|Place of Origin:||Chongqing China (Mainland)||Brand Name:||cummins||Model Number:||AS440,AVR AS440|
|Usage:||SVC||Phase:||Single Phase||Current Type:||DC|
Stamford AVR AS440 Frequency 50-60 Hz nominal Voltage 100-264 V ac 1 phase
gensets STANFORD AS440 automatic voltage regulator AVR)
Stamford AVR AS440
AS440 General 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.
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 a Newage 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.
Voltage Jumper selectable
100-130 Vac 1 phase or
190-264 Vac 1 phase
Frequency 50-60 Hz nominal
Voltage 100-264 V ac 1 phase
Frequency 50-60 Hz nominal
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)
+/- 1.0% (see note 2)
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
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 75 V dc
Time delay 10-15 seconds (fixed)
Vibration: 20-100 Hz 50mm/sec
100Hz -2kHz 3.3g
Operating temperature: -40 to +70o C (note 7)
Relative Humidity: 0-70o C 95% (note 8)
Storage temperature: -55 to +80o C
1FC4 Automatic voltage regulator of cummins diesel engine
more Automatic voltage regulator of cummins diesel engine
6GA2490 Automatic voltage regulator of cummins diesel engine
6GA2491 Automatic voltage regulator of cummins diesel engine
AS440 Automatic voltage regulator of cummins diesel engine
CF15A Automatic voltage regulator of cummins diesel engine
CF8A Automatic voltage regulator of cummins diesel engine
DVR2000E Automatic voltage regulator of cummins diesel engine
GAVR-15B Automatic voltage regulator of cummins diesel engine
MX321 Automatic voltage regulator of cummins diesel engine
because there are many factors concerning technical datas,
please consult with online service,
in order not to buy improper or unfitted parts.
if you buy improper parts,
it is unfair to you if you can't return,
but relative charge caused by return will increase cost too much.
loss and time waste caused by return or change,
will be far beyond the commodity itself.
the seller will suffer the loss too.
so, please take more time communicating with one sales staff on line at work time.
welcome to reach us through trade manager or qq.
there are price published on our website for your information.
you may consult with our online service about the price too.
it would be better to settle the price and other terms by contract.
hope we can help you saving more time on waiting for parts and repairing.
not only a lower price.
let your machine,
creat more value for you.
that should be our mutual focus.