Generator Automatic Voltage Regulator Operation Manual
Contents
1. Set point 95 Hz UFRO Slope 170 down to 30 Hz Soft Start Ramp Time 2 sec Dimensions 135mm L 100mm W 49mm H Weight 243g 2 2 When operations please do not touch the warning signal of the heat sink 3 3 System Startup 1 Turn Ensure all the wire of the regulator are correctly connected and the proper fuse 5A250V is installed Turn voltage potentiometer full anticlockwise lowest voltage level If used turn external voltage potentiometer to the middle position stability potentiometer full clockwise highest stability level Connect a 110VDC meter across the field with proper polarity Connect a 300VAC meter across line to neutral of generator Start and run the generator at no load and rated speed The generator output voltage should build up to a minimum level if the voltage does not build up It may cause by low residual voltage of generator Refer to field flashing section in generator manual Slowly adjust voltage potentiometer until the generator voltage reach the proper value 9 Turn the stability potentiometer clockwise until instability is shown and then turn it anticlockwise slightly still both meter mention in 5 and 6 shown stable 10 Interrupt regulator power for a short time approximately 1 to 2 second If the voltage still stable the adjustment is now completed Otherwise increase the stability slightly repeat procedure 102. voltage is less than the specified value of 5 Vac shut down the Prime mover and proceed with the following steps With the Prime mover at rest and the regulator s field output wires disconnected apply a DC source NOT grounded of not more than 3 12 Vdc with Positive to F and Negative to F in series with a current limiting resistor of 3 5 ohms 20 watt The set battery is a suitable source Allow approximately 3 seconds before removing the DC source With the voltage regulator disconnected wires 3 and 4 start the prime mover and measure the residual voltage available at the auxiliary winding If this voltage is greater than 5 Vac reconnect voltage regulator and voltage build up should be successful If less than 5 Vac is measured repeat field flashing procedure If repeating steps a and b does not result in generator voltage build up and residual is greater than 5 Vac replace voltage regulator WARNING This Automatic Voltage Regulator is not equipped with loss Sensing Protection function Over Excitation Protection An additional Over Voltage Protection device for load may be required to avoid possible damage to the equipment or severe personal injury or death GENERATOR OUTPUT VOLTAGE Yo OF MONINAL 135 0 FREQUENCY HZ Frequency Compensation Curves Figure 2 Outline Drawing Figure 1 GENERATOR OUTPUT VOLTAGE Yo OF MONINAL SOFT START V Sec So
3. SX460 Generator Automatic Voltage Regulator Operation Manual Self Excited Automatic Voltage Regulator Compatible with Newage SX460 Use for reference purpose only and not a genuine Newage product 1 INTRODUCTION Sensing Input Voltage 95 132 VAC or 190 264 VAC 1 phase jumper selectable Frequency 50 60 Hz selectable Output Voltage Max 90 VDC 207 VAC Current Continuous 4A Intermittent 10A for 10 sec Resistance Min 15 ohm Voltage Regulation lt 1 5 with 4 engine governing Voltage Build up Residual voltage at AVR terminal gt 5 VAC Thermal Drift 0 05 per C change in AVR ambient 2 WIRING Refer to Fig 4 1 2 Connect F1 F2 to DC output port Connect the sensing port at 7 8 the factory setup is 220V if 110V is required please join 3 4 3 External voltage regulator is as Figure 4 4 Connect a jumper from COM to the 50Hz terminal for 50Hz operation Note please install 5A 250V fuse at power input port as Figure 4 3 NOTICE OF USE 3 1 See figure 1 1 Place the EA460 The connection and examination procedures must be executed by the profession engineers inside of the generator especially the moisture proof and anticorrosive space 3 2 Startup procedure 1 The surface temperature pf the EA460 will be over 60 C External Volts Adjustment 7 with 1K ohm 1 watt trimmer Unit Power Dissipation Max 10 watt Under Frequency Protection
4. ft Start Curve Figure 3 Z PAS N Wiring and adjustment Figure 4 1K Ohms IN es ensing volts selection 7 Close 110v Open 220v o Working Frequesncy Selection HO gt Hz setting Oo Stab Adj Note 1 When there is no connection to VR 1 and 2 must be joined 2 When LED lamp is light on it means the frequency isn t enough The output voltage will decrease to prevent over load exciting current to damage the exciter field winding 6 TROUBLE SHOOTING Voltage does not Residual voltage below 5VAC Flash generator field with proper method build up Incorrect wiring Check wiring diagram for proper connection Power sensing or field wires not Connect the wires properly connected Generator not up to speed Increase generator speed Out voltage low Poor adjustment is made Read start procedure carefully and adjust again Frequency roll off Increase generator speed Incorrect voltage selection Read user s manual to select correct voltage Out voltage high Poor adjustment is made Read start procedure carefully and adjust again Incorrect voltage selection Read user s manual to select correct voltage Out voltage instable Poor adjustment is made Read start procedure carefully and adjust again Field voltage requirement lower Inquire our distributor to solve the rang of regulator
5. until stability is reached 4 ADJUSTMENTS 4 1 Frequency roll off adjustment i As using 50Hz please connect a jumper between Com and 50Hz As 60Hz between Com and 60 Hz fi To reset the frequency roll off proceed as follow 1 Startup engine and build voltage 2 Adjust the engine speedy down to low frequency 3 Adjust the front panel U F control until the output voltage low about 5V than nominal voltage For 50Hz applications the frequency roll off is factory preset to 45Hz for 60Hz operation the frequency is 55Hz 4 2 Voltage Adjustment 1 Adjust the front panel VOLT to vary the generator nominal voltage 2 If used a 1000 15000 1 2 watt potential meter may be connected to terminals VR and VR refer to Figure 4 4 3 Stability Adjustment 1 Adjust the front panel STAB control the system stable Rotation of the front panel STAB control in the counter clockwise CCW direction will speed response time If rotated too for CCW the generator voltage my oscillate hunt 2 Rotated the front panel STAB control CCW until the system start oscillating and then rotate cw just past the point where oscillation occurred 5 FIELD FLASHING When the regulator is operated with the generator for the first time the polarity of residual magnetism may be reversed or too small to achieve the necessary build up voltage for the regulator If reversing the field connections does not induce build up and the residual
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