Description: AVR R448 Automatic Voltage Volt Regulator For Generator We have Generator AVR R448 to replace in our regulator stock! Replacement Models: R220, R230, R250, R438, R448, R449, R450 Original Modules: D510C, R120, R129, R250, R438, R449, R450, R450M, R450T, R630, R726, R731 The Brands / Part No. here are for reference purpose only, our parts can exactly replace the original ones. Part Numbers: AVR 330410089 Voltage Regulator AVR 922-124 Voltage Regulator AVR 922-124 Voltage Regulator The circuitry of the R448 Voltage Regulator AVR provides closed loop control of the alternator output voltage by regulating the exciter field current. The R448 AVR can be powered by Shunt, AREP or PMG field excitation systems and is fitted as standard on: 5000 Series Alternators 6000 Series Alternators 7000 Series Alternators 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 it's 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 prior to careful consultation of the alternator installation and maintenance manual): Ø Quadrature droop adjustment Ø AVR Voltage adjustment Ø Stability adjustment Ø LAM Threshold (underspeed) 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 Shipment term 1. We Ship to Worldwide, except APO/FPO 2. Economic shipping by china post / ePaket... Will take longer shipping time. 3. international shipping by DHL/UPS/Fedex.... 4. Orders processed timely after your payment. 5. We only ship to confirmed order addresses. Your order address MUST MATCH your address. Why choose us ? 1.Started export since the year of 2006,with quick response to serve the oversea customers 2.Have already passed the strict quality inspection of ISO9001:2000 quality management system 3.Strong R&D Team to design and test products 4.Professional designers and technicians to provide technical assitance 5.Strict quality control process with strict standards 6.Strong installation consulting support 7.Quick after-sale technical advice and guidance. Guarantee 1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number. 7.We do not repair or replace item with an expired warranty. 8.All emails will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your email or give us a call any time.
Price: 109.99 USD
Location: SHENZHEN
End Time: 2025-02-01T14:08:44.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Model: R448
MPN: Does Not Apply
Brand: KNOWTEK
Equipment Type: Voltage Regulator