SX440 斯坦福发电机AVR说明书
斯坦福发电机SX460型AVR说明书
斯坦福发电机SX460型AVR说明书SX460 AUTOMATIC VOLTAGEREGULATOR (AVR)SPECIFICATION, INSTALLATION AND ADJUSTMENTS General description Technical specificationSX460 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (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 +/- 1.5%.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 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 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. INPUTVoltage Jumper selectable95-132V ac or190-264VacFrequency 50-60 Hz nominalPhase 1OUTPUTVoltage max 90V dc at 207V ac inputCurrent continuous 4 A dcIntermittent 6 A for 10 secsResistance 15 ohms minimumREGULATION+/- 1.5% (see note 1)THERMAL DRIFT0.05% per deg. C change in AVR ambient (note 2)TYPICAL SYSTEM RESPONSEAVR response 20 msFiled current to 90% 80 msMachine Volts to 97% 300 msEXTERNAL VOLTAGE ADJUSTMENT+/-10% with 1 k ohm 1 watt trimmer (see note 3)UNDER FREQUENCY PROTECTIONSet point 95% Hz (see note 4)Slope 170% down to 30 HzUNIT POWER DISSIPATION10 watts maximumBUILD UP VOLTAGE4 Volts @ AVR terminalsENVIRONMENTALVibration 20-100Hz 50mm/sec100Hz – 2kHz 3.3gOperating temperature -40 to +70°CRelative Humidity 0-70°C95% (see note 5)Storage temperature -55 to +80°CNOTES1. With 4% engine governing2. After 10 minutes.3. Applies to Mod status F onwards. Generator de-rate mayapply. Check with factory.4. Factory set, semi-sealed, jumper selectable5. Noncondensing.DESIGN DETAIL The main functions of the AVR are:Potential Divider and Rectifier takes a proportion of the generator output voltage and attenuates it. This input chain of resistors includes the range potentiometer and hand trimmer which adjust the generator voltage. A rectifier converts the a.c. into d.c. for further processing.The Amplifier (Amp) compares the sensing voltage to the Reference Voltage and amplifies the difference (error) to provide a controlling signal for the power devices. The Ramp Generator and Level Detector and Driver infinitely control the conduction period of the Power Control Devices and hence provides the excitation system with the required power to maintain the generator voltage within specified limits.The Stability Circuit provides adjustable negative ac feedback to ensure good steady state and transient performance of the control system.The Low Hz Detector measures the period of each electrical cycle and causes the reference voltage to be reduced approximately linearly with speed below a presettable threshold. A Light Emitting Diode gives indication of underspeed running.The Synchronising circuit is used to keep the Ramp Generator and Low Hz Detector locked to the generator waveform period.The Low Pass Filter prevents distorted waveforms affecting the operation of the AVR.Power Control Devices vary the amount of exciter field current in response to the error signal produced by the Amplifier. Suppression components are included to prevent sub cycle voltage spikes damaging the AVR components and also to reduce the amount of conducted noise on the generator terminals.The Power Supply provides the required voltages for the AVR circuitry.SUMMARY OF AVR CONTROLSCONTROL FUNCTION DIRECTIONVOLTS TO ADJUST GENERATOR OUTPUT VOLTAGE CLOCKWISE INCREASES OUTPUT VOLTAGE STABILITY TO PREVENT VOLTAGE HUNTING CLOCKWISE INCREASE THE DAMPING EFFECTUFRO TO SET THE UFRO KNEE POINT CLOCKWISE REDUCES THE KNEE POINTFREQUENCYADJUSTMENT OF AVR CONTROLSVOLTAGE ADJUSTMENTThe generator output voltage is set at the factory, but can be altered by careful adjustment of the VOLTS control on the AVR board, or by the external hand trimmer if fitted. Terminals 1 and 2 on the AVR will be fitted with a shorting link if no hand trimmer is required. Terminals L and L are linked only for special low voltage applications.CAUTION Do not increase the voltage above the rated generator voltage. If in doubt, refer to the rating plate mounted on the generator case.CAUTION Do not ground any of the hand trimmer terminals as these could be above earth potential. Failure to observe this could cause equipment damage.If a replacement AVR has been fitted or re-setting of the VOLTS adjustment is required, proceed as follows: CAUTION1. Before running generator, turn the VOLTS control fully anti-clockwise.2. Turn remote volts trimmer (if fitted) to midway position.3. Turn STABILITY control to midway position.4. Connect a suitable voltmeter (0-300V ac) across line to neutral of the generator.5. Start generator set, and run on no load at nominal frequency e.g. 50-53Hz or 