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
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|
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.
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