What voltage range can the AVR R438 regulate?

    Resposta: The AVR R438 is capable of regulating a voltage range of approximately 120V to 480V, depending on the generator configuration. This broad range makes it suitable for a variety of generator applications, providing peace of mind for users who require different operational voltages depending on their power needs. This flexibility makes it a versatile component for both light and heavy-duty generators.
  • Pergunta: Where can I buy AVR R438 Automatic Voltage Regulator for Generator Volt Regulation in Mozambique?

    Resposta: You can purchase the AVR R438 Automatic Voltage Regulator for Generator Volt Regulation through Ubuy, an online retail platform that offers a wide range of electrical components. Ubuy provides a user-friendly shopping experience, detailed product listings, and convenient purchasing options, making it an ideal choice for acquiring this essential voltage regulation device.

Knowtek Voltage Regulators R438 Editorial Review

The Knowtek AVR R438 is an automatic voltage regulator designed for generator voltage regulation. It provides a stable output voltage, protecting your equipment from voltage fluctuations. The device is easy to install and user-friendly, with adjustable voltage settings. Users have reported positive experiences with the Knowtek AVR R438, praising its performance and reliability. However, some customers have reported issues with compatibility and customer support.

Avaliações e Classificações dos Clientes

11 classificações de clientes
  • 5 Estrela
    87%
  • 4 Estrela
    0%
  • 3 Estrela
    13%
  • 2 Estrela
    0%
  • 1 Estrela
    0%

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Prós

  • Stable output voltage
  • Easy installation
  • Adjustable voltage settings
  • Good performance
  • Reliable

Contras

  • Compatibility issues

CONFIANÇA NA PLATAFORMA E SEGURANÇA DO COMPRADOR

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4.2/5 9250 + reviews
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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

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23 July 2026 · via Trustpilot
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MZN 4802

Encomende já e receba por volta de Sábado, Agosto 29

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Os nossos principais Parceiros Logísticos
  • fedex
  • dhl
Entrega internacional mais rápida

Recursos e benefícios

  • Designed analog AVR.
  • Regulates voltage for alternators with AREP or PMG excitation.
  • Maintains output voltage.
  • Good replacement for AVR RS437 and R438C.
  • Compatible Alternators: LSA42.3, LSA43.2, LSA44.3, LSA44.2

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