60-63Hz.6. If the red Light Emitting Diode (LED) is illuminated, refer to the Under Frequency Roll Off (UFRO) adjustment.7. Carefully turn VOLTS control clockwise until rated voltage is reached.8. If instability is present at rated voltage, refer to stability adjustment, then re-adjust voltage if necessary.9. Voltage adjustment is now completed.TD_SX460.GB_05.03_02PO Box 17 ? Barnack Road ? Stamford ? Lincolnshire ? PE9 2NBTel: 00 44 (0)1780 484000 ? Fax: 00 44 (0)1780 484100Website: /doc/eb97771a4431b90d6c85c79c.html2003 Newage International Limited.Reprinted with permission of N.I. only. Printed in England.STABILITY ADJUSTMENTThe AVR includes a stability or damping circuit to provide good steady state and transient performance of the generator. The correct setting can be found by running the generator at no load and slowly turning the stability control anti-clockwise until the generator voltage starts to become unstable.The optimum or critically damped position is slightly clockwise from this point (i.e. where the machine volts are stable butclose to the unstable region).UNDER FREQUENCY ROLL OFF (UFRO) ADJUSTMENTThe AVR incorporates an underspeed protection circuit which gives a volts/Hz characteristic when the generator speed falls below a presettable threshold known as the "knee" point.The red Light Emitting Diode (LED) gives indication that the UFRO circuit is operating.The UFRO adjustment is preset and sealed and only requires the selection of 50 / 60Hz using the jumper link.For optimum setting, the LED should illuminate as the frequency falls just below nominal, i.e. 47Hz on a 50Hz system or57Hz on a 60Hz system.。
柴油发电机组中文说明书
斯坦福柴油发电机组使用说明书上海斯坦福动力设备有限公司1.概述斯坦福柴油发电机组采用柴油动力，为四冲程、水冷、直列、直喷、带涡轮增压柴油机，或者根据客户制定要求进行匹配，可靠性好、寿命长、具有良好的配套适应性，可满足客户的不同要求。
适用于工矿、工地、通讯、小型城镇作为流动或固定电源,供给动力、照明、通讯或其它应急备用电源。
本说明书主要对斯坦福系列柴油发电机组的工作条件、机组结构、性能指标及安装使用和维护作简要说明。
2.工作条件1.机组在下列标准状况下应能输出标定功率，标定功率分常用功率和备用功率两种。
常用功率是指机组能以此功率连续工作12h，其中包括过载10%工作1h；备用功率是指机组能以此功率连续工作1h，无超负载能力，备用功率在机组型号后用S表示。
大气压力100kPa。
环境温度为298K（25℃）。
空气相对湿度为30％。
若超过上述规定的条件连续运行时，（在按使用说明书规定进行保养的条件下）其输出功率按柴油机规定功率的90％修正后折算的电功率，但此电功率最大不得超过发电机的额定功率，当使用条件与该规定不符时，其输出功率应为按GB/T 6072.1-2000规定的方法修正柴油机功率后折算的电功率，但此电功率最大不得超过发电机的额定功率。
2.机组在下列条件下应能输出规定功率（允许功率修正）并可靠地工作。
a) 海拔高度不超过4000m。
b) 环境温度为（5～40）℃。
c) 空气相对湿度为90％(25℃时)。
当试验海拔高度超过1000m(但不超过4000m时)，环境温度的上限值按海拔高度每增加100m降低0.5℃修正。
3.机组只适宜在室内或具有避免日晒雨淋的场合使用（有防雨性能的箱式机组除外），机组不适宜在空气中带有导电尘埃、腐蚀性气体的场合使用。
3．警告与安全3.1 警告1.机组安装和移动时，须小心轻放，不得碰撞或翻转。
2.机组操作人员须遵守各项安全操作规程，包括操作手册和设备上的警示标识，否则有可能造成机组和人身的损害。
AS440,STAMFORD,AS440,英文说明书
AS440 AUTOMATIC VOLTAGEREGULATOR (AVR)SPECIFICATION INSTALLATION AND ADJUSTMENTS General description Technical specificationAS440 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. SENSING INPUTVoltage Jumper selectable100-130 Vac 1 phase or190-264 Vac 1 phaseFrequency 50-60 Hz nominalPOWER INPUTVoltage 100-264 V ac 1 phaseFrequency 50-60 Hz nominalOUTPUTVoltage 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 inputvolts is less than 175 ac) REGULATION+/- 1.0% (see note 2)THERMAL DRIFT0.03% per deg. C change in AVR ambient (see note 3) TYPICAL SYSTEM RESPONSEAVR response 20 msFiled current to 90% 80 msMachine 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 PROTECTIONSet point 94 -98% Hz (see note 5)UNIT POWER DISSIPATION12 watts maximumBUILD UP VOLTAGE4 Volts @ AVR terminalsANALOGUE INPUTMaximum input +/- 5 Vdc (see note 6)Sensitivity 1V for 5% Generator Volts (adjustable)Input resistance 1k ohmQUADRATURE DROOP INPUT10 ohms burdenMax. sensitivity: 0.07 A for 5% droop 0PFMax. input: 0.33 AOVER EXCITATION PROTECTIONSet point 65 V dcTime delay 10-15 seconds (fixed) ENVIRONMENTALVibration 20-100Hz 50mm/sec100Hz – 2kHz 3.3gOperating temperature -40 to +70C (note 7)Relative Humidity 0-70C 95% (note 8)Storage temperature -55 to +80CNOTES1. 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 fullyfloating (galvanically isolated from ground), with aninsulation strength of 500V ac.7. De-rate output current by 5% per degree C above 60C.8. Noncondensing.DESIGN DETAIL The main functions of the AVR are:Potential Divider and Rectifier takes a proportion of the generator output voltage and attenuates it. The potential divider is adjustable by the AVR Volts potentiometer and external hand trimmer (when fitted). The output from the droop CT is also added to this signal. A rectifier converts the a.c. input signal into d.c. for further processing.The DC Mixer adds the Analogue input signal the Sensing signal.The Amplifier (Amp) compares the sensing voltage to the Reference Voltage and amplifies