R450 Automatic Voltage Regulator AVR of Alternators

Product Details
Serial Number R450
Country of Origin Fujian China
Certificate ISO, CE
Payment & Shipping Terms
Minimum Order 1pcs
Average Delivery Time 1days
Payment Method TT, western union
Ability to Supply 20000pcs per month

 R450 Automatic Voltage Regulator AVR of Alternators

  • Model Number: R450
  • Brand Name: AOT
  • Warranty: 1 year
  • In stock: yes


R450 AVR 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 excitation, a permanent magnet generator (PMG) added to the alternator supplies the AVR with voltage.

On Application of load, the rotation speed of the generator set decreases, when it passes below the preset frequency threshold the LAM causes the voltage to drop by approximately13% or 25% and consequently the quantity of active load applied is reduced by approximately 25% to 45% until the speed reaches its rated value again. Hence the LAM can be used either to reduce the speed variation (frequency) and its duration for a given applied load or to increase the applied load probable for one-speed variation (turbocharged engine).

1. Leroy SomerAutomatic Voltage Regulator R450


2. Single or three-phase voltage sensing with an optional module.

3. Load acceptance module, PMG / AREP excitation system

4. Phase to phase voltage sensing.

5. Suitable for high levels of vibration and harsh environments      


Main characteristics:

Voltage regulation +/- 0.5% at steady-state and constant speed.

 Control by transistors means that the regulation quality is independent of the applied load.

Phase to phase voltage sensing.

Suitable for high levels of vibration and harsh environments.

Integrated "LAM" and " auto adaptative LAM" system to cope with load impacts applied to the engine

AREP or PMG excitation with normal or fast response.

Single or three-phase voltage sensing with an optional module.

Rotating switch facilitating selection.

 Voltage  230± 2V 
 Voltage Steady Range  ± 1V
 Starting Excitation Voltage  ≥1.5V 
 Loading Capacity  With 110% loading, the regulator can work normally
 Output Voltage Steady on hot and cool condition  ≤2V 
 Temperature float on Output Voltage  ≤2V 

R450 Automatic Voltage Regulator AVR





Guarantee for one year from shipped on board date. During the guarantee period, our company will provide the free easy-damaged spare part for problems caused by our quality of production or raw material, except the damageable spare parts caused by the customer's incorrect man-made operation. After expiration, our company provides cost spare parts for maintenance.

Our service: 

1. Directly factory sale
2. Quick response to 2-8hours, response rates over 92%
3. 24 hours phone call is available, feel free to contact us.
4. All goods produced by ourselves, we provide one-stop services from designing, printing to processing. Customers can provide the design according to your request and sample making, also we can advise how to make the products according to customers' target prices.


Q1. What are your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, 
we can pack the goods in your branded boxes after getting your authorization letters.

Q2. What are your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages 
before you pay the balance.

Q3. What are your terms of delivery?

Q4. How about your delivery time?
A: Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends 
on the items and the quantity of your order.

Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and 
the courier cost.

Q7. Do you test all your goods before delivery?
A: Yes, we have a 100% test before delivery

Q8: How do you make our business long-term and a good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, 
no matter where they come from.


R450 Automatic Voltage Regulator AVR

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Business Phone : 0593-6532656

Work Time :08:00-18:00(Beijing time)

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