New Leroy Somer Generator AVR Automatic Voltage Regulator R438, US $95.00 – Picture 0

New Leroy Somer Generator AVR Automatic Voltage Regulator R438, US $95.00 – Picture 1

New Leroy Somer Generator AVR Automatic Voltage Regulator R438, US $95.00 – Picture 2

New Leroy Somer Generator AVR Automatic Voltage Regulator R438, US $95.00 – Picture 3

New Leroy Somer Generator Avr Automatic Voltage Regulator R438

US $95.00

Shenzhen, China
Jan 30th

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New Leroy Somer Generator AVR Automatic Voltage Regulator R438 MODEL: AVR-438 FOR LEROY SOMER BRUSHLESS GENERATOR Product Description I.Specifications: For both AREP&PMG excitation systems,the alternator voltage regulator is the R438.With AREP excitation,the R438 electronic AVR is powered by two auxiliary winding which are independent of the voltage match circuit.The first winding has a voltage in proportion to that of the alternator,the second have a voltage in proportion to the stator current. The power supply voltage is rectified and filtered before being used by the AVR monitoring transistor.This consists of a "PMG"(permanent generator).This is fitted at the rear of the machinge and connected to the R438 AVR.The PMG supplies the AVR with constant voltage which is independent of the main alternator winding.As a result the machine has a short-circuit current capacity and good immunity to distrotions generated by the load.The AVR monitors and corrects the alternator output voltage by adjusting the exitation current.50/60Hz selection via the ST3 jumper. The LAM system is integrated in the R438 AVR as standard.Role of the "LAM(load adjustment module)"On application of a load,the rotation speed of the generator set decreases.When it passes below the preset frequenecy threshold,the LAM causes the voltage to drop by approximately 13% or 25% and consequently the amount of active load applied is reduced by approximately 25% to 50%,until the speed reaches its rated value again. Hence the LAM can be used either to reduce the speed variation(frequency) and its duration for a given applied load,or the increase the applied load possible for one speed variation(turbo-charged engine).To lowest requency in steady state.During load impacts,the function help the genset to return to its rated speed faster thanks to a gradual increase in voltage according to the principle: If the speed drops between 46 and 50Hz,the rated voltage follows a fast gradient as it is restored. If the speed drops below 46Hz,since the engine need more help,the voltage follows a slow gradient as it returns to the reference value. II.Characteristics: Voltage regulation +/-0.5% at steady state and constant speed Phase to phase voltage sensing Controls by transistor means the regulation quality is independant of load applied Integrated "LAM" system to cope with increased loads applied to the engine Suitable for high levels of viration and harsh environments The R438 is compatible with other modules giving additional functions Standard power supply: AREP or PMG Rated overload current: 8A-10s Electronic protection(overload,shortcircuit on opening of voltage sensing circuitexcitation overload current for 10 seconds then return to approximately 1A). Fuse: F1 on X1,X2.8A;slow-250V Voltage sensing: 5VA isolated via transformer 0-110V terminals=90-140V 0-220V terminals=170-260V 0-380V terminals=340-520V Voltage regulation +/-1% Normal or rapid response time via ST2 jumper Voltage adjustment via potertiometer P2 Current sensing(parallel operation): C.T. 2.5VA cl1,sencondary 1A(optional) Quadrature drop adjustment via potertiometer P1 Max,excitation current adjustment via P5 Applications to Alternators: LSA 42.2,43.2,44.2 Compatible with the AREP or PMG exitation system Edited by Miriya PAYMENT INFORMATION: 1.We can accept Credit Cards,Paypal,T/T,Escrow and so on. 2.The buyer is responsible for any tax and/or duty charged by their country. INTERNATIONAL SHIPPING: The package will be shipped by China Post or Epacket. After we shipped the parcel,we'll fill in the tracking number and inform you by e-mail.Please write the correct address and telephone number when you make orders,so the courier can contact you when they deliver the parcel to you. thanks WARRANTY INFORMATION: 1.All the products have been checked and packed in good condition before dispatch. 2.All the products with one year warranty. 3.If you find any quality problems,please send it back within 3 days,and we'll send you a new one or refund you the payment after we get the returned one. 4.Buyers have to pay for the return cost and we will pay the cost for resend 5.All products returned should be in new conditions. CONTACT US: Office Tel: 008675527541660 Cellphone: 008615967476828 1.A good feedback is very important for our store,if you feel satisfied with our products,please give us positive feedbacks. 2.Please contact us before leaving any negative or neutral feedback,We will work with you to solve any problems.

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Brand	OEM
Model	R438