AVR SX440 For Stamford Alternators
SX440 Alternator Automatic Voltage Regulator
SX440 Automatic Voltage Regulator is a half-wave phase-controlled thyristor type AVR and forms part of the excitation system for a brush-less generator. In addition to regulating the generator voltage, the AVR circuitry includes under-speed and sensing loss protection features. Excitation power is derived directly from the generator terminals. Positive voltage build up from residual levels 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 regulation of +/-1.0%.In addition to being powered from the main stator, the AVR also derives a sample voltage from the output windings for voltage control purposes. In response to this sample voltage ,the AVR controls the power fed to 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 output 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. 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.
SX440 Automatic Voltage Regulator Product Detail
| Place Of Origin | Taizhou China |
| Brand Name | YAMADA |
| Brand | Stamford |
| Model Number | SX440 |
| Type | Brushless |
| Phase | 1 |
| Self excited | Yes |
| Alternator Power | <150KW |
| AVR Can Material | PP,ABS,ROHS |
| Package | 50pcs per carton |
| Individual box Packing | Yes, We could print customer’s logo |
| Produce Ability | 3000pieces per day |
| Certification | CE,ROHS |
| Minimum Order Quantity | 2PCS |
| Delivery Time | 5-25days |
| Payment Term | Wire Transfer(TT),Western Union, Paypal, LC at sight |
| Samples | Charge |
| Samples Ship Cost | Customer pay, If you have courier No.(UPS,DHL,TNT),Please send it to us. |
| Loading Port | Ningbo ,Shanghai, Guangzhou |
| Harmonized System Code(HS) | 8503009090 |
| OEM Manufacture Service | Yes |
SX440 Automatic Voltage Regulator Technical specification
| INPUT: Voltage: 190-264Vac Frequency: 50-60Hz norminal Phase:1 Wire:2OUTPUT: Voltage: max 90V dc at 270V ac input Current : continuous 4A dc Intermittent 6A for 10 secs Resistance: 15 ohms minimum REGULATION: +/-1%(see note 1) THERMAL DRIFT:0.04% per deg. C change in AVR ambient(note 2) TYPICAL SYSTEM RESPONSE AVR response 20ms Filed current to 90% 60ms Machine Volts to 97% 300ms EXTERNAL VOLTAGE ADJUSTMENT:+/- 10% with 1 k ohm 1 watt trimmer(see note 3) UNDER FREQUENCY PROTECTION: Set point 95%Hz(see note 4) |
Slope 170% down to 30Hz UNIT POWER DISSIPATION: 12watts maximumBUILD UP VOLTAGE:4 Volts@AVR terminalsANALOGUE INPUT Maximum input +/-5v dc(see note 5) Sensilivity 1v for 5% Generator Volts(adjustable) Input resistance 1k ohm QUADRATURE DROOP INPUT 10 ohms burden Max.sensilivity:0.07A for 5% droop 0PF Max.input:0.33A ENVIRONMENTAL Vibration: 20-100Hz 50mm/sec 100Hz 2kHz 3.3g Operating temperature: -40 to +70C Relative Humidity:0-70C 95%(see note6) Storage temperature:-55 to +80C |
| NOTES 1.With 4% engine governing 2.After 10minutes 3.Applies to mod status S onwards. Generator de-rate may apply.Check with factory 4.Factory set, semi-sealed, jumper selectable. 5.Any deviceconnected to the analogue input must be fully floating (galvanically isolated from ground),with an insulation strength of 500V ac. 6.Non condensing. |
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