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Three Phase Automatic Voltage Stabilizer AVR R448 For Brushless Diesel Generator

Three Phase Automatic Voltage Stabilizer AVR R448 For Brushless Diesel Generator

Brand Name : ZOZHI
Model Number : R448
Certification : CE, ISO9001
Place of Origin : FUAN
Packaging Details : carton box
Purpose : Brushless Generator
Phase : Three Phase
Usage : generator
Cnc machining or not : CNC Machining
Material : Stainless Steel
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Diesel Generator Automatic Voltage Stabilizer AVR R448 Easy Spare Parts For Brushless Generator


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


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

Generator AVR R448
Voltage regulation± 0.5%
Remote voltage adjustment range± 5%
Short circuit capability3 x Irated for 10 seconds
Voltage sensing95 to 140 volts (50/60 Hz)
170 to 260 volts (50/60 Hz)
340 to 520 volts (50/60 Hz)
Response timeNormal (1 sec) for ± 20% voltage variation
Rapid (0.3 sec) for ± 20% voltage variation

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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. Free maintenance within 12 months guarantee.
2. We cooperate with customers to design and develop a new product.
3. We'd like to assist you in arranging delivery things, test things or others on your request.
4. Customize production.
1. We are a professional manufacturer with more than 13 years experience in Electric motor
2. We are Made in China Gold Supplier
3.we test the material before production and three to four times when producing to ensure the goods in good quality, also we produce according to request
4.we can be your OEM manufacturer with your authorization of brand.


1. Q: What’s the MOQ?
A: We accept one piece.

2. Q: Are you a factory or trading company?
A: We are a manufacturer.

3. Q: Can you accept to use our logo?
A: Yes, we can do OEM for you.

4. Q: What’s the warranty period?
A: 1 year.

5. Q: What are the terms of payment?

A: T/T. 30% deposit and 70% against the BL copy or 100% LC at sight.

Product Tags:

alternator generator parts


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