the difference (error) to provide a controlling signal for the power devices. The Ramp Generator and Level Detector and Driver infinitely control the conduction period of the Power Control Devices and hence provides the excitation system with the required power to maintain the generator voltage within specified limits.The Stability Circuit provides adjustable negative ac feedback to ensure good steady state and transient performance of the control system.The Low Hz Detector measures the period of each electrical cycle and causes the reference voltage to be reduced approximately linearly with speed below a presettable threshold. A Light Emitting Diode gives indication of underspeed running.The Synchronising circuit is used to keep the Ramp Generator and Low Hz Detector locked to the generator waveform period.The Low Pass Filter prevents distorted waveforms affecting the operation of the AVR control circuit.The Short Circuit Detector senses the presence of a short circuit on the generator output and forces the Power Control Devices into full conduction. This only occurs when the AVR is powered from an auxiliary winding.Power Control Devices vary the amount of exciter field current in response to the error signal produced by the Amplifier.Suppression components are included to prevent sub cycle voltage spikes damaging the AVR components and also to reduce the amount of conducted noise on the generator terminals.The Over Excitation Detector continuously monitors the exciter field voltage and provides signals, to collapse the output voltage if an over excitation condition persists for the specified time period.The Power Supply provides the required voltages for the AVR circuitry.Hand Trimmer Analogue Input DroopADJUSTMENT OF AVR CONTROLSVOLTAGE ADJUSTMENTThe generator output voltage is set at the factory, but can be altered by careful adjustment of the VOLTS control on the AVR board, or by the external hand trimmer if fitted. If major adjustment is necessary or you lose stability, follow the ‘VOLTAGE SETUP PROCEDURE’.Terminals 1 and 2 on the AVR will be fitted with a shorting link if no hand trimmer is required. Terminals La and Lb are linked only for special low voltage applications.WARNING! Do not increase the voltage above the rated generator voltage. If in doubt, refer to the rating plate mounted on the generator case.WARNING! Do not ground any of the hand trimmer terminals as these could be above earth potential. Failure to observe this could cause equipment damage.WARNING!If a replacement AVR has been fitted or re-setting of the VOLTS adjustment is required, turn the VOLTS control fully anti-clockwise before running generator. VOLTAGE SETUP PROCEDUREFor major adjustments and replacing the AVR.Read and understand this procedure before attempting to follow it.1. Before running generator, turn the VOLTS control fully anti-clockwise.2. Turn remote volts trimmer (if fitted) to midway position.3. Turn STABILITY control to midway position.4. Connect a suitable voltmeter (0-300V ac) acrossline to neutral of the generator.5. Start generator set, and run on no load at nominal frequency e.g. 50-53Hz or 60-63Hz.6. If the red Light Emitting Diode (LED) is illuminated, refer to the Under Frequency Roll Off (UFRO) adjustment.7. Carefully turn VOLTS control clockwise until rated voltage is reached.8. If instability is present at rated voltage, refer to stability adjustment, then re-adjust voltage if necessary.9. Voltage adjustment is now completed.STABILITY ADJUSTMENTThe AVR includes a stability or damping circuit to provide good steady state and transient performance of the generator.A switch is provided to change the response of the stability circuit to suit different frame size generators and applications. The table shows the options available.The slow response settings may prove helpful in reducing lamp flicker.The correct setting of the Stability adjustment can be found by running the generator at no load and slowly turning the stability control anti-clockwise until the generator voltage starts to become unstable.The optimum or critically damped position is slightly clockwise from this point (i.e. where the machine volts are stable but close to the unstable region).UNDER FREQUENCY ROLL OFF (UFRO) ADJUSTMENTThe AVR incorporates an underspeed protection circuit which gives a volts/Hz characteristic when the generator speed falls below a presettable threshold known as the "knee" point.The red Light Emitting Diode (LED) gives indication that the UFRO circuit is operating.The