DATAKOM AVR-12 Alternator Voltage Regulator

More details

DESCRIPTIONAVR-12 Voltage Regulator is an electronic device which lets the alternator to produce fixed output voltage. It has open chassis, resin molded design and is intended to be mounted in the alternator's terminal box. AVR-12 measures the voltage between one of the alternator phases and the neutral point and adjusts the DC voltage applied to the excitation winding until reaching the desired voltage. The output stage of the device is a Half Wave tyhristor output associated with a free wheeling diode. Basically the unit is compatible with all brushless type alternators. A stability adjustment potentiometer is also provided for this purpose. The AVR-12 has a special relay-less electronic circuit design. The required minimum residual voltage for build up is 5 V- AC. The unit does not include moving parts;  therefore it is able to operate in highly vibrating environments. The AVR-12 includes a low frequency protection circuit. This feature reduces the output voltage during overload or engine stop. Therefore the diesel engine is protected from excessive torque generated by high startup currents of large electrical equipments. Similarly, the diesel engine may be stopped under load without damage. The easy connection scheme of the device allows fast and easy replacement. FEATURESHalf-Wave tyhristor output0-10 amps. output current0-115 volts output voltageRelay-less circuit designLow frequency protectionBuilt in voltage adjustmentStability adjustmentRemote voltage adjustment featureEasy connection schemeCompatible with various types of alternators OPERATIONThe device operates on 230-volt phase-to-neutral voltage. The output voltage, as well as the internal supply voltage, is directly picked up from the input ensing voltage. The device needs 5 V-AC for startup.The half wave tyhristor output voltage is 115 volts maximum. During operation, the device continuously monitors the input voltage and increases/decreases the excitation voltage in order to maintain the input voltage to a constant value.The AVR-12 keeps the alternator voltage change in minimum limits in case of a load change, and helps to reach the required voltage value quickly. The regulation is P-I type, the proportional reaction is fast and the slow acting integral reaction helps the unit to recover the precise set voltage. The stability potentiometer adjusts the reaction speed of the device. This helps the unit to comply with a large variety of alternators.The AVR-12 is able to produce up to 12 amps continuous current output. The alternator voltage may be adjusted via the built in potentiometer. Also external voltage adjustment feature is provided, in this case the external potentiometer value shall be 1 kiloohms. The low frequency protection circuit shuts off the excitation voltage in order to prevent damage during engine stopping under load. The factory set value for the protection is 45Hz.The alternator EXCITATION terminals shall not be connected to any point but the unit. The NEUTRAL and EXCITATION (+) points are internally connected. INPUTS AND OUTPUTSPHASE-R: Alternator phase input.NEUTRAL: Alternator neutral input, internally connected to the Excitation(+) terminal.EXCITATION (+): Excitation winding (+) terminal, internally connected to the Neutral terminal.EXCITATION (- ): Excitation winding (-) terminal TECHNICAL CHARACTERISTICSPhases: single phase ;Voltage Adjustment Range: 210-250 Volts min ;Frequency: 50/60Hz ;Frequency Protection Adj. Range: 40-50Hz ;Output Voltage: 0-115 volts-DC at 230 volts ;Output Current: 10A continuous, 20A for 5sec forcing ;Residual Voltage For Build Up: 5 volts minimum ;Regulation: +/- 2% typical ;Power Output Stage: Half Wave tyhristor ;Internal Fusing: 10A (fast acting fuse) ;Operating temperature: -10°C (14°F) to 60°C (140°F) ;Storage temperature: -20°C (-4°F) to 80°C (176°F) ;Maximum humidity: 95% non-condensing ;Dimensions: 125x68x35mm (L x W x H) ;Fixing centers: 115mm, 2xM6 ;Weight: 200 grams ;  If there are Multiple Items in your order they may be Shipped Separately with some items arriving before  others. Please see the Actual Pictures.Any query,please let me know.PaymentPaymentPayable ToNotePayPalWe only accept Paypal payment Shipping Policy   Delivery  Time Expedited Shipping(FedEx/DHL/TNT/UPS): To USA 3-8 Workdays, To Other country 3-12  Workdays; Economy Shipping(Post/Airmail): To USA 7-25 Workdays , To Other countries 20-55 Workdays . But sometimes int'l delivery is highly depended on the courier company and local customs/duties. Shipping address We Only accept Paypal payment. *We are unable to ship to PO Boxes or APO/FPO  addresses Handing Time Items will be shipped within 1 to 3 business days upon payment received or  cleared. Note If you don't receive items over 30 business days , please notify  us.Delivery  TimeExpedited Shipping(FedEx/DHL/TNT/UPS): To USA 3-8 Workdays, To Other country 3-12  Workdays; Economy Shipping(Post/Airmail): To USA 7-25 Workdays , To Other countries 20-55 Workdays . But sometimes int'l delivery is highly depended on the courier company and local customs/duties.Shipping addressWe Only accept Paypal payment. *We are unable to ship to PO Boxes or APO/FPO  addresses Handing TimeItems will be shipped within 1 to 3 business days upon payment received or  cleared.NoteIf you don't receive items over 30 business days , please notify  us.Return Policy 1.We appreciate your business and offer an instant 30 days return  policy.( 30 days after receive the item). 2.Refund will be given as Money back after receiving the return parts(Buyer pays return shipping) The returned item  has to be in its original condition. 1.We appreciate your business and offer an instant 30 days return  policy.( 30 days after receive the item). 2.Refund will be given as Money back after receiving the return parts(Buyer pays return shipping) The returned item  has to be in its original condition. Please note 1.If you have any problem,complaint,advise,please leave us a message. 2.We will reply every message and solve your  problem within 24 hours(except holiday),Please don't worry. 3.If you have any problems or concerns whatever with your order or products, please message us and  give us a chance to assist you before you leave any feedback.-We believe we can produce a positive outcome to any situation and will work hard to earn your  praise. Contact usFor anything about product,  price, shipping or order status, please send email to:89good4u(at)gmail.com Please always include eBay Item#, your eBay username and email address in your  email.Feedback ?Feedback is very important to us. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your  concerns.