Are you looking for the best AS440 automatic voltage regulator (AVR) factories in China? If so, you’re in the right place. In this article, we’ll compare the top manufacturers, highlighting their key features, product quality, and what sets them apart in the industry. Let’s dive in and find the perfect fit for your generator needs.

AVR AS440,Stamford AVR AS440

Product Details: The AS440 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR) designed for brushless generators. It employs Surface Mount Technology (SMT) for high integration in a small footprint. Key specifications include: sensing input voltage of 100-130 VAC or 190-264 VAC 1 phase, frequency of 50-60 Hz nominal, power input voltage of 100-264 VAC 1 phase, output voltage of 82 VDC at 200 VAC, continuous current of 4 A and transient current of 7.5 A for 10 seconds. It has a regulation accuracy of +/- 1.0% and thermal drift of 0.03% per °C change in AVR ambient temperature. The AVR

also features under-frequency protection, over-excitation protection, and external voltage adjustment via a 1 kΩ, 1 W trimmer[1][2][3].

Pros:
– High accuracy with +/- 1.0% voltage regulation
– Fast response times: AVR response in 20 ms, field current to 90% in 80 ms, and m…
– Under-frequency and over-excitation protection for safe operation
– External voltage adjustment and analogue input for fine control
– Compact design using Surface Mount Technology (SMT)

Cons:
– Output current de-rates by 5% per °C above 60 °C
– Fixed time delay for over-excitation protection (10-15 seconds)
– Requires careful handling and installation to avoid damage

Cheap price China Original Stamford AVR As440 As480 …

Product Details: Hongfu Motor offers original Stamford AVR (Automatic Voltage Regulator) systems, such as the AS440, AS480, SX440, SX460, and MX321, which are used in diesel and gas generators. These AVRs are designed to regulate the output voltage of the generator, ensuring stable and reliable power supply. They are compatible with various alternator brands, including Stamford, Mecc Alte, and Leroy Somer. The AVRs come with features like automatic voltage regulation, overvoltage protection, and under voltage protection.

Pros:
– Ensures stable and reliable power output
– Compatible with multiple alternator brands
– Features automatic voltage regulation and protection mechanisms
– High reliability and durability
– Global service and support network

Cons:
– May require technical expertise for installation and maintenance
– Dependent on the quality of the alternator and generator set
– Potential for higher costs compared to non-original or generic AVRs

Stamford AVR As440 As450 As480 Sx440 Sx460 Mx341 …

Stamford AVR – AS440 Voltage Regulator

Automatic Voltage RegulatorAVR AS440 – China HS Code

Product Details: The Stamford AS440 Automatic Voltage Regulator (AVR) is a half-wave phase-controlled thyristor type AVR designed for brushless generators. It employs Surface Mount Technology (SMT) for high integration in a small footprint. Key features include voltage sensing inputs of 100-130 VAC or 190-264 VAC at 50-60 Hz, power input of 100-264 VAC at 50-60 Hz, and an output of 82 VDC at 4A continuous and 7.5A transient for 10 seconds. The AVR provides +/- 1.0% voltage regulation, 0.03% thermal drift per °C, and under-frequency protection set at 94-98% Hz. It also includes analogue input, quadrature droop input, and over-excitation protection. The

operating temperature range is -40°C to +70°C, and relative humidity is up to 95% non-condensing[2][3][4].

Pros:
– Robust and reliable solid-state electronics
– Built-in test function and selectable power supply
– Simple connection to the alternator
– Fine control of generator output via remote voltage trimmer
– Facility for droop CT connection for parallel running
– Under-frequency protection and over-excitation protection
– High accuracy with +/- 1.0% voltage regulation

Cons:
– Output current de-rates by 5% per °C above 60°C
– Requires careful handling due to sensitive electronic components
– Specific installation and adjustment procedures must be followed
– May require additional accessories for certain applications

AVR AS440 China – Energy World

Product Details: The Stamford AVR AS440 is a half-wave phase-controlled thyristor type automatic voltage regulator. It is part of the excitation system for a brushless generator. Key specifications include jumper-selectable sensing input voltages (100-130 Vac or 190-264 Vac, 1 phase), a frequency range of 50-60 Hz, and a power input voltage of 100-264 V ac. The output is 82 V dc @ 200 V ac with a continuous current of 4 A dc and a transient current of 7.5 A for 10 seconds. It features independent terminals for power and voltage sensing, allowing excitation power to be derived from the stator or

an auxiliary winding. The AVR also includes under frequency protection, over excitation protection, and an external voltage adjustment of +/- 10% with a 1 k ohm 1 watt trimmer[1][3][5].