UFRO adjustment is preset and sealed and only requires the selection of 50/60Hz using the jumper link.For optimum setting, the LED should illuminate as the frequency falls just below nominal, i.e. 47Hz on a 50Hz system or 57Hz on a 60Hz system.DROOP ADJUSTMENTGenerators intended for parallel operation are fitted with a quadrature droop C.T. which provides a power factor dependent signal for the AVR. The C.T. is connected to S1, S2 on the AVR.The DROOP adjustment is normally preset in the works to give 5% voltage droop at full load zero power factor. Clockwise increases the amount of C.T. signal injected into the AVR and increases the droop with lagging power factor (cos Ø). With the control fully anti-clockwise there is no droop. TRIM ADJUSTMENTAn analogue input (A1 A2) is provided to connect to a Power Factor Controller or other devices. It is designed to accept dc signals up to +/- 5 volts.WARNING!Any devices connected to this input must be fully floating and galvanically isolated from ground, with an insulation capability of 500 Vac. Failure to observe this could result in equipment damage.The dc signal applied to this input adds to the AVR sensing circuit. A1 is connected to the AVR 0 volts. Positive on A2 increases excitation. Negative on A2 decreases excitation.The TRIM control allows the user to adjust the sensitivity of the input. With TRIM fully anti-clockwise the externally applied signal has no effect. Clockwise it has maximum effect.Normal setting is fully clockwise when used with a Power Factor Controller.OVER EXCITATION (EXC TRIP) ADJUSTMENTThe adjustment is set and sealed in the works and should not be altered.An over excitation condition is indicated on the common LED which also indicates under speed running.The generator must be stopped to reset an over excitation condition.Barnack Road • Stamford • Lincolnshire • PE9 2NB Tel: 00 44 (0)1780 484000 • Fax: 00 44 (0)1780 484100。
自动化柴油发电机组使用说明书g
2010年1月20日 共22页 第3页
4.3：控制器按键功能描述
手动键 按下此键,控制器工作在手动模式;此时机组的工作模式必须在自动状态.在 此模式下,你可以通过控制器面板上的起、停按键起停机组
2010年1月20日 共22页 第2页
4. 操作
4.1：自动化机组机组基本控制面板介绍
柴油机转速控制器为机械调速 器的自动化机组所用控制面板
柴油机转速控制器为电子调速 器的自动化机组所用控制面板
4.2：操作面板开关描述
钥匙 电源 开关
手动 自动 转换 开关
应急 起动
怠速 运行 开关
升速 降速 开关
12．电子调速器使用检修..............................................................................19 (1)：电子调速器接线..................................................................................19 (2)：电子调速器的调整..............................................................................19 (3)：电子调速器常见故障及处理办法........................................................20
８．控制器参数设置方法.........................................................................12
9．自动化机组常见故障及排除...................................................................5
斯坦福STAMFORD发电机简介
E ngineering 工 程
新时代公司总部/工 厂(斯 坦 福)
无锡新时代交流发电机有限公司
无锡新时代成立时间-- 1996年3月
所有权:
新时代国际有限公司 - 75% 江苏海星电机集团有限公司 - 25%
工厂开业时间 - 1997年6月
二零零二年七月，无锡新时代成为一家独资公司
世界上的新时代公司
辅助绕组励磁的AVR控制系统
旋转整流装置 励磁磁场 主定子 线圈 风扇 机座
N
轴承 N
S 励磁转子 S
轴伸
主转子(磁场)
电压感应 AVR 功率输入
电源引出线
稳态电压调整率 +/- 1%或±1.5%
永磁机励磁的AVR控制系统
主要特点 主要特点
N N
极小的调整率
并联运行 可装功率因数控制器
N S
负载减荷
无锡新时代交流发电机业务情况
百万人民币
700 600 500 400 300 200 100 0 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
无锡新时代业务情况
台 45000
40000 35000 30000 25000 20000 15000 10000 5000 0 1997 1999 2001 2003 2005 West
斯坦福(Stamford) BC16 和 BC18
6.5kW 至 32kW (50Hz)
自励或永磁机励磁 AVR 有两种安装位置
斯坦福(Stamford) UC224 和 UC274
34kW 至 160kW (50Hz)
自励或永磁机励磁 AVR 有两种安装位置
SX440自动电压调节器（AVR）规格、安装和调节说明书
DESIGN DETAILSX440 AUTOMATIC VOLTAGEREGULATOR (AVR)SPECIFICATION, INSTALLATION AND ADJUSTMENTS General description Technical specificationSX440 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (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 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 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. INPUTVoltage 190-264VacFrequency 50-60 Hz nominalPhase 1Wire 2OUTPUTVoltage max 90V dc at 207V ac inputCurrent continuous 4A dcIntermittent 6A for 10 secsResistance 15 ohms minimumREGULATION+/- 1% (see note 1)THERMAL DRIFT0.04% per deg. C change in AVR ambient (note 2)TYPICAL SYSTEM RESPONSEAVR response 20msFiled current to 90% 80 msMachine Volts to 97% 300msEXTERNAL VOLTAGE ADJUSTMENT+/-10% with 1 k ohm 1 watt trimmer (see note 3)UNDER FREQUENCY PROTECTIONSet point 95% Hz (see note 4)Slope 170% down to 30 HzUNIT POWER DISSIPATION12 watts maximumBUILD UP VOLTAGE4 Volts @ AVR terminalsANALOGUE INPUTMaximum input +/- 5V dc (see note 5)Sensitivity 1v for 5% Generator Volts (adjustable)Input resistance 1k ohmQUADRATURE DROOP INPUT10 ohms