China Supplier Leroy Somer AVR R448 Digital Automatic Voltage Regulator Genenrator AVR for Alternator Genset

• Conditions of Use: Marine, Land Use
• Usage: Emergency Crew, Standby Unit, Common Units
• Output Type: DC
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: R448
• Cooling Method: Air Cooled
• Installation Method: Portable
• Generator Type: Diesel Generator
• Warranty: 1 Year
• Language: Multiple Language
• Installation Method: Portable
• Weight: 1.5kg
• Transport Package: Carton
• Specification: 22*15*7.5cm
• Trademark: New
• Origin: China
• HS Code: 9032899090
• Production Capacity: 100000 Piece/ Year
• Package Size: 24.00cm * 16.00cm * 10.00cm
• Package Gross Weight: 1.600kg

Product Description

LeorySomer R448 AVR Automatic Voltage Regulator Genset Parts Replacement 
 

The circuitry of the R448 Automatic Voltage Regulator (AVR) provides closed loop control of the alternator output voltage by regulating the exciter field current. The primary winding has a voltage in ratio to that of the alternator (characteristic shunt), the next has a voltage in proportion to the stator current (compound characteristic: booster effect). Which is powered by two auxiliary windings which are independent of the voltage equal circuit. The power supply voltage is rectified and filtered before being used by the AVR monitoring transistor. With PMG excitatioin, a permanent magnet generator (PMG) added to the alternator supplies the AVR with voltage which is free of the main alternator winding. This is built-in at the rear of the machine and connected to the R448 AVR, and the ST9 jumper must be disconnected.

*Quadrature droop adjustment

*AVR Voltage adjustment

*Stability adjustment

*LAM Threshold (underspeed) adjustment

*Excitation ceiling adjustment

*Selection of single phase or three phase*

*voltage sensing

*Selection of normal or rapid response time

*50 Hz or 60 Hz frequency option

*Remote voltage adjustment option

*LAM enable/disable option

*Alternator frame selection

*Excitation system selection

Specificaion

Input voltage: 70-140V AC, (PMG, or auxiliary
winding, single, three phases)
Reaction is measured : 90-480V AC
MAX. output :DC 10A 125V
Function: Built-in low-speed , over excitation
LAM, REGULATION: +/-0.5%

Generator AVR R448
Voltage regulation	± 0.5%
Remote voltage adjustment range	± 5%
Short circuit capability	3 x Irated for 10 seconds
Voltage sensing	95 to 140 volts (50/60 Hz)
	170 to 260 volts (50/60 Hz)
	340 to 520 volts (50/60 Hz)
Response time	Normal (1 sec) for ± 20% voltage variation
	Rapid (0.3 sec) for ± 20% voltage variation

 


Why Choose Us
 

* High quality generator voltage regulator, long service life.

* Professional Factory directly supply, favourable price.

* Excellent service, any question is welcome to contact.

Company Profile 
 
Xiamen Hyper Electric Co., Ltd  have own three factories and each one over 10 years.  And now we have grown into a professional and reliable company producing and trading various kinds of Generator filed products..

One of one factory is specialized in Brushless Stamford Alternator manufacture from 6kva-2000kva and strictly follows the requirements of ISO9001-2008 quality management system, strives for perfect products and has a strong professional technology. 

Our second factory is focus on generator accessories, such as automatic voltage regulator , controller, battery charger, rectifier , governor etc.If you need any generator parts, we've got you covered! We have more parts than a Lego set, so you can build your perfect generator with ease!

Hey, did you know we have a containerized generator factory? It's a pretty big deal, and we've even worked with some well-known domestic listed companies and state-owned enterprises. So, if you need any advice or just want to learn more about our products, don't hesitate to give us a holler! We'd be thrilled to chat with you.

Therefore,, if you're in the generator industry, we've got you covered with the most professional and extensive product line out there.  Let's generate some power together!