Pros:
– High integration of features in a small footprint using Surface Mount Technology…
– Optional feature for paralleling with multiple generators[3] – Independent terminals for power and voltage sensing, enhancing flexibility[3] – Precise voltage regulation with +/- 1.0% accuracy and low thermal drift of 0.03%…

Cons:
– Risk of counterfeit products, which can void the generator’s warranty or cause m…
– Specific installation requirements to avoid voiding the generator’s warranty[3] – Limited to use with specific generator models, such as UC224 or UC274 Stamford C…

AmoSolar | AS440-465M6-144 | Solar Panel Datasheet

Product Details: Crane OOD Solar Panel Series Monocrystalline photovoltaic modules with a power output of 250 Wp. The modules are made with high-efficiency monocrystalline silicon cells, have a maximum system voltage of 1000V, and are certified to withstand various environmental conditions.

Pros:
– High-efficiency monocrystalline silicon cells for better energy conversion
– Certified to withstand heavy wind and snow loads
– Suitable for a wide range of environmental conditions

Cons:
– Lower power output compared to some newer technologies like HJT or TOPCon
– May not perform as well in low-light conditions compared to bifacial modules

Stamford Generator Avr As440 Suppliers & Exporters in China

Stamford as440 schoner automatic voltage regulator

Product Details: Huron Red Oak Wirebrushed flooring is available in both solid and engineered hardwood. It features a distressed look with a natural color finish, adding a rustic charm to any room. The flooring has a light, pinkish undertone and less uniform grain patterns compared to white oak. It is durable and suitable for indoor, moisture-free zones. The wirebrushed finish exposes more of the wood’s texture, giving it a historical appearance without affecting its hardness or durability[1].

Pros:
– Versatile and attractive hardwood solution
– Durable and cost-effective
– Available in multiple widths and sizes
– Can be sanded and refinished multiple times
– Comes with a 3-year commercial and 25-year residential warranty[1] – Dimensionally stable and 100% waterproof in some vinyl versions[4] – Attached premium underlayment for noise reduction and warmth[4]

Cons:
– May require more maintenance due to the distressed finish
– Less uniform grain patterns which might not appeal to everyone[1] – Installation may require specific tools and expertise[4]

AVR AS440 For Stamford Alternators

Product Details: The Stamford AS440 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR) designed for brushless generators. It employs Surface Mount Technology (SMT) for high integration and a small footprint. Key features include voltage sensing from 100 VAC to 130 VAC or 190 VAC to 264 VAC, frequency operation at 50 Hz to 60 Hz, and a field output of 82 VDC at 4 A. The AVR provides load regulation of +/- 1.0% and compensates for load, speed, temperature, and power factor. It also includes under-frequency protection and over-voltage detection with a set point of 65 VDC. The operating temperature

range is -40 °C to +70 °C, and the storage temperature range is -55 °C to +80 °C[2][3][5].

Pros:
– Robust and reliable solid-state electronics
– Built-in relay for protective circuit operation
– Short circuit protection without current limitation
– High accuracy with +/- 1.0% load regulation
– Compensates for load, speed, temperature, and power factor
– Under-frequency and over-voltage protection
– Wide operating and storage temperature ranges

Cons:
– Output current de-rates by 5% per 1 °C above 60 °C
– Analogue input devices must be fully floating and galvanically isolated from gro…
– Potential for voltage hunting if stability settings are not optimized
– Requires manual adjustments for certain settings like under-frequency roll off p…