burdenMax. sensitivity: 0.07 A for 5% droop 0PFMax. input: 0.33AENVIRONMENTALVibration 20-100Hz 50mm/sec100Hz – 2kHz 3.3gOperating temperature -40 to +70 o CRelative Humidity 0-70 o C 95% (see note 6)Storage temperature -55 to +80 o C NOTES1. With 4% engine governing.2. After 10 minutes.3. Applies to Mod status S onwards. Generator de-ratemay apply. Check with factory.4. Factory set, semi-sealed, jumper selectable.5. Any device connected to the analogue input must befully floating (galvanically isolated from ground), with an insulation strength of 500V ac.6. Noncondensing.DESIGN DETAILThe main functions of the AVR are:Potential Divider and Rectifier takes a proportion of the generator output voltage and attenuates it. The potential divider is adjustable by the AVR Volts potentiometer and external hand trimmer (when fitted). The output from the droop CT is also added to this signal. An isolating transformer is included allowing connection to various winding configurations. A rectifier converts the a.c. input signal into d.c. for further processing.The Sensing Loss Detector is an electronic changeover switch, which normally connects the Amplifier (Amp) to the Voltage Sensing input and automatically changes over to the Power input when the normal sensing voltage is lost.The DC Mixer adds the Analogue input signal the Sensing signal.The Amplifier (Amp) compares the sensing voltage to the Reference Voltage and amplifies the difference (error) to provide a controlling signal for the power devices. The Ramp Generator and Level Detector and Driver infinitely control the conduction period of the Power Control Devices and hence provides the excitation system with the required power to maintain the generator voltage within specified limits.The Stability Circuit provides adjustable negative ac feedback to ensure good steady state and transient performance of the control system.The Low Hz Detector measures the period of each electrical cycle and causes the reference voltage to be reduced approximately linearly with speed below a presettable threshold. A Light Emitting Diode gives indication of underspeed running.The Synchronising circuit is used to keep the Ramp Generator and Low Hz Detector locked to the generator waveform period.The Low Pass Filter prevents distorted waveforms affecting the operation of the AVR control circiutPower Control Devices vary the amount of exciter field current in response to the error signal produced by the Amplifier.Suppression components are included to prevent sub cycle voltage spikes damaging the AVR components and also to reduce the amount of conducted noise on the generator terminals..The Power Supply provides the required voltages for the AVR circuitry.Hand Trimmer Analogue Input DroopFITTING AND OPERATINGSUMMARY OF AVR CONTROLSCONTROL FUNCTION DIRECTIONVOLTS TO ADJUST GENERATOR OUTPUT VOLTAGE CLOCKWISE INCREASES OUTPUT VOLTAGE STABILITY TO PREVENT VOLTAGE HUNTING CLOCKWISE INCREASE THE DAMPING EFFECTUFRO TO SET THE UFRO KNEE POINT CLOCKWISE REDUCES THE KNEE POINTFREQUENCYDROOP TO SET THE GENERATOR DROOP TO 5% AT 0PF CLOCKWISE INCREASES THE DROOPVTRIM TO OPTIMISE ANALOGUE INPUT SENSITIVITY CLOCKWISE INCREASES THE GAIN OR SENSITIVITY ADJUSTMENT OF AVR CONTROLSVOLTAGE ADJUSTMENTThe generator output voltage is set at the factory, but can be altered by careful adjustment of the VOLTS control on the AVR board, or by the external hand trimmer if fitted. Terminals 1 and 2 on the AVR will be fitted with a shorting link if no hand trimmer is required.CAUTION Do not increase the voltage above the rated generator voltage. If in doubt, refer to the rating plate mounted on the generator case.CAUTION Do not ground any of the hand trimmer terminals as these could be above earth potential. Failure to observe this could cause equipment damage.If a replacement AVR has been fitted or re-setting of the VOLTS adjustment is required, proceed as follows: CAUTION1. Before running generator, turn the VOLTS control fully anti-clockwise.2. Turn remote volts trimmer (if fitted) to midway position.3. Turn STABILITY control to midway position.4. Connect a suitable voltmeter (0-300V ac) acrossline to neutral of the generator.5. Start generator set, and run on no load at nominal frequency e.g. 50-53Hz or 60-63Hz.6. If the red Light Emitting Diode (LED) is illuminated, refer to the Under Frequency Roll Off (UFRO) adjustment.7. Carefully turn VOLTS control clockwise until rated voltage is reached.8. If instability is present at rated voltage, refer to stability adjustment, then