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SX440 Automatic Voltage Regulator Stamford avr for Brushless Generators

Place of Origin USA
Brand Name GSKA
Model Number SX440
Minimum Order Quantity 1-5 pieces
Price Negotiable
Packaging Details Carton box
Delivery Time Within 7 days after 100% payment
Payment Terms T/T,Western Union,Cash or L/C
Supply Ability 500 pieces per Month

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Product Description




SX440 Automatic Voltage Regulator Stamford avr for Brushless Generators




SX440 Automatic Voltage Regulator Stamford avr for Brushless Generators 0SX440 Automatic Voltage Regulator Stamford avr for Brushless Generators 1




SX440 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator. In addition to regulating the generator voltage, the AVR circuitry includes under speed and sensing loss protection to ensure safe, reliable control of the generator

The Propose employs surface mount technology (SMT) for high integration of features in a minute footprint AVR. Positive voltage build up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR. The control and voltage sensing circuits have separate terminals, allowing the excitation power to be resulting directly from the stator winding for necessary appliCAT-parts-partsions or from an auxiliary winding if sustained short circuit performance is essential. Which is linked with the main stator windings and the exciter field windings to offer closed loop control of the output voltage with load regulations of +/- 1%


* Stability adjustment

* Under frequency roll off adjustment

* Trim adjustment

* Optimum response selection

* Droop adjustment


Input Voltage 190-264V ac
Frequency 50-60 Hz nominal
Phase 1
Wire 2
Output Voltage max 90V dc at 207V ac input
Current continuous 4A dc, intermittent 6A for 10 secs
Resistance 15 ohms minimum
Regulation +/- 1.0%
Thermal Drift 0.04% per deg. C change in AVR ambient
Typical system response AVR response 20ms
Filed current to 90% 80 ms
Machine Volts to 97% 300ms
External voltage adjustment +/-10% with 1 k ohm 1 watt trimmer
Under frequency protection Set point 95% Hz
Slope 170% down to 30 Hz
Unit power dissipation 12 watts maximum
Build up voltage 4 Volts @ AVR terminals
Analogue Input Maximum input ±5V dc
Sensitivity 1v for 5%
Input resistance 1k ohm
Quadrature Droop Input 10 ohms burden
Max. sensitivity: 0.07 A for 5% droop 0PF
Max. input: 0.33A
Environmental Vibration 20-100 Hz,50mm/se
100Hz - 2kHz, 3.3g
Operating temperature -40 to +70 Deg. C
Relative Humidity 0-70 Deg. C 95%
Storage temperature -55 to +80 Deg. C




Generator AVR SX440 self excited Automatic avr controller,brushless type
avr board is a compatible replacement for Stamford regulator


Sensing Input Terminal 0-110V = 90~150V
Terminal 0-220V = 175~260V
Terminal 0-380V = 350~520V
Power Input Voltage 100~264 VAC, Single Phase
Output Voltage Max. 90 VDC at 207 VAC
Current Continuous 4 ADC, Intermittent 10A for 10 sec.
Thermal Drift 0.05% per °C change in AVR ambient
DROOP Input Max. input 0.33A
Burden 10 Ω
0.07A for 5% droop (PF=0)
Under Frequency Protection U/F Potentiometer 45~60 Hz
Voltage Regulation < ± 1% (with 4% engine governing)
External Volts Adjustment ±8% @ 1 KΩ
Voltage Build-up Residual volts at AVR terminal > 5 VAC
EMI Suppression Internal Electromagnetic Interference Filtering
Exciter Resistor DC Resistance 20~100 Ω
Analogue Input Max. Input ±5 VDC Input Resistance 1 KΩ
1V for 5% generator volts
Unit Power Dissipation Max. 12 Watt
Environment Vibration : 1.5 G @ 5~30 Hz , 5.0 G @ 30~500 Hz
Relative Humidity : < 95%
Operating Temperature : -40~60 °C
Storage Temperature : -40~85 °C
AVR Controls Functions VOLT : Voltage Adjustment
STAB : Stability Adjustment
U/F : UFRO Knee Point Set (U/F: Under Frequency Protection)
DROOP : Droop Adjustment
TRIM : Analogue Input Adjustment
DIP : U/V Rate Set


SX440 Automatic Voltage Regulator Stamford avr for Brushless Generators 2


sales 4000pcs/month the fastest transit time 2days!
inventory situation a lauge number of stocks operational advantages easy for operation
price Factory outlets ! Service answer all of your questions within 1day


Payment Term


1.We accept L/C,D/P,D/A, Alipay, West Union, TT. Cash.


2.All major Credit cards are accepted through secure payment processor ESCROW


Shipment Term






1. Guarantee:365days after selled.


2. During guarantee,the items share free repairs or replacement.


3. Customer is responsible for the freight come-and-go,and the custom tax.


4. You may consider to send the defective item with a economical way,and we send      back the repaired items with your new order together.


5. To save the cost,pls send the item back without packing.


6. Pls provide the defective appearance and related invoice number.