Brushless Electric Alternator Regulators Stabilizers Avr R449 Voltage Protector Switch

Brushless electric Alternator Regulators Stabilizers Easy Spare Parts Automatic Voltage Protector Switch Avr R449

Product Description
R449 AVR

The circuitry of the R449 Voltage Regulator AVR provides closed-loop control of the alternator output voltage by regulating the exciter field current.
The R449 Leroy Somer AVR can be powered by either AREP or the PMG field excitation systems and is fitted as standard on the following alternators:
Ø 8100 Series Alternators
Ø 9100 Series Alternators
Compatible Alternators: LSA51.2, LSA53.1, LSA54

Key specifications
Technology	Analog
Excitation mode	SHUNT, AREP, PMG
Rated excitation current	7 A
Regulation accuracy (+/- %)	0.50%
Frequency range	10 – 100 Hz
Voltage setting range (+/- %)	5%
kU/F limitation	K = 1
Loss of sensing voltage	-
Over-excitation limitation	-
Short circuit current limitation	✓
Voltage droop	✓
Parallel operation between alternators	✓
Load Acceptance Module (LAM)	✓

Specification of R449 AVR:
Ø Steady-state voltage regulation ± 0.5%
Ø Short circuit capability: 3 x Irated for 10 seconds (AREP or PMG excitation)
Ø Voltage sensing:
0-110v Terminals = 95 to 140 volts (50/60 Hz) or
0-220v Terminals = 170 to 260 volts (50/60 Hz) or
0-380v Terminals = 340 to 520 volts (50/60 Hz)
Ø Response time:
Normal (1 sec) for ± 20% voltage variation or Rapid (0.3 sec) for ± 20% voltage variation
Ø Remote voltage adjustment range: ± 5%

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

Adjustment capability of R449 Alternator AVR:
The R449 Voltage Regulator features the following adjustment capabilities (Please note that no adjustments should be made before careful consultation of the alternator installation and maintenance manual):
n Quadrature droop adjustment
n Alternator output voltage adjustment
n Stability adjustment
n LAM Threshold (under-speed) adjustment
n Excitation ceiling adjustment
n Selection of single-phase or three-phase* voltage sensing
n Selection of normal or rapid response time
n 50 Hz or 60 Hz frequency option
n Remote voltage adjustment option
LAM enable/disable option

Other AVR Models We Provide:(Product increasing, some may not list below)

SX460 SX440 AS440 AS480 MX321 MX341 MX450...

R220 R230 R250 R438 R448 R449 R450 R450M R450T...

GAVR-8A GAVR-12A GAVR-15A GAVR-20A AVR-35A POW50A POW50B 703 704 701 AVR-100A...

M40FA640A M16FA655A...

VR6 K65-12B K125-10B AVC63-12B...

UVR6 SR7 DSR DER....

.....

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Guarantee:
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.
FAQ:
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.

About ZOZHI
Established in 2006, Fuan Zhongzhi Pump Co., Ltd. (Brand: ZOZHI) is a modern enterprise integrating R&D, production, sales, and service. We specialize in pump systems, high-efficiency motors, and diesel generators, delivering reliable solutions to industries worldwide.

Our Products
✅ Pumps: Peripheral, Centrifugal, Jet, Deep Well, Sewage Pumps
✅ Motors: Solid/Hollow Shaft AC Motors (Custom Designs Available)
✅ Generators: Diesel-Powered Backup Systems