AVR MX321 Automatic Voltage Regulator for Stamford Brushless Generator

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　 AVR MX321  Automatic Voltage Regulator for Stamford Brushless Generator 　 Brief introduction: 3 Phase Sensing Permanent  Magnet Generator type voltage regulator is a compatible replacement for Newage  Stamford MX321 and Onan 305-0823. MX321 is a three phase sensed Automatic Voltage Regulator and forms part of the  excitation system for a brushless generator. Excitation power is derived from a  three phased permanent magnet generator(PMG), to isolate the AVR control  circuits from the effects of nonlinear loads and to reduce radio frequency  interference on the generator terminals. Sustained generator short circuit  current is another feature of the PMG system. The AVR sense the voltage in the main generator winding and controls the  excitation to maintain the generator output voltage with the specified limits,  compensating for load, speed, temperature and power factor of the generator.  Three phase RMS sensing is employed for superior voltage regulation. Adjustable soft start circuitry is included to provide a smooth controlled build  up of generator output voltage. 　 Specification : 　 Voltage Regulation < ±0.5% RMS For Use In Parallel Operation RAMP, DIP, DWELL, DROOP, RMS, U/F, Over Voltage & Over Excitation Adjustment  Functions Over Exc. / Over Volt. & UFRO LED Indicators Current Limiting Function Sensing Input Voltage : 190-264V ac max, 2 or 3 phase Frequency : 50-60HZ nominal POWER INPUT Voltage : 170-220 V ac max, 3 phase,3 wire CURRENT: 3A/phase Frequency : 100-120HZ nominal Output Voltage : max 120V dc Current : continuous 3.7A dc Intermittent 6A for 10 secs Resistance : 15 ohms minimum REGULATION: +/-0.5% RMS with 4% engine governing THERMAL DRIFT: 0.02% per deg.C change in AVR ambient TYPICAL SYSTEM RESPONSE: AVR Respones : 10ms Filed current to 90% 80ms Machine Volts to 97% 300ms EXTERNAL VOLTAGE ADJUSTMENT: +/-10% with 5k ohm 1 watt trimmer UNDER FREQUENCY PROTECTION: Set point 95%HZ Slope: 100% -300% down to 30HZ Max dwell: 20% volts/S recovery UNIT POWER DISSIPATION: 18 watts maximum ANALOGUE INPUT: Maximum input +/-5V dc Sensitivity 1V for 5% Generator Volts(adjustable) Input resistance 1k ohm QUADRATURE DROOP INPUT: 10 ohms burden Max. sensitivity: 0.22A for 5% droop OPF Max. input:0.33A CURRENT LIMIT INPUT: 10 ohms burden Sensitivity range: 0.5-1A OVER VOLTAGE DETECTOR INPUT: Set point:300V, time delay:1 sec CB trip coil volts:10-30 vdc CB trip coil RESISTANCE: 20-60 ohms OVER EXCITATION PROTECTION: Set point:75vdc Time relay:8-15 sec Environmental: Vibration: 20-100HZ : 50mm/sec 100Hz 2kHz : 3.3g +70 C Relative Humidity 0-70C : 95% 　　1.Your valid phone number is  very necessary for the shipping, otherwise we can't guarantee that  the package would safely arrives. 2. Any Customs tax applied to this package should be covered by  buyers.　 　 What in  Package:1 x AVR MX321 Automatic Voltage  Regulator Contact Us: 1. We have always been trying to provide the best service and reliable products  for every customer, however, accident may happen sometimes, please contact us to  resolve any issue before leaving a negative feedback. 2. Please contact us by "Ask a question". Payment 1. Payment methods  accepted : Paypal   only. 2. Payment must be  received within 7  business days of  auction closing.   Shipping 1. We ship your  orders within 1-2  business days after  the payment  received. 2. Item shipped via  Singapore Post or  HongKong Post , It  takes about 7-14  business days (USA,CA,AU,UK).others  country 10-20  business  days(Brzil,India,RU),Exact  delivery time  depends on postal  process. 3. If you do not  receive your item(s)  by 30 business  days,Please feel  free to contact us  via ebay mail system  , we will try our  very best to resolve  any problems with  you    Return Policy 1. Return is  accepted within 14  days after the  buyer's receiving  the item. 2. If this item is  defective upon  receipt, customer  has up to 14 days  from date of receipt  for exchange of a  new one. 3. Unused/unopened  merchandise will be  fully credited.   Other Policies   We are not  responsible for any  custom duty or  import tax.   If you need we write  low price on  shipping bill, pls  leave message when  you make payment .   All emails will be  answered within 24  hours. If you do not  receive our reply,  please kindly  re-sent your email  and we will reply to  you as soon as  possible, Suggest  send eBay message to  us, That is easy to  find .