re-adjust voltage if necessary.9. Voltage adjustment is now completed.FITTING AND OPERATINGTD_SX440 AVR_03.06_04_GBBarnack Road • Stamford • Lincolnshire • PE9 2NB Tel: 00 44 (0)1780 484000 • Fax: 00 44 (0)1780 484100© 2006 Cummins Generator Technologies Limited.STABILITY ADJUSTMENTThe AVR includes a stability or damping circuit to provide good steady state and transient performance of the generator.The correct setting can be found by running the generator at no load and slowly turning the stability control anti-clockwise until the generator voltage starts to become unstable.The optimum or critically damped position is slightly clockwise from this point (i.e. where the machine volts are stable but close to the unstable region).OPTIMUM RESPONSE SELECTIONThe stability selection ‘jumper’ should be correctly linked, A-B, B-C or A-C at the bottom of the board for the frame size of the generator, (see drawing).UNDER FREQUENCY ROLL OFF (UFRO) ADJUSTMENTThe AVR incorporates an underspeed protection circuit which gives a volts/Hz characteristic when the generator speed falls below a presettable threshold known as the "knee" point.The red Light Emitting Diode (LED) gives indication that the UFRO circuit is operating.The UFRO adjustment is preset and sealed and only requires the selection of 50 / 60Hz using the jumper link.For optimum setting, the LED should illuminate as the frequency falls just below nominal, i.e. 47Hz on a 50Hz system or 57Hz on a 60Hz system.DROOP ADJUSTMENTGenerators intended for parallel operation are fitted with a quadrature droop C.T. which provides a power factor dependent signal for the AVR. The C.T. is connected to S1, S2 on the AVR.The DROOP adjustment is normally preset in the works to give 5% voltage droop at full load zero power factor.Clockwise increases the amount of C.T. signal injected into the AVR and increases the droop with lagging power factor (cos Ø). With the control fully anti-clockwise there is no droop.TRIM ADJUSTMENTAn analogue input (A1 A2) is provided to connect to the Newage Power Factor Controller or other devices. It is designed to accept dc signals up to +/- 5 volts.CAUTION Any devices connected to this input must be fully floating and galvanically isolated from ground, with an insulation capability of 500 Vac. Failure to observe this could result in equipment damage.The dc signal applied to this input adds to the AVR sensing circuit. A1 is connected to the AVR 0 volts. Positive on A2 increases excitation. Negative on A2 decreases excitation.The TRIM control allows the user to adjust the sensitivity of the input. With TRIM fully anti-clockwise the externally applied signal has no effect. Clockwise it has maximum effect.Normal setting is fully clockwise when used with a Newage Power Factor Controller.。
AS440自动电压调节器中文版说明书
AS440自动电压调节器中文说明规范安装和调整概述AS440是半波晶闸管相控型AVR和形式的一部分，用于无刷发电机的励磁系统。
该设计采用了表面贴装技术（SMT）的高集成度的特点，占地面积小的AVR。
通过在AVR的电源电路中使用有效的半导体来确保从剩余电平积累的正电压。
电源和电压检测电路具有独立的端子，如果需要持续的短路性能，可以直接从定子绕组获得励磁功率，或者从辅助绕组获得励磁功率。
AVR与主定子绕组和励磁线圈的励磁绕组相连接，以+/-1.0%的负载调节提供闭环控制输出电压。
AVR电压传感终端连续采样输出绕组用于电压控制目的。
为了响应这个采样电压，AVR控制供给励磁机磁场的功率，因此主磁场保持发电机输出电压在规定的范围内，补偿发电机的负载、速度、温度和功率因数。
频率测量电路持续地监控发电机的输出，并提供对励磁系统的低速度保护，通过以低于可设定的阈值的速度来降低输出电压。
对频率下滚点的出厂设置进行了手动调整(UFRO)。
这可以很容易地在字段中按下推链接的选择来更改为50或60Hz。
过励磁条件受限于AVR保护电路的安全范围内。
提供了远程连接的电压微调,允许用户控制发电机的输出。
提供一个模拟输入，允许连接到功率因数控制器或具有兼容输出的其他外部设备。
AVR拥有用于droop CT连接的设备，允许与其他类似装备的发电机并行运行。
技术参数检测输入电压跳线可选100-130Vac1相或190-264Vac1相频率50-60Hz输入功率电压100-264V ac1相频率50-60Hz通用电压输入电压为交流200V时，输出最大可达到直流82v。
电流连续输出为4A(见备注1).允许7.5A瞬间电流10秒.励磁电阻最小值为15Ω(电源电压低于175V时为最小10Ω)规格±1.0%(见备注2)热漂移AVR环境温度改变1℃，漂移值为0.03%(见备注3)经典系统响应AVR响应20ms90%励磁电流80ms97%输出电压300ms调节精度电压可调整范围≥±10%外接电阻1kΩ/1W(见备注4）增加阻值电压下降。
SX440中文
SX440发电机自动电压调节说明书1、说明SX440自动电压调节器(AVR)是一种密封电子装置，通过控制低功率的励磁机磁场调节励磁机电枢的整流输出功率，从而达到控制主机磁场电流，稳定无刷发电机的输出电压，具有低频与无输入信号保护功能。
并附有并机补偿功能，符合客户扩增容量需求。
2、规格输入电源190V－265VAC50/60Hz采样电源190V－265VAC50/60Hz励磁输出电压：最大95VDC电流：持续工作4A，最大6A（10秒）电压调整率≤0.5%发电机磁场电阻最小15欧姆外接电位器1KΩ1/2W电位器时±8%电压建立(初期)当剩磁电压大于5V/25Hz时会自动建立电压低频保护内置发动机转数下降时输出电压随之下降的频率保护电路(图4)使用温度-40℃－60℃尺寸137mmL×135mmW×44mmH具有缓慢电压建立3、使用时注意事项(配置参考图1)调节器的安装、连接、检查工作必须由专业人员进行，将调节器安装于发电机内防潮、防腐蚀且他人不易碰触的位置。
在一般正常运行情况下，调节器表面温度会超过60℃，运行时请勿碰触调节器，调节器的散热器上已张贴警告标志。
4、调整(1)低频调整(U/F)。
在50HZ使用时，将“短接线”插入C与50(出厂设置)，在60HZ使用时将“短接线”插入C和60之间。
U/F电位器为设定低频保护的频率动作值，其设定步骤为：a.启动发动机，使发电机建立电压。
b.调整发动机转速到所需要的低频保护值。
c.缓慢调整U/F旋转钮使AVR上红色指示灯亮即可(出厂设定50HZ时47HZ，60HZ时57HZ)。
其保护动作如图4(当红色LED指示灯亮起时，表示频率不足在此状况输出电压会因低频保护电路动作而下降，以防止过大的励磁电流损坏磁场定子线圈)。
(2)电压调整(VOLT)。
调整“电压电位器”至额定值(顺时针增加)。
当使用外部电压调整时(请参考图1)请于“1”，“2”间跨接电位器VR，1KΩ1/2W，如果没有外接VR时“1”、“2”必须短接。