Comparison Table

Company	Product Details	Pros	Cons	Website
AVR AS440,Stamford AVR AS440	The AS440 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR) designed for brushless generators. It employs Surface Mount…	– High accuracy with +/- 1.0% voltage regulation – Fast response times: AVR response in 20 ms, field current to 90% in 80 ms, and m… – Under-frequen…	– Output current de-rates by 5% per °C above 60 °C – Fixed time delay for over-excitation protection (10-15 seconds) – Requires careful handling and i…	www.avrt.net
Cheap price China Original Stamford AVR As440 As480 …	Hongfu Motor offers original Stamford AVR (Automatic Voltage Regulator) systems, such as the AS440, AS480, SX440, SX460, and MX321, which are used in…	– Ensures stable and reliable power output – Compatible with multiple alternator brands – Features automatic voltage regulation and protection mechani…	– May require technical expertise for installation and maintenance – Dependent on the quality of the alternator and generator set – Potential for high…	www.hongfumotor.com
Stamford AVR As440 As450 As480 Sx440 Sx460 Mx341 …				www.wintpower.com
Stamford AVR – AS440 Voltage Regulator				www.genpowerusa.com
Automatic Voltage RegulatorAVR AS440 – China HS Code	The Stamford AS440 Automatic Voltage Regulator (AVR) is a half-wave phase-controlled thyristor type AVR designed for brushless generators. It employs…	– Robust and reliable solid-state electronics – Built-in test function and selectable power supply – Simple connection to the alternator – Fine contro…	– Output current de-rates by 5% per °C above 60°C – Requires careful handling due to sensitive electronic components – Specific installation and adjus…	hs.e-to-china.com
AVR AS440 China – Energy World	The Stamford AVR AS440 is a half-wave phase-controlled thyristor type automatic voltage regulator. It is part of the excitation system for a brushless…	– High integration of features in a small footprint using Surface Mount Technology… – Optional feature for paralleling with multiple generators[3] -…	– Risk of counterfeit products, which can void the generator’s warranty or cause m… – Specific installation requirements to avoid voiding the genera…	energyworld.mv
AmoSolar	AS440-465M6-144	Solar Panel Datasheet	Crane OOD Solar Panel Series Monocrystalline photovoltaic modules with a power output of 250 Wp. The modules are made with high-efficiency monocrystal…	– High-efficiency monocrystalline silicon cells for better energy conversion – Certified to withstand heavy wind and snow loads – Suitable for a wide…
Stamford Generator Avr As440 Suppliers & Exporters in China				china.tradeford.com
Stamford as440 schoner automatic voltage regulator	Huron Red Oak Wirebrushed flooring is available in both solid and engineered hardwood. It features a distressed look with a natural color finish, addi…	– Versatile and attractive hardwood solution – Durable and cost-effective – Available in multiple widths and sizes – Can be sanded and refinished mult…	– May require more maintenance due to the distressed finish – Less uniform grain patterns which might not appeal to everyone[1] – Installation may req…	huronflooring.com
AVR AS440 For Stamford Alternators	The Stamford AS440 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR) designed for brushless generators. It employs Surfa…	– Robust and reliable solid-state electronics – Built-in relay for protective circuit operation – Short circuit protection without current limitation…	– Output current de-rates by 5% per 1 °C above 60 °C – Analogue input devices must be fully floating and galvanically isolated from gro… – Potential…	www.chinageneratoravr.com

Frequently Asked Questions (FAQs)

Frequently Asked Questions About AS440 Factories in China

What is the AS440 Automatic Voltage Regulator (AVR) used for?

The AS440 AVR is a crucial component in the excitation system of brushless generators. It ensures stable output voltage by controlling the power fed to the exciter field, compensating for changes in load, speed, temperature, and power factor. This regulator is essential for maintaining the generator’s output voltage within specified limits.

Where can I find reliable manufacturers of AS440 AVRs in China?

You can find reliable manufacturers of AS440 AVRs through reputable platforms like Made-in-China.com, where companies such as Zhengzhou Atechi Machinery Co., Ltd., DIY Power System Co., Ltd., and Chongqing Longshine Import And Export Co., Ltd. are listed. These manufacturers are audited suppliers with ISO certifications, ensuring quality and reliability.

What are the key features of the AS440 AVR?

The AS440 AVR employs Surface Mount Technology (SMT) for high integration in a small footprint. It includes separate terminals for power and voltage sensing, under-speed protection, and a manual adjustment for the under-frequency roll-off point. It also allows for the connection of a remote voltage trimmer and has provisions for droop CT connection for parallel running with other generators.

How do I ensure the quality and authenticity of the AS440 AVR I purchase?

To ensure quality and authenticity, look for manufacturers with ISO 9001 and other relevant certifications. Check for reviews and ratings from previous customers, and opt for suppliers that offer secured trading and on-time delivery guarantees. Additionally, verify the product specifications and compare them with the original Stamford AS440 AVR details.

What is the typical pricing and minimum order quantity for AS440 AVRs from Chinese manufacturers?

The pricing for AS440 AVRs can vary, but you can generally expect to pay between $10 to $30 per piece, depending on the manufacturer. Most suppliers have a minimum order quantity (MOQ) of 1 piece, making it convenient for both small and large orders. However, some suppliers may have higher MOQs, so it’s best to check with the specific manufacturer.