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    Have been working together for more than 3 years very professional. all products work fine in our types of equipment. Thank you.
Contact Person : Semmy Wu
Phone Number : 05936532656
Whatsapp : +8613706040131

150kva Avr Easy Spare Parts Automatic Voltage Regulator Generator AVR AC R448

Place of Origin FUAN
Brand Name ZOZHI
Certification CE,RoHS,ISO9001
Model Number R448
Minimum Order Quantity 1PCS
Packaging Details carton box

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
GUM Type Hard Gum, Soft For Option Phase Single Phase/3 Phase
Function Replaced For Generator Avr Current Type AC
Warranty 1 Year Application Diesel Generator
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Product Description

150kva avr automatic voltage regulator Generator AVR AC Automatic Voltage Regulator R448



Product Description


Brushless Generator AVR AC Automatic Voltage Regulator R448 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator. In addition to regulating the generator voltage, the AVR circuitry includes under-speed and sensing loss protection to ensure safe, reliable control of the generator. Positive voltage builds up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR. Which is linked with the main stator windings and the exciter field windings to offer closed-loop control of the output voltage with load regulations of +/- 1.5%


Product Name R448
Voltage 95-480VAC, 3 phase
Voltage Max 160VDC at 120VAC input
Current Max 10A
PRESSURE-REGULATING ACCURACY <+/0.05%RMS with 4% engine governing


Load Adjustment Module (LAM):


On load impact, the rotation speed of the generator set decreases. When it passes below the preset frequency threshold, the LAM causes the voltage to drop by approximately 15%, and consequently, the amount of active load applied is reduced by approximately 25% until the speed reaches its rated value again


Specification of R448 AVR:

Voltage regulation ± 0.5%

Short circuit capability: 3 x Irated for 10 seconds (AREP or PMG excitation)

Voltage sensing:

Ø 95 to 140 volts (50/60 Hz) or

Ø 170 to 260 volts (50/60 Hz) or

Ø 340 to 520 volts (50/60 Hz),


Response time:

Normal (1 sec) for ± 20% voltage variation or Rapid (0.3 sec) for ± 20% voltage variation

Remote voltage adjustment range of  ± 5%


Adjustment capability:

The R448 AVR features the following adjustment capabilities (Please note that no adjustments should be made before careful consultation of the alternator installation and maintenance manual):

Ø Quadrature droop adjustment

Ø AVR Voltage adjustment

Ø Stability adjustment

Ø LAM Threshold ( under-speed ) adjustment

Ø Excitation ceiling adjustment

Ø Selection of single-phase or three-phase*

Ø voltage sensing

Ø Selection of normal or rapid response time

Ø 50 Hz or 60 Hz frequency option

Ø Remote voltage adjustment option

Ø LAM enable/disable option

Ø Alternator frame selection

Excitation system selection




1. Fireproof and heat-insulating soft rubber compared to ordinary soft rubber, we reach the military level.
2.High-temperature resistant shell, no deformation in a high-temperature environment, no cracking.
3.100% imported original IC.

150kva Avr Easy Spare Parts Automatic Voltage Regulator Generator AVR AC R448 0
150kva Avr Easy Spare Parts Automatic Voltage Regulator Generator AVR AC R448 1 Function
4. State-owned military factory resistance, high precision, a wide range of operating temperature, small drift, good stability.
5. Ultra-high 85°C Normal and stable operation, extremely fast response, fast decompression time, stable.
6.High-quality capacitance, good parameter consistency, and high reliability.


-11 years of production experience, over 11 times the mold improved, makes the body and parts in a perfect match.

-Nice outside and strong inside.


R448 AVR
150kva Avr Easy Spare Parts Automatic Voltage Regulator Generator AVR AC R448 3


-The factory used advanced equipment to produce, assemble, and inspect.

-To ensure high accuracy.

-And the HD panel was used to make everything showed clear.



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AS440 AS480 GAVR12  GAVR 12 EA05A
R449 R220 R438 R450

150kva Avr Easy Spare Parts Automatic Voltage Regulator Generator AVR AC R448 16

150kva Avr Easy Spare Parts Automatic Voltage Regulator Generator AVR AC R448 17



Guarantee for one year from shipped on board date. During the guarantee period, our company will provide free easy-damaged spare parts for problems caused by our quality of production or raw material, except the damageable spare parts caused by the customer's incorrect artificial operation. In addition, 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 the 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 using 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.