发电机自动电压调节器说明书AVR
发电机自动电压调节器说明书1．说明AS440电压调节器（AVR ）是一种密封电子装置，通过控制低功率的励磁机磁场 , 调节励磁机电枢的整流输出功率 ,从而达到控制主机磁场电流， 稳定无 刷发电机之输出电压要求, 它还提供延时的过励保护 ,在励磁电压过高的情况下对发电机灭磁 .。
并附有并联补偿功能，符合客户扩增容量需求。
2． 规格100V 〜264VAC 50/60HZ100V 〜130VAC 50/60HZ190V 〜264VAC 50/60HZ4A 82VDC < 0.5%. 最小 15 欧姆 . Q 1/2W 电位器时土 8%. 当剩磁电压大于5V25HZ 时会自动建立电压 内置发动机转数下降时输出电压随之下降的保护电路 （ 参考图 3） 使用温度 —40 C 〜60 C.3．使用时注意事项（1） 安装时注意事项： （配置参考图 1） 安装、连接、检查的作业由有专业知识人员实施 . 将调节器安装于发电机内防潮、 腐蚀且防止他人不易碰触的地方。
在一般运转状况下，调节器表面温度会超过 60C, 运转时，请勿碰触调节器散热板已张贴警告标志。
4．调整⑴低频调整（U/F ）。
在50Hz 使用时，将"跨线"插入C, 50之间（出厂设置），在60Hz 使用将“跨 线”插入C ，60之间。
U/F 电位器为设定低频保护之频率动作值， 其设定步骤：使引擎启动且电压建立，调整引擎转至所需之低频值。
缓慢调整 U/F 旋钮使AVR 上红色指示灯亮即可（出厂设定50Hz 时47Hz,60Hz 时57Hz ）。
其保护动作如图3（当红色（LED ）指示灯亮起时，表示频率不足在此状况输出电压会因低频保护电路动作而下降，防止过大的激磁电流损坏磁场定子线圈）。
（2）电压调整（VOLT 。
调整 “电压电位器” 至额定值（顺时针增加 ）。
当使用外部电压调整时 （请参考 图 4）于“ 1”，“ 2”间跨接VR,1K 1/2W.无外接VR 时“1”，“ 2”必须短接。
SX440电压调整器AVR使用说明
这是一款并联机组用半波相控电压调整器，主要特点：电压调整率优于1％，可外接电位器对输出电压微调，具低频保护（随着频率的降低励磁电流也降低）并有LED指示频率过低状态，简单的外接电流互感器即可自动调整功率因素，对不同的功率等级发电机有不同的稳定选择和50／60HZ选择等。
最大特点：既可简单的外接电流互感器进行功率因素调整（小范围内），还可以连接并联机组专用功率因素控制器LSM206，实现大范围的自动调整，极大的改善了电损，间接降低了油耗技术规格：输入：电压160～265V 频率50～60HZ励磁输出：DC 90V/6A/10S 短暂10秒8A DC阻抗最小15Ω负载电压调整率：优于1%热稳定性：电压变化0。
04％／℃（在开机的十分钟后）响应时间：20ms外部电压调整范围：±8%（当外部调整端接1KΩ／2W电位器时）误差输入电流: 0--0.3A低频率保护：50HZ发电机频率46.5HZ自动保护建立电压：5V/25HZ辅助模拟输入：电压最大＋／-5V灵敏度发电机电压变化5％／1V（通过TRIM可调）外部电压调整用电位器（可选）1KΩ、1Watt电位器时为±10%90度相位差的互感器输入：电流最大0。
33A灵敏度在功率因素为0时，发电机电压变化5％／0。
07A（通过DROOP可调）工作环境：震动20-100HZ500mm／Sec。
温度-40℃～65℃湿度95％（在0～70℃）保存温度-55℃～80℃安装尺寸:130mm*116mm*40mm频率补偿：内置发动机转数下降时输出电压随之下降的频率保护电路特性调整钮VOLT：调整电压STAB：调整稳定度UFRO：调整低频保护转折点DROOP：设定压降至5% (PF=0)TRIM：最佳化电压修正灵敏度安装使用:步骤 1 - SX440的安装1. 根据下面的数据在合适的部位开孔，建议用防滑自锁螺丝进行安装。
四个安装孔位的圆心距离为：115mm×130mm，安装孔位直径为5.5mm2. 按照以下接线方式一对一的连接即可K1、K2：为磁场开关，不使用时须短路跨接。
SX440 斯坦福发电机AVR说明书
斯坦福发电机AVR产品名称：SX440型号：SX440技术参数:电压建立：当剩磁大于4V25Hz时自动建压输入电源：AC 190~260V 50/60Hz输出：电压 90V DC最大(当输入AC 207V时)电流 4A(连续) 6A10S(瞬间)频率补偿：内置发动机转数下降时输出电压随之下降的频率保护电路调整率：优于1%SX440 功能特点：在SX460的基础上增加了并联所需的DR00P调节和外部TRIM调节（外接功率因素控制器LSM206），是目前使用最多最实用的并联型AVR。
AVR是自动电压调节器是现代发电机不可少的核心部件.发电机主定子通过SX440为励磁机磁场提供电力,AVR是调节励磁电流的控制装置。
AVR向来自主定子绕组的电压信号作出反馈,通过控制低功率的励磁机磁场，调节励磁机电枢的整流输出功率,从而达到控制主机磁场电流的要求。
SX440AVR通过感应两相平均电压，确保了电压调整率。
除此之外，它还监测发动机的转速，如低于预选转速（Hz）设定，则相应降低输出电压，以防止发动机低速时的过励，缓减加载时的冲击，以减轻发动机的负担.这是一款并联机组用半波相控电压调整器，主要特点：电压调整率优于1％，可外接电位器对输出电压微调，具低频保护（随着频率的降低励磁电流也降低）并有LED 指示频率过低状态，简单的外接电流互感器即可自动调整功率因素，对不同的功率等级发电机有不同的稳定选择和50／60HZ选择等。
最大特点：既可简单的外接电流互感器进行功率因素调整（小范围内），还可以连接并联机组专用功率因素控制器LSM206，实现大范围的自动调整，极大的改善了电损，间接降低了油耗。
一 AVR设定1.频率选择端子(Ｆrequency selection terminals)50ＨＺ运行连接50-C 60ＨＺ运行连接60-C2.稳定性选择端子(Ｓtability selection terminals)90KW以下连接A-Ｃ 90KW-550KW 连接B-Ｃ 550KW以上连接B-A3.励磁中断连接(Ｅxcitation lnterruption Link)励磁断路器闭合。
柴油发电机组中文说明书
For personal use only in study and research; not for commercial use斯坦福柴油发电机组使用说明书上海斯坦福动力设备有限公司1.概述斯坦福柴油发电机组采用柴油动力，为四冲程、水冷、直列、直喷、带涡轮增压柴油机，或者根据客户制定要求进行匹配，可靠性好、寿命长、具有良好的配套适应性，可满足客户的不同要求。
适用于工矿、工地、通讯、小型城镇作为流动或固定电源,供给动力、照明、通讯或其它应急备用电源。
本说明书主要对斯坦福系列柴油发电机组的工作条件、机组结构、性能指标及安装使用和维护作简要说明。
2.工作条件1.机组在下列标准状况下应能输出标定功率，标定功率分常用功率和备用功率两种。
常用功率是指机组能以此功率连续工作12h，其中包括过载10%工作1h；备用功率是指机组能以此功率连续工作1h，无超负载能力，备用功率在机组型号后用S表示。
大气压力100kPa。
环境温度为298K（25℃）。
空气相对湿度为30％。
若超过上述规定的条件连续运行时，（在按使用说明书规定进行保养的条件下）其输出功率按柴油机规定功率的90％修正后折算的电功率，但此电功率最大不得超过发电机的额定功率，当使用条件与该规定不符时，其输出功率应为按GB/T 6072.1-2000规定的方法修正柴油机功率后折算的电功率，但此电功率最大不得超过发电机的额定功率。
2.机组在下列条件下应能输出规定功率（允许功率修正）并可靠地工作。
a) 海拔高度不超过4000m。
b) 环境温度为（5～40）℃。
c) 空气相对湿度为90％(25℃时)。
当试验海拔高度超过1000m(但不超过4000m时)，环境温度的上限值按海拔高度每增加100m降低0.5℃修正。
3.机组只适宜在室内或具有避免日晒雨淋的场合使用（有防雨性能的箱式机组除外），机组不适宜在空气中带有导电尘埃、腐蚀性气体的场合使用。
3．警告与安全3.1 警告1.机组安装和移动时，须小心轻放，不得碰撞或翻转。
斯坦福SX440AVR说明书
斯坦福SX440AVR说明书技术参数: 电压建立：当剩磁大于4V25Hz时自动建压输入电源：AC 190~260V 50/60Hz输出：电压 90V DC最大(当输入AC 207V时) 电流 4A(连续) 6A10S(瞬间) 频率补偿：内置发动机转数下降时输出电压随之下降的频率保护电路调整率：优于1%安装使用:步骤 1 - SX440的安装1. 根据下面的数据在合适的部位开孔，建议用防滑自锁螺丝进行安装。
四个安装孔位的圆心距离为：115mm×130mm，安装孔位直径为5.5mm2. 按照以下接线方式一对一的连接即可K1、K2：为磁场开关，不使用时须短路跨接。
P2、P3：为磁场电源输入端子。
3、2：为检测电源输入端子。
1、2：为外接VR，不使用时须短路跨接。
X、XX：X磁场 + 端、XX磁场–端。
S1、S2：DROOP CT 输入端。
A1、A2：VAR / PF 控制输入(V / TRIM)。
A、B、C：90KW 以下 A、C 跨接，90KW ~ 550KW B、C 跨接，550KW 以上 A、B 跨接。
J1 ~ J8：选择跨接线2-3、4-5、6-7。
步骤 2 - SX440的调试1. 设定低频保护：检查频率选择跳线是否在合适位置。
启动发电机，调节发电机转速到理想之低频保护动作值。
缓慢调节U/F微调，使保护用LED红灯亮起即可。
（出厂默认正常50HZ时40HZ保护，60HZ时55HZ保护）2. 电压调节可由SX440上的VOLT微调调节，亦可用外接VR（1～2间）来调节。
如需外置调节请在SX440“1”与“2”接脚上跨接一电阻1KW，若无须外接时，“1”与“2”须短路跨接。
在外置调节时请在发电机未启动前先将SX440的VOLT微调逆时针调到底，然后外置的VR调至中间位置。
启动发电机，先将转速调节正常。
缓慢调节SX440上的VOLT或者外接的VR，使电压至理想电压值。
如果电压这个时候不稳定，请缓慢调节SX440上的STAB，使电压逐步稳定。
SX440电压调整器AVR使用说明
SX440电压调整器AVR使用说明一、安装1.在安装前，请确保电源已断开，并确保发电机处于安全状态。
2.将SX440电压调整器与发电机主回路连接，确保正负极连接正确。
3.将SX440电压调整器固定在合适的位置，确保防尘防水。
二、连接1.将SX440电压调整器的主输出端与发电机输出端连接。
2.将SX440电压调整器的辅助供电端与发电机的辅助供电端连接。
3.将SX440电压调整器的电位器端连接到电位器，以实现电压控制。
三、调试1.打开发电机控制器的电源，并将电源开关置于关闭状态。
2.按下SX440电压调整器上的“测试”按钮，启动自检程序，确保SX440电压调整器正常工作。
3.调整SX440电压调整器上的电位器，使其与所需的输出电压相匹配。
4.打开发电机控制器的电源，并将电源开关置于打开状态，此时SX440电压调整器正常工作。
四、维护1.定期检查SX440电压调整器的工作状态，确保其正常工作。
2.定期清洁SX440电压调整器，确保其表面无尘、无积土等污物。
3.定期检查SX440电压调整器的连接线路，确保其稳固可靠。
五、常见问题解答1.SX440电压调整器如何连接到发电机？答：将SX440电压调整器的主输出端与发电机输出端连接即可。
2.如何调整SX440电压调整器的输出电压？答：通过调整SX440电压调整器上的电位器可以实现输出电压的调整。
3.SX440电压调整器出现故障时应该怎么办？4.SX440电压调整器的最大输出电压是多少？答：SX440电压调整器的最大输出电压一般为220V。
六、注意事项1.安装、调试和维护SX440电压调整器时，请务必断开电源以确保安全。
2.在操作SX440电压调整器时，请仔细阅读并遵守使用说明。
4.在连接线路时，请确保连接正确并稳固可靠。
SX440电压调整器AVR使用说明
SX440电压调整器AVR使用说明
一、概述
二、安装与接线
1.准备工作：确保电源和发电机断开电源，以免发生电击或其他危险。
2.安装SX440电压调整器时，应将其固定在安装座上，确保牢固可靠。
3.接线时，应先安装主电源线和电源接头，再连接调节器与发电机的
输出。
三、调节参数设置
1.调节SX440电压调整器的参数前，请确保您已经了解发电机的电压
需求和工作环境。
2.使用调节器的按钮和显示屏，您可以设置并调整多种参数，包括电
压调节范围、上升和下降速率、过载保护等。
3.设置参数时，请仔细阅读设备说明书，并参考厂家提供的参数设置
建议。
四、注意事项
1.在使用SX440电压调整器之前，请务必熟悉并遵守设备的使用说明
和安全须知。
2.在操作过程中，应保持仪器和工作环境的清洁和干燥，以免损坏设
备或影响精度。
4.SX440电压调整器只能由专业人士进行安装、维修和维护，任何未经授权的操作可能导致设备损坏或人身伤害。
5.在调节器运行过程中，请注意观察设备的状态和指示灯的显示，及时处理问题。
6.在断开电源或停机时，请先关闭电压调整器，再切断电源，以免电击或其他危险。
五、常见问题与解决
1.问题：SX440电压调整器无法调节电压。
2.问题：SX440电压调整器发出异常噪音。
3.问题：SX440电压调整器显示屏无法正常显示。
4.问题：SX440电压调整器参数设置无效。
SX440发电机自动电压调节器中文使用说明书
SX440发电机自动电压调节器中文使用说明书尊敬的用户：欢迎您使用 SX440 发电机自动电压调节器。
本调节器旨在为您的发电机提供稳定、可靠的电压输出，确保电力供应的质量和稳定性。
在使用本调节器之前，请您仔细阅读本使用说明书，以便正确操作和维护设备，充分发挥其性能和延长使用寿命。
一、产品概述SX440 发电机自动电压调节器是一款先进的电子设备，专门设计用于调节发电机的输出电压。
它采用了最新的控制技术和高精度的传感器，能够快速、准确地响应负载变化，保持输出电压在设定范围内。
二、技术参数1、输入电压：＿____2、输出电压：＿____3、调节精度：±＿____%4、响应时间：＿____毫秒5、工作温度：＿____℃至+＿____℃6、防护等级：＿____三、安装步骤1、在安装之前，请确保发电机处于停机状态，并断开电源。
2、打开调节器的包装盒，检查调节器及其附件是否齐全、完好。
3、将调节器安装在发电机控制箱内的合适位置，使用螺丝固定。
4、按照调节器上的接线图，将输入、输出和控制线路正确连接。
注意接线的牢固性和正确性，避免短路或接触不良。
5、安装完成后，仔细检查一遍接线，确保无误。
四、操作方法1、开机前，将调节器的电源开关置于“ON”位置。
2、调节电压设定旋钮，将输出电压设定为您所需的值。
3、启动发电机，调节器将自动检测发电机的输出电压，并进行调节。
4、在发电机运行过程中，您可以通过观察调节器上的指示灯和电压表，了解调节器的工作状态和输出电压情况。
五、功能特点1、自动调节功能：SX440 能够实时监测发电机的输出电压，并根据负载变化自动调整励磁电流，保持电压稳定。
2、过压保护功能：当发电机输出电压超过设定的上限值时，调节器会自动切断励磁电流，保护负载设备不受过高电压的损害。
3、欠压保护功能：若发电机输出电压低于设定的下限值，调节器会增加励磁电流，提高输出电压，以确保负载正常运行。
4、短路保护功能：在发生短路故障时，调节器能够迅速切断励磁电流，保护发电机和调节器本身不受损坏。
SX440发电机自动电压调节器中文使用说明书
SX440發電机自動電壓調節器使用手冊1. 技術參數检测与检测与电源电源电源输入输入 电压 190 ~ 264 V AC 单相二线 电压建立 在A VR 输入端子需剩磁电压5 V AC 以上频率 50/60 Hz 以跨接铜片设定 消耗功率 最大12 Watt输 出 电压 207 V AC 输入时 最大90 VDC 低频保护 出厂预设：95% Hz 电流 连续4A ，非连续为10秒内10A 斜率：下降至30 Hz 时为170%电阻 最小15 Ohm电压修正 最大输入：±5 VDC调压精度 < ±1% (发动机转速变动在4%内) (模拟输入) 灵敏度：每1VDC 可调节5%发电机电压 温差稳定度 每℃变化，电压漂移0.05%输入电阻：1K Ohm 外部电压调节 用1K Ohms 1 Watt 电位器时为±8% 电流补偿 负 载：10 Ohm电压缓慢建立时间 2秒尺 寸 150mm L * 135mm W * 40mm H DROOP 无功调差 最高灵敏度0.07A 对应5%压降(PF=0时) 重 量 418公克 ± 2%最大输入0.33A2. 接線2.1 K1、K2：为磁场开关，不使用时须短路跨接. 2.2 P2、P3：为磁场电源输入端子. 2.3 3、2：为检测电源输入端子.2.4 1、2：为外接VR ，不使用时须短路跨接. 2.5 、 ： 磁场+端、 磁场−端. 2.6 S1、S2：DROOP CT 输入端.2.7 A1、A2：V AR / PF 控制输入(V / TRIM). 2.8 AB 、C ：90KW 以下 A 、C 跨接，90KW~ 550KW B 、C 跨接，550KW 以上 A 、B 跨接. 2.9 J1 ~ J8：选择跨接线2-3、4-5、6-7. (如图二) 2.10 建议使用一较高遮断容量之保险加装于励磁场电源，熔丝容量须依实际满载励磁场电流的120%.注意!! 熔丝熔丝加装位置须能有效切断励磁加装位置须能有效切断励磁场回路场回路，，且勿与励磁场串接.3. 調節3.1 低频调节 (U/F).3.1.1 在50Hz 使用时，将 “跨接线” 插于COM 与50Hz 之间，在60Hz 使用时，将“跨接线” 插于COM 与60Hz 之间. 3.1.2 U/F 旋钮为设定低频保护之频率拐点值，其设定步骤为：(1) 使发动机启动，且电压建立.(2) 调节发动机转速至所须之低频值.(3) 缓慢调节U/F 旋钮，使低频保护红色LED 灯亮起即可 (出厂预设50Hz 时45Hz 、60Hz 时55Hz)。
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斯坦福发电机AVR
产品名称：SX440
型号：SX440
技术参数:
电压建立：当剩磁大于4V25Hz时自动建压
输入电源：AC 190~260V 50/60Hz
输出：电压 90V DC最大(当输入AC 207V时)
电流 4A(连续) 6A10S(瞬间)
频率补偿：内置发动机转数下降时输出电压随之下降的频率保护电路
调整率：优于1%
SX440 功能特点：
在SX460的基础上增加了并联所需的DR00P调节和外部TRIM调节（外接功率因素控制器LSM206），是目前使用最多最实用的并联型AVR。
AVR是自动电压调节器是现代发电机不可少的核心部件.发电机主定子通过SX440为励磁机磁场提供电力,AVR是调节励磁电流的控制装置。
AVR向来自主定子绕组的电压信号作出反馈,通过控制低功率的励磁机磁场，调节励磁机电枢的整流输出功率,从而达到控制主机磁场电流的要求。
SX440AVR通过感应两相平均电压，确保了电压调整率。
除此之外，它还监测发动机的转速，如低于预选转速（Hz）设定，则相应降低输出电压，以防止发动机低速时的过励，缓减加载时的冲击，以减轻发动机的负担.
这是一款并联机组用半波相控电压调整器，主要特点：电压调整率优于1％，可外接电位器对输出电压微调，具低频保护（随着频率的降低励磁电流也降低）并有LED 指示频率过低状态，简单的外接电流互感器即可自动调整功率因素，对不同的功率等级发电机有不同的稳定选择和50／60HZ选择等。
最大特点：既可简单的外接电流互感器进行功率因素调整（小范围内），还可以连接并联机组专用功率因素控制器LSM206，实现大范围的自动调整，极大的改善了电损，间接降低了油耗。
一 AVR设定
1.频率选择端子(Ｆrequency selection terminals)
50ＨＺ运行连接50-C 60ＨＺ运行连接60-C
2.稳定性选择端子(Ｓtability selection terminals)
90KW以下连接A-Ｃ 90KW-550KW 连接B-Ｃ 550KW以上连接B-A
3.励磁中断连接(Ｅxcitation lnterruption Link)
励磁断路器闭合。
如不安装此可选件，在辅助接线合内连接Ｋ１-Ｋ２（AVR出厂时
K1-K2用一导线连接））
4.感应选择（Sensing selection termunals）
连接2-3 连接4-5 连接6-7
二 AVR连接
1. P2 P3发电机励磁电力输入（220V）
2. XX X 为AVR励磁电力输出（X为正 XX为负）
3. 2 3 为AVR反馈电压输入（220V） 1 2为外接电压微调（无外接微调时连接1 2）
4. S1 S2 为并机电流感应输入
三AVR调整（出厂时已调整，用户必要时只需作如下调整）
1 电压调整如输出电压不符，顺时针旋转电压调节电位器，输出电压升高；反之则反。
2 频率设定将发动机转速调至47HZ，顺时针旋转UFRO电位器，使指示二极管发光，调回发动机转速即可。