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SHENZHEN GRAIGAR TECHNOLOGY CO.,LTD. Supplier of NDT Instruments, Environmental Testing Equipment and Digital Metal Detector
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Automatic voltage regulator AS440 Stamford AVR FOR DIESEL Generator Spare Parts

Automatic voltage regulator AS440 Stamford AVR FOR DIESEL Generator Spare Parts

Brand Name : Stamford
Model Number : AS440
Certification : CE / Rohs
Place of Origin : China
MOQ : 2 pieces
Price : negotiation
Payment Terms : L/C, T/T, Western Union, MoneyGram, Paypal
Supply Ability : 3000 pieces per Month
Delivery Time : Within 3 working day after receiving the payment.
Packaging Details : Packaging with product box first, and then by Courier carton
Frequency : 50-60 Hz nominal
Regulation : ± 1.0%
Thermal drift : 0.03% per deg. C change in AVR ambient
Unitpower dissipation : 12 watts maximum
Build up voltage : 4 Volts @ AVR terminals
Operating temperature : 40degree under zero to 70 degree
Relative humidity 0-70°C : 95%
Storage temperature : Storage temperature -55 to +80C
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Automatic voltage regulator AS440 Stamford AVR FOR DIESEL Generator Spare Parts , Frenquency : 50-60Hz nominal

Stamford Generator Spare Parts AVR AS440 With Nupart Package

Stamford avr AS440 is use for 50-500kw ,brushless diesel generator compatible with n stamford products

Generator parts mainly include control box,fuel tank, start and control with battery protection, as well as emergency tank, etc


In addition to regulating the generator voltage,the avr circuitry includes under-speed and sensing loss protection features.Excitation power os derived directly from the generator terminals.

Positive voltage build up from residual level is ensured by the use of efficient semiconductors in the power circuitry of the avr.

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 regulator of +/-1.0%.

In addition to being powered from the main stator,the avr also derives a sample voltage from the output windings for coltage 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.

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


Sensing InputVoltageJumper selectable 100-130 Vac 1 phase
190-264 Vac 1 phase
Frequency50-60 Hz nominal
Power inputVoltage100-264 V ac 1 phase
Frequency50-60 Hz nominal
OutputVoltage82 V d.c. @ 200 V a.c.
CurrentContinuous 4A transient 7.5A for 10 secs
Resistance15 ohms min (10 ohms min when input
Volts is less than 175 ac)
Regulation± 1.0%
Thermal drift0.03% per deg. C change in AVR ambient
Typical system responseAVR response20 ms
Filed current to 90%80 ms
Machine Volts to 97%300 ms
External voltage adjustment±-10% with 1kohm 1 watt trimmer Increasing resistance lowers voltage.
Uuder frequency protectionSet point94 -98% Hz
Unitpower dissipation12 watts maximum
Build up voltage4 Volts @ AVR terminals
Analogue voltageMaximum input±5 Vdc
Sensitivity1V for 5% Generator Volts (adjustable)
Input resistance1k ohm
Quadrature droop input10 ohms burden
Max. sensitivity: 0.07 A for 5% droop 0PF
Max. input: 0.33 A
Over excitation protectionSet point65 V dc
Time delay10-15 seconds (fixed)
EnvironmentalVibration20-100 Hz
100Hz – 2kHz
50mm/secOperating temperature40degree under zero to 70 degree
3.3gRelative humidity 0-70°C95%
Storage temperatureStorage temperature -55 to +80C

Edited by Lisa Sun

Product Tags:

diesel generator parts


automatic voltage regulator for generator

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