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New AVR AS440 Gensets Automatic Voltage Regulator for Generator Free Ship


       







       



   Product Description
 

AS440 is a half wave phase controlled thyristor type AVR and forms part of the excitation system for a brushless generator.  The design employs Surface Mount Technology (SMT) for high integration of features in a small footprint AVR.
 
Positive voltage build up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of the AVR. The power and voltage sensing circuits have separate terminals, allowing the excitation power to be derived directly from the stator winding for basic
applications or from an auxiliary winding if sustained short circuit performance is required.
 
The AVR is linked with the main stator windings and the exciter field windings to provide closed loop control of the output voltage with load regulation of +/- 1.0%.
 
The AVR voltage sensing terminals continuously sample the output windings for voltage control purposes. In response to this sample voltage, the AVR controls the power fed to the exciter field, and hence the main field, to maintain the machine output voltage within the specified limits, compensating for load, speed, temperature and power factor, of the generator.
 
A frequency measuring circuit continually monitors the generator output and provides under-speed protection of the excitation system, by reducing the output voltage proportionally with speed below a pre-settable threshold. A manual adjustment is provided for factory setting of the
under frequency roll off point, (UFRO). This can easily be changed to 50 or 60 Hz in the field by push-on link selection.
 
Over excitation conditions are limited to a safe period by a protection circuit within the AVR.

Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generator's output.

An analogue input is provided allowing connection to the Power Factor controller or other external devices with compatible output.

The AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators.

  Availability: Customize
  Usually Ships within 2-4days
   Any Questions: Chat with a Specialist >


 



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Item Specification:

SENSING INPUT

  • Voltage Jumper selectable
  •  100-130 Vac 1 phase or 190-264 Vac 1 phase
  •  Frequency 50-60 Hz nominal

POWER INPUT

  • Voltage 100-264 V ac 1 phase
  •  Frequency 50-60 Hz nominal

OUTPUT

  •  Voltage 82 V d.c. @ 200 V a.c.
  •  Current continuous 4A (see note 1).

transient 7.5A for 10 secs.

  • Resistance 15 ohms min

(10 ohms min when input volts is less than 175 ac)
REGULATION

  • +/- 1.0% (see note 2)

THERMAL DRIFT

  • 0.03% per deg. C change in AVR ambient (see note 3)

TYPICAL SYSTEM RESPONSE

  • AVR response 20 ms
  •  Filed current to 90% 80 ms
  •  Machine Volts to 97% 300 ms

EXTERNAL VOLTAGE ADJUSTMENT

  • +/-10% with 1 k ohm 1 watt trimmer (see note 4)
  •  Increasing resistance lowers voltage.

UNDER FREQUENCY PROTECTION

  • Set point 94 -98% Hz (see note 5)

UNIT POWER DISSIPATION

  • 12 watts maximum

BUILD UP VOLTAGE

  • 4 Volts @ AVR terminals

ANALOGUE INPUT

  • Maximum input +/- 5 Vdc (see note 6)
  •  Sensitivity 1V for 5% Generator Volts (adjustable)
  •  Input resistance 1k ohm

QUADRATURE DROOP INPUT

  • 10 ohms burden
  •  Max. sensitivity: 0.07 A for 5% droop 0PF
  •  Max. input: 0.33 A

OVER EXCITATION PROTECTION

  • Set point 65 V dc
  •  Time delay 10-15 seconds (fixed)

ENVIRONMENTAL

  • Vibration 20-100 Hz 50mm/sec
  •  100Hz – 2kHz 3.3g
  •  Operating temperature -40 to +70C (note 7)
  •  Relative Humidity 0-70C 95% (note 8)
  •  Storage temperature -55 to +80C

 
NOTES
1. De-rate by 12% if mounted in ‘portrait’ orientation.
2. With 4% engine governing.
3. After 2 minutes.
4. Generator de-rate may apply. Check with factory.
5. Factory set, semi-sealed, jumper selectable.
6. Any device connected to the analogue input must be fully
floating (galvanically isolated from ground), with an
insulation strength of 500V ac.
7. De-rate output current by 5% per degree C above 60C. 8. Non condensing.

Package Include:

  • 1 x New AVR AS440 Gensets Automatic Voltage Regulator for Generator Free Ship
  • 6 months warranty
  • 60 days money back
  • Life-time support.

    • Our specialists will be with you during shopping and after-sell. Professional advise and any technical problem will be provided. We will respond any question within 24-hour normally. Please allow longer time for weekend.

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    • We accept PayPal. Your payment is protected by Buyer Protection.
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    • No mailing payment will be accepted.

    How long is the delivery time ?

    Total delivery time is split into two parts: Processing and Shipping

    • Processing time
      • It takes normally 1-3 business days**. We will check your order, confirm your payment, verify your address and arrange your shipment during this period of time.
    • Shipping time
      • In general, the delivery time of each international courier is as below:
      • Economy Shipping:�10-21�business days in normal.
      • EMS:�5-15�business days in normal.

    **Reminder: Our warehouse do not process orders durning weekend or any United States public holidays. Therefore, please allow another 1-2 business days to process your weekend orders.**

    Do you ship to my country ?

    Yes, we do. Actually, we ship to any countries all over the world (As long as your country is on the earth).

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    Other Shipping Policy

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    How many months warranty do you provide ?

    3-24 months warranty is provided to our products. The length of the warranty depends on the nature of the products.

    What should I do if the item quality is bad / does not fit ?

    Normally any quality problems, please return to exchange a brand new one within 60 days or purchase. We will pay for the return postage.Kindly contact our customer support for more details.

    What should I do if the item is broken or dead on arrival ?

    For ensuring all the items are in good quality, we will test all products before the packages were sent out. If there are any problems with the item, kindly send us some images of the situation. And we are more than willing to assist you any further.

    What should I do if I choose to return the item for a full refund or replacement ?

    Please contact our customer support team before returning the defective item. Return items should include the original packaging and all accessories. Please make sure the item have NO man-made sabotage., otherwise, refund/exchange request will be rejrcted. DO REMEMBER SIGN YOUR RMA# on the front of the package., or your return won't be accepted.

    We will pay for the shipping cost of resending items as well.

    Where can I find a RMA ?

    RMA is Return Merchandise Authorization. Please contact our customer support and explain them your situation. They will try to solve the problem for you and issue you a RMA for returning the